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MRS UMN 20231116 version

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Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: Yang, Tong <yangtong2@huawei.com>
Co-committed-by: Yang, Tong <yangtong2@huawei.com>
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Yang, Tong 2023-11-24 09:50:11 +00:00 committed by zuul
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<h1 class="topictitle1">ALM-12028 Number of Processes in the D State and Z State on a Host Exceeds the Threshold</h1> <h1 class="topictitle1">ALM-12028 Number of Processes in the D State and Z State on a Host Exceeds the Threshold</h1>
<div id="body14709652"><div class="section" id="ALM-12028__section23718688"><h4 class="sectiontitle">Description</h4><p id="ALM-12028__p50631172">The system checks the number of processes in the D stateand Z state of user <strong id="ALM-12028__b16253141134213">omm</strong> on the host every 30 seconds and compares the actual number with the threshold. The number of processes in the D state and Z state on the host has a default threshold range. This alarm is generated when the number of processes exceeds the threshold.</p> <div id="body14709652"><div class="section" id="ALM-12028__section23718688"><h4 class="sectiontitle">Description</h4><p id="ALM-12028__p50631172">The system checks the number of processes in the D stateand Z state of user <strong id="ALM-12028__b16253141134213">omm</strong> on the host every 30 seconds and compares the actual number with the threshold. The number of processes in the D state and Z state on the host has a default threshold range. This alarm is generated when the number of processes exceeds the threshold.</p>
<p id="ALM-12028__p53027366">This alarm is cleared when the <strong id="ALM-12028__b1896274320598">Trigger Count</strong> is <strong id="ALM-12028__b15669123210464">1</strong> and the total number of processes in the D state and Z state of user <strong id="ALM-12028__b19867204318485">omm</strong> on the host does not exceed the threshold. This alarm is cleared when the <strong id="ALM-12028__b134171188010">Trigger Count</strong> is greater than <strong id="ALM-12028__b466017588499">1</strong> and the total number of processes in the D state and Z state of user <strong id="ALM-12028__b1986717812518">omm</strong> on the host is less than or equal to 90% of the threshold.</p> <p id="ALM-12028__p53027366">This alarm is cleared when the <strong id="ALM-12028__b1896274320598">Trigger Count</strong> is <strong id="ALM-12028__b15669123210464">1</strong> and the total number of processes in the D state and Z state of user <strong id="ALM-12028__b19867204318485">omm</strong> on the host does not exceed the threshold. This alarm is cleared when the <strong id="ALM-12028__b134171188010">Trigger Count</strong> is greater than <strong id="ALM-12028__b466017588499">1</strong> and the total number of processes in the D state and Z state of user <strong id="ALM-12028__b1986717812518">omm</strong> on the host is less than or equal to 90% of the threshold.</p>
<div class="note" id="ALM-12028__note13991618131016"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-12028__p84028186101">The function of checking the number of processes in the Z state on the host applies to MRS 3.2.0 or later.</p> <div class="note" id="ALM-12028__note13991618131016"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-12028__p84028186101">The function of checking the number of processes in the Z state on the host applies to MRS 3.2.0<span id="ALM-12028__ph174355293719">-LTS.2</span> or later.</p>
</div></div> </div></div>
</div> </div>
<div class="section" id="ALM-12028__section12141602"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-12028__section12141602"><h4 class="sectiontitle">Attribute</h4>

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<a name="ALM-12040"></a><a name="ALM-12040"></a> <a name="ALM-12040"></a><a name="ALM-12040"></a>
<h1 class="topictitle1">ALM-12040 Insufficient System Entropy</h1> <h1 class="topictitle1">ALM-12040 Insufficient System Entropy</h1>
<div id="body50087568"><div class="section" id="ALM-12040__section49858936"><h4 class="sectiontitle">Description</h4><p id="ALM-12040__p2074190332">MRS 3.2.0 or later:</p> <div id="body50087568"><div class="section" id="ALM-12040__section49858936"><h4 class="sectiontitle">Description</h4><p id="ALM-12040__p2074190332">MRS 3.2.0<span id="ALM-12040__ph174355293719">-LTS.2</span> or later:</p>
<p id="ALM-12040__p6122155912253">The system checks whether the rng-tools or haveged tool has been enabled and correctly configured every 5 minutes. If neither tool is configured, this alarm is generated. If either is configured, the system continues to check the entropy. If the entropy is less than 100 for five consecutive times, this alarm is generated.</p> <p id="ALM-12040__p6122155912253">The system checks whether the rng-tools or haveged tool has been enabled and correctly configured every 5 minutes. If neither tool is configured, this alarm is generated. If either is configured, the system continues to check the entropy. If the entropy is less than 100 for five consecutive times, this alarm is generated.</p>
<p id="ALM-12040__p512217596259">This alarm is cleared when rng-tools or haveged has been installed and enabled on the target node and the entropy of the OS is greater than or equal to 100 in at least one of five entropy checks.</p> <p id="ALM-12040__p512217596259">This alarm is cleared when rng-tools or haveged has been installed and enabled on the target node and the entropy of the OS is greater than or equal to 100 in at least one of five entropy checks.</p>
<p id="ALM-12040__p117941134143317">MRS 3.1.2 or earlier:</p> <p id="ALM-12040__p117941134143317">MRS 3.1.2<span id="ALM-12040__ph3558162354411">-LTS.6</span> or earlier:</p>
<p id="ALM-12040__p144638408307">The system checks the entropy for five consecutive times at 00:00 every day. Specifically, the system checks whether rng-tools or haveged has been enabled and correctly configured. If neither is configured, the system continues to check the entropy. If the entropy is less than 100 for five consecutive times, this alarm is reported.</p> <p id="ALM-12040__p144638408307">The system checks the entropy for five consecutive times at 00:00 every day. Specifically, the system checks whether rng-tools or haveged has been enabled and correctly configured. If neither is configured, the system continues to check the entropy. If the entropy is less than 100 for five consecutive times, this alarm is reported.</p>
<p id="ALM-12040__p1146314023010">This alarm is cleared when the system detects that the true random number mode has been configured, the random number parameters have been configured in the pseudo-random number mode, or neither mode is configured but the entropy of the OS is greater than or equal to 100 in at least one of five entropy checks.</p> <p id="ALM-12040__p1146314023010">This alarm is cleared when the system detects that the true random number mode has been configured, the random number parameters have been configured in the pseudo-random number mode, or neither mode is configured but the entropy of the OS is greater than or equal to 100 in at least one of five entropy checks.</p>
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<h1 class="topictitle1">ALM-12054 Invalid Certificate File</h1> <h1 class="topictitle1">ALM-12054 Invalid Certificate File</h1>
<div id="body4761603"><div class="section" id="ALM-12054__section14878122"><h4 class="sectiontitle">Description</h4><p id="ALM-12054__p50145535">The system checks whether the certificate file is invalid (has expired or is not valid yet) on 23:00 every day. This alarm is generated when the certificate file is invalid.</p> <div id="body4761603"><div class="section" id="ALM-12054__section14878122"><h4 class="sectiontitle">Description</h4><p id="ALM-12054__p50145535">The system checks whether the certificate file is invalid (has expired or is not valid yet) on 23:00 every day. This alarm is generated when the certificate file is invalid.</p>
<p id="ALM-12054__p48656638">This alarm is cleared when a valid certificate is imported and the alarm detection mechanism is triggered on the next hour.</p> <p id="ALM-12054__p48656638">This alarm is cleared when a valid certificate is imported and the alarm detection mechanism is triggered on the next hour.</p>
<div class="note" id="ALM-12054__note1958711114167"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-12054__p175881411121613">For MRS 3.2.0 or later, the certificate file is checked at the beginning of each hour.</p> <div class="note" id="ALM-12054__note1958711114167"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-12054__p175881411121613">For MRS 3.2.0<span id="ALM-12054__ph174355293719">-LTS.2</span> or later, the certificate file is checked at the beginning of each hour.</p>
<p id="ALM-12054__p186151039192511">For versions earlier than MRS 3.2.0, the certificate file is checked on 23:00 every day.</p> <p id="ALM-12054__p186151039192511">For versions earlier than MRS 3.2.0<span id="ALM-12054__ph20222111813516">-LTS.2</span>, the certificate file is checked on 23:00 every day.</p>
</div></div> </div></div>
</div> </div>
<div class="section" id="ALM-12054__section66794237"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-12054__section66794237"><h4 class="sectiontitle">Attribute</h4>
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<ul class="subitemlist" id="ALM-12054__ul6505776815237"><li id="ALM-12054__li3084159815237">If <strong id="ALM-12054__b10712888143012">CA Certificate</strong> is displayed in the additional alarm information, log in to the active OMS management node as user <strong id="ALM-12054__b2115831533012">omm</strong> and go to <a href="#ALM-12054__li2768003415237">2</a>.</li><li id="ALM-12054__li205560515237">If <strong id="ALM-12054__b18381976313012">HA root Certificate</strong> is displayed in the additional information, view <strong id="ALM-12054__b14553259973012">Location</strong> to obtain the name of the host involved in this alarm. Then, log in to the host as user <strong id="ALM-12054__b10513863303012">omm</strong> and go to <a href="#ALM-12054__li6628516015237">3</a>.</li><li id="ALM-12054__li2214172115237">If <strong id="ALM-12054__b18169878033012">HA server Certificate</strong> is displayed in the additional information, view <strong id="ALM-12054__b6062742563012">Location</strong> to obtain the name of the host involved in this alarm. Then, log in to the host as user <strong id="ALM-12054__b10652669033012">omm</strong> and go to <a href="#ALM-12054__li64457371511">4</a>.</li><li id="ALM-12054__li5926131164116">If <strong id="ALM-12054__b2672141219591">Certificate has expired</strong> is displayed in the additional information, view <strong id="ALM-12054__b105451432204">Location</strong> to obtain the name of the host for which the alarm is generated. Then, log in to the host as user <strong id="ALM-12054__b1133110114812">omm</strong> and perform <a href="#ALM-12054__li2768003415237">2</a> to <a href="#ALM-12054__li64457371511">4</a> in sequence to check whether the certificates have expired. If these certificates have not expired, check whether other certificates have been imported. If yes, import the certificate files again.</li></ul> <ul class="subitemlist" id="ALM-12054__ul6505776815237"><li id="ALM-12054__li3084159815237">If <strong id="ALM-12054__b10712888143012">CA Certificate</strong> is displayed in the additional alarm information, log in to the active OMS management node as user <strong id="ALM-12054__b2115831533012">omm</strong> and go to <a href="#ALM-12054__li2768003415237">2</a>.</li><li id="ALM-12054__li205560515237">If <strong id="ALM-12054__b18381976313012">HA root Certificate</strong> is displayed in the additional information, view <strong id="ALM-12054__b14553259973012">Location</strong> to obtain the name of the host involved in this alarm. Then, log in to the host as user <strong id="ALM-12054__b10513863303012">omm</strong> and go to <a href="#ALM-12054__li6628516015237">3</a>.</li><li id="ALM-12054__li2214172115237">If <strong id="ALM-12054__b18169878033012">HA server Certificate</strong> is displayed in the additional information, view <strong id="ALM-12054__b6062742563012">Location</strong> to obtain the name of the host involved in this alarm. Then, log in to the host as user <strong id="ALM-12054__b10652669033012">omm</strong> and go to <a href="#ALM-12054__li64457371511">4</a>.</li><li id="ALM-12054__li5926131164116">If <strong id="ALM-12054__b2672141219591">Certificate has expired</strong> is displayed in the additional information, view <strong id="ALM-12054__b105451432204">Location</strong> to obtain the name of the host for which the alarm is generated. Then, log in to the host as user <strong id="ALM-12054__b1133110114812">omm</strong> and perform <a href="#ALM-12054__li2768003415237">2</a> to <a href="#ALM-12054__li64457371511">4</a> in sequence to check whether the certificates have expired. If these certificates have not expired, check whether other certificates have been imported. If yes, import the certificate files again.</li></ul>
</p></li></ol> </p></li></ol>
<p class="tableheading" id="ALM-12054__p4864900615237"><strong id="ALM-12054__b58840153152325">Check the validity period of the certificate files in the system.</strong></p> <p class="tableheading" id="ALM-12054__p4864900615237"><strong id="ALM-12054__b58840153152325">Check the validity period of the certificate files in the system.</strong></p>
<ol start="2" id="ALM-12054__ol32858266152358"><li id="ALM-12054__li2768003415237"><a name="ALM-12054__li2768003415237"></a><a name="li2768003415237"></a><span>Check whether the current system time is in the validity period of the CA certificate. </span><p><p class="litext" id="ALM-12054__p47089478143530">Run the <strong id="ALM-12054__b02413395020">bash ${CONTROLLER_HOME}/security/cert/conf/querycertvalidity.sh</strong> command to check the effective time and due time of the CA root certificate.</p> <ol start="2" id="ALM-12054__ol32858266152358"><li id="ALM-12054__li2768003415237"><a name="ALM-12054__li2768003415237"></a><a name="li2768003415237"></a><span>Check whether the current system time is in the validity period of the CA certificate.</span><p><p class="litext" id="ALM-12054__p47089478143530">Run the <strong id="ALM-12054__b02413395020">bash ${CONTROLLER_HOME}/security/cert/conf/querycertvalidity.sh</strong> command to check the effective time and due time of the CA root certificate.</p>
<ul class="subitemlist" id="ALM-12054__ul307555915237"><li id="ALM-12054__li1316823415237">If yes, go to <a href="#ALM-12054__li993320915237">7</a>.</li><li id="ALM-12054__li5999405215237">If no, go to <a href="#ALM-12054__li99782015237">5</a>.</li></ul> <ul class="subitemlist" id="ALM-12054__ul307555915237"><li id="ALM-12054__li1316823415237">If yes, go to <a href="#ALM-12054__li993320915237">7</a>.</li><li id="ALM-12054__li5999405215237">If no, go to <a href="#ALM-12054__li99782015237">5</a>.</li></ul>
</p></li><li id="ALM-12054__li6628516015237"><a name="ALM-12054__li6628516015237"></a><a name="li6628516015237"></a><span>Check whether the current system time is in the validity period of the HA root certificate. </span><p><p class="litext" id="ALM-12054__p2749028515237">Run the <strong id="ALM-12054__b4779371815237">openssl x509 -noout -text -in ${CONTROLLER_HOME}/security/certHA/root-ca.crt</strong> command to check the effective time and due time of the HA root certificate.</p> </p></li><li id="ALM-12054__li6628516015237"><a name="ALM-12054__li6628516015237"></a><a name="li6628516015237"></a><span>Check whether the current system time is in the validity period of the HA root certificate.</span><p><p class="litext" id="ALM-12054__p2749028515237">Run the <strong id="ALM-12054__b4779371815237">openssl x509 -noout -text -in ${CONTROLLER_HOME}/security/certHA/root-ca.crt</strong> command to check the effective time and due time of the HA root certificate.</p>
<ul class="subitemlist" id="ALM-12054__ul4464772015237"><li id="ALM-12054__li1212058815237">If yes, go to <a href="#ALM-12054__li993320915237">7</a>.</li><li id="ALM-12054__li4224356015237">If no, go to <a href="#ALM-12054__li3092985115237">6</a>.</li></ul> <ul class="subitemlist" id="ALM-12054__ul4464772015237"><li id="ALM-12054__li1212058815237">If yes, go to <a href="#ALM-12054__li993320915237">7</a>.</li><li id="ALM-12054__li4224356015237">If no, go to <a href="#ALM-12054__li3092985115237">6</a>.</li></ul>
</p></li><li id="ALM-12054__li64457371511"><a name="ALM-12054__li64457371511"></a><a name="li64457371511"></a><span>Check whether the current system time is in the validity period of the HA user certificate.</span><p><p class="litext" id="ALM-12054__p2445537411">Run the <strong id="ALM-12054__b8445153713116">openssl x509 -noout -text -in ${CONTROLLER_HOME}/security/certHA/server.crt</strong> command to check the effective time and due time of the HA user certificate.</p> </p></li><li id="ALM-12054__li64457371511"><a name="ALM-12054__li64457371511"></a><a name="li64457371511"></a><span>Check whether the current system time is in the validity period of the HA user certificate.</span><p><p class="litext" id="ALM-12054__p2445537411">Run the <strong id="ALM-12054__b8445153713116">openssl x509 -noout -text -in ${CONTROLLER_HOME}/security/certHA/server.crt</strong> command to check the effective time and due time of the HA user certificate.</p>
<ul class="subitemlist" id="ALM-12054__ul144456371811"><li id="ALM-12054__li54453377119">If yes, go to <a href="#ALM-12054__li993320915237">7</a>.</li><li id="ALM-12054__li54452371313">If no, go to <a href="#ALM-12054__li3092985115237">6</a>.</li></ul> <ul class="subitemlist" id="ALM-12054__ul144456371811"><li id="ALM-12054__li54453377119">If yes, go to <a href="#ALM-12054__li993320915237">7</a>.</li><li id="ALM-12054__li54452371313">If no, go to <a href="#ALM-12054__li3092985115237">6</a>.</li></ul>

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<h1 class="topictitle1">ALM-12055 The Certificate File Is About to Expire</h1> <h1 class="topictitle1">ALM-12055 The Certificate File Is About to Expire</h1>
<div id="body59468999"><div class="section" id="ALM-12055__section39779984"><h4 class="sectiontitle">Description</h4><p id="ALM-12055__p52259651">The system checks the certificate file on 23:00 every day. This alarm is generated if the certificate file is about to expire within 30 days.</p> <div id="body59468999"><div class="section" id="ALM-12055__section39779984"><h4 class="sectiontitle">Description</h4><p id="ALM-12055__p52259651">The system checks the certificate file on 23:00 every day. This alarm is generated if the certificate file is about to expire within 30 days.</p>
<p id="ALM-12055__p574811">This alarm is cleared when a certificate that is not about to expire is imported and the alarm detection mechanism is triggered on the next hour.</p> <p id="ALM-12055__p574811">This alarm is cleared when a certificate that is not about to expire is imported and the alarm detection mechanism is triggered on the next hour.</p>
<div class="note" id="ALM-12055__note1958711114167"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-12055__p175881411121613">For MRS 3.2.0 or later, the certificate file is checked at the beginning of each hour.</p> <div class="note" id="ALM-12055__note1958711114167"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-12055__p175881411121613">For MRS 3.2.0<span id="ALM-12055__ph174355293719">-LTS.2</span> or later, the certificate file is checked at the beginning of each hour.</p>
<p id="ALM-12055__p1243264711298">For versions earlier than MRS 3.2.0, the certificate file is checked on 23:00 every day.</p> <p id="ALM-12055__p1243264711298">For versions earlier than MRS 3.2.0<span id="ALM-12055__ph816019342517">-LTS.2</span>, the certificate file is checked on 23:00 every day.</p>
</div></div> </div></div>
</div> </div>
<div class="section" id="ALM-12055__section22475544"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-12055__section22475544"><h4 class="sectiontitle">Attribute</h4>

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<h1 class="topictitle1">ALM-19021 Handler Usage of RegionServer Exceeds the Threshold</h1> <h1 class="topictitle1">ALM-19021 Handler Usage of RegionServer Exceeds the Threshold</h1>
<div id="body0000001201062556"><div class="section" id="ALM-19021__section2812165915185"><h4 class="sectiontitle">Description</h4><p id="ALM-19021__p1231351418316">The system checks the RegionServer handler usage of each HBase service instance every 30 seconds. This alarm is generated when the handler usage of a RegionServer exceeds the threshold (90% for five consecutive times by default). This alarm is cleared if the handler usage is lower than or equal to the threshold.</p> <div id="body0000001201062556"><div class="section" id="ALM-19021__section2812165915185"><h4 class="sectiontitle">Description</h4><p id="ALM-19021__p1231351418316">The system checks the RegionServer handler usage of each HBase service instance every 30 seconds. This alarm is generated when the handler usage of a RegionServer exceeds the threshold (90% for five consecutive times by default). This alarm is cleared if the handler usage is lower than or equal to the threshold.</p>
<div class="note" id="ALM-19021__note67114372153"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-19021__p1172113719151">This section applies to MRS 3.2.0 or later.</p> <div class="note" id="ALM-19021__note67114372153"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-19021__p1172113719151">This section applies to MRS 3.2.0<span id="ALM-19021__ph174355293719">-LTS.2</span> or later.</p>
</div></div> </div></div>
</div> </div>
<div class="section" id="ALM-19021__section25955920317"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-19021__section25955920317"><h4 class="sectiontitle">Attribute</h4>

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<a name="ALM-24010"></a><a name="ALM-24010"></a> <a name="ALM-24010"></a><a name="ALM-24010"></a>
<h1 class="topictitle1">ALM-24010 Flume Certificate File Is Invalid or Damaged</h1> <h1 class="topictitle1">ALM-24010 Flume Certificate File Is Invalid or Damaged</h1>
<div id="body0000001259028053"><p id="ALM-24010__p1435536171511">This section applies to MRS 3.2.0 or later.</p> <div id="body0000001259028053"><p id="ALM-24010__p1435536171511">This section applies to MRS 3.2.0<span id="ALM-24010__ph174355293719">-LTS.2</span> or later.</p>
<div class="section" id="ALM-24010__section238231914117"><h4 class="sectiontitle">Description</h4><p id="ALM-24010__p5166194361117">Flume checks whether the Flume certificate file is valid (whether the certificate exists and whether the certificate format is correct) every hour. This alarm is generated when the certificate file is invalid or damaged. This alarm is automatically cleared when the certificate file becomes valid again.</p> <div class="section" id="ALM-24010__section238231914117"><h4 class="sectiontitle">Description</h4><p id="ALM-24010__p5166194361117">Flume checks whether the Flume certificate file is valid (whether the certificate exists and whether the certificate format is correct) every hour. This alarm is generated when the certificate file is invalid or damaged. This alarm is automatically cleared when the certificate file becomes valid again.</p>
</div> </div>
<div class="section" id="ALM-24010__section10101081213"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-24010__section10101081213"><h4 class="sectiontitle">Attribute</h4>

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<h1 class="topictitle1">ALM-24011 Flume Certificate File Is About to Expire</h1> <h1 class="topictitle1">ALM-24011 Flume Certificate File Is About to Expire</h1>
<div id="body0000001259268071"><p id="ALM-24011__p1435536171511">This section applies to MRS 3.2.0 or later.</p> <div id="body0000001259268071"><p id="ALM-24011__p1435536171511">This section applies to MRS 3.2.0<span id="ALM-24011__ph174355293719">-LTS.2</span> or later.</p>
<div class="section" id="ALM-24011__section238231914117"><h4 class="sectiontitle">Description</h4><p id="ALM-24011__p5166194361117">Flume checks whether the Flume certificate file is about to expire every hour. This alarm is generated when the remaining validity period is at most 30 days. This alarm is automatically cleared when the remaining validity period is greater than 30 days.</p> <div class="section" id="ALM-24011__section238231914117"><h4 class="sectiontitle">Description</h4><p id="ALM-24011__p5166194361117">Flume checks whether the Flume certificate file is about to expire every hour. This alarm is generated when the remaining validity period is at most 30 days. This alarm is automatically cleared when the remaining validity period is greater than 30 days.</p>
</div> </div>
<div class="section" id="ALM-24011__section10101081213"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-24011__section10101081213"><h4 class="sectiontitle">Attribute</h4>

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<h1 class="topictitle1">ALM-24012 Flume Certificate File Has Expired</h1> <h1 class="topictitle1">ALM-24012 Flume Certificate File Has Expired</h1>
<div id="body0000001213828236"><p id="ALM-24012__p1435536171511">This section applies to MRS 3.2.0 or later.</p> <div id="body0000001213828236"><p id="ALM-24012__p1435536171511">This section applies to MRS 3.2.0<span id="ALM-24012__ph174355293719">-LTS.2</span> or later.</p>
<div class="section" id="ALM-24012__section238231914117"><h4 class="sectiontitle">Description</h4><p id="ALM-24012__p5166194361117">Flume checks whether its certificate file in the system has expired every hour. This alarm is generated when the server certificate has expired. This alarm is automatically cleared when the certificate file becomes valid again.</p> <div class="section" id="ALM-24012__section238231914117"><h4 class="sectiontitle">Description</h4><p id="ALM-24012__p5166194361117">Flume checks whether its certificate file in the system has expired every hour. This alarm is generated when the server certificate has expired. This alarm is automatically cleared when the certificate file becomes valid again.</p>
</div> </div>
<div class="section" id="ALM-24012__section10101081213"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-24012__section10101081213"><h4 class="sectiontitle">Attribute</h4>

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<h1 class="topictitle1">ALM-24013 Flume MonitorServer Certificate File Is Invalid or Damaged</h1> <h1 class="topictitle1">ALM-24013 Flume MonitorServer Certificate File Is Invalid or Damaged</h1>
<div id="body0000001258868123"><p id="ALM-24013__p1435536171511">This section applies to MRS 3.2.0 or later.</p> <div id="body0000001258868123"><p id="ALM-24013__p1435536171511">This section applies to MRS 3.2.0<span id="ALM-24013__ph174355293719">-LTS.2</span> or later.</p>
<div class="section" id="ALM-24013__section238231914117"><h4 class="sectiontitle">Description</h4><p id="ALM-24013__p5166194361117">MonitorServer checks whether its certificate file is valid (whether the certificate exists and whether the certificate format is correct) every hour. This alarm is generated when the certificate file is invalid or damaged. This alarm is automatically cleared when the certificate file becomes valid again.</p> <div class="section" id="ALM-24013__section238231914117"><h4 class="sectiontitle">Description</h4><p id="ALM-24013__p5166194361117">MonitorServer checks whether its certificate file is valid (whether the certificate exists and whether the certificate format is correct) every hour. This alarm is generated when the certificate file is invalid or damaged. This alarm is automatically cleared when the certificate file becomes valid again.</p>
</div> </div>
<div class="section" id="ALM-24013__section10101081213"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-24013__section10101081213"><h4 class="sectiontitle">Attribute</h4>

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<h1 class="topictitle1">ALM-24014 Flume MonitorServer Certificate Is About to Expire</h1> <h1 class="topictitle1">ALM-24014 Flume MonitorServer Certificate Is About to Expire</h1>
<div id="body0000001214308168"><p id="ALM-24014__p1435536171511">This section applies to MRS 3.2.0 or later.</p> <div id="body0000001214308168"><p id="ALM-24014__p1435536171511">This section applies to MRS 3.2.0<span id="ALM-24014__ph174355293719">-LTS.2</span> or later.</p>
<div class="section" id="ALM-24014__section238231914117"><h4 class="sectiontitle">Description</h4><p id="ALM-24014__p5166194361117">MonitorServer checks whether its certificate file is about to expire every hour. This alarm is generated when the remaining validity period is at most 30 days. This alarm is automatically cleared when the remaining validity period is greater than 30 days.</p> <div class="section" id="ALM-24014__section238231914117"><h4 class="sectiontitle">Description</h4><p id="ALM-24014__p5166194361117">MonitorServer checks whether its certificate file is about to expire every hour. This alarm is generated when the remaining validity period is at most 30 days. This alarm is automatically cleared when the remaining validity period is greater than 30 days.</p>
</div> </div>
<div class="section" id="ALM-24014__section10101081213"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-24014__section10101081213"><h4 class="sectiontitle">Attribute</h4>

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<h1 class="topictitle1">ALM-24015 Flume MonitorServer Certificate File Has Expired</h1> <h1 class="topictitle1">ALM-24015 Flume MonitorServer Certificate File Has Expired</h1>
<div id="body0000001214148210"><p id="ALM-24015__p1435536171511">This section applies to MRS 3.2.0 or later.</p> <div id="body0000001214148210"><p id="ALM-24015__p1435536171511">This section applies to MRS 3.2.0<span id="ALM-24015__ph174355293719">-LTS.2</span> or later.</p>
<div class="section" id="ALM-24015__section238231914117"><h4 class="sectiontitle">Description</h4><p id="ALM-24015__p5166194361117">MonitorServer checks whether its certificate file in the system has expired every hour. This alarm is generated when the server certificate has expired. This alarm is automatically cleared when the MonitorServer certificate file becomes valid again.</p> <div class="section" id="ALM-24015__section238231914117"><h4 class="sectiontitle">Description</h4><p id="ALM-24015__p5166194361117">MonitorServer checks whether its certificate file in the system has expired every hour. This alarm is generated when the server certificate has expired. This alarm is automatically cleared when the MonitorServer certificate file becomes valid again.</p>
</div> </div>
<div class="section" id="ALM-24015__section10101081213"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-24015__section10101081213"><h4 class="sectiontitle">Attribute</h4>

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<h1 class="topictitle1">ALM-45001 Faulty HetuEngine Compute Instances</h1> <h1 class="topictitle1">ALM-45001 Faulty HetuEngine Compute Instances</h1>
<div id="body0000001313987920"><p id="ALM-45001__p596581613220">This alarm applies only to MRS 3.2.0 or later.</p> <div id="body0000001313987920"><p id="ALM-45001__p596581613220">This alarm applies only to MRS 3.2.0<span id="ALM-45001__ph174355293719">-LTS.2</span> or later.</p>
<div class="section" id="ALM-45001__en-us_topic_0254455541_section114220291078"><h4 class="sectiontitle">Description</h4><p id="ALM-45001__en-us_topic_0254455541_p138313155710">The system checks the <span id="ALM-45001__text719333394">HetuEngine</span> compute instance status every 60 seconds. This alarm is generated when a <span id="ALM-45001__text13447194612158">HetuEngine</span> compute instance is faulty.</p> <div class="section" id="ALM-45001__en-us_topic_0254455541_section114220291078"><h4 class="sectiontitle">Description</h4><p id="ALM-45001__en-us_topic_0254455541_p138313155710">The system checks the <span id="ALM-45001__text719333394">HetuEngine</span> compute instance status every 60 seconds. This alarm is generated when a <span id="ALM-45001__text13447194612158">HetuEngine</span> compute instance is faulty.</p>
<p id="ALM-45001__en-us_topic_0254455541_p163832155718">This alarm is cleared when all faulty <span id="ALM-45001__text14115563915">HetuEngine</span> compute instances are restored.</p> <p id="ALM-45001__en-us_topic_0254455541_p163832155718">This alarm is cleared when all faulty <span id="ALM-45001__text14115563915">HetuEngine</span> compute instances are restored.</p>
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<h1 class="topictitle1">ALM-45429 Table Metadata Synchronization Failed on the Added ClickHouse Node</h1> <h1 class="topictitle1">ALM-45429 Table Metadata Synchronization Failed on the Added ClickHouse Node</h1>
<div id="body0000001160478452"><div class="note" id="ALM-45429__note1752311344012"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-45429__p1152415341202">This section applies only to MRS 3.1.2 or later.</p> <div id="body0000001160478452"><div class="note" id="ALM-45429__note1752311344012"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-45429__p1152415341202">This section applies only to MRS 3.1.2<span id="ALM-45429__ph174355293719">-LTS.6</span> or later.</p>
</div></div> </div></div>
<div class="section" id="ALM-45429__section13447226"><h4 class="sectiontitle">Description</h4><p id="ALM-45429__p13518023133811">This alarm is generated when the local table corresponding to the distributed table fails to be created during ClickHouse capacity expansion.</p> <div class="section" id="ALM-45429__section13447226"><h4 class="sectiontitle">Description</h4><p id="ALM-45429__p13518023133811">This alarm is generated when the local table corresponding to the distributed table fails to be created during ClickHouse capacity expansion.</p>
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<h1 class="topictitle1">ALM-45430 Permission Metadata Synchronization Failed on the Added ClickHouse Node</h1> <h1 class="topictitle1">ALM-45430 Permission Metadata Synchronization Failed on the Added ClickHouse Node</h1>
<div id="body0000001205758497"><div class="note" id="ALM-45430__note1752311344012"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-45430__p1152415341202">This section applies only to MRS 3.1.2 or later.</p> <div id="body0000001205758497"><div class="note" id="ALM-45430__note1752311344012"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="ALM-45430__p1152415341202">This section applies only to MRS 3.1.2<span id="ALM-45430__ph174355293719">-LTS.6</span> or later.</p>
</div></div> </div></div>
<div class="section" id="ALM-45430__section13447226"><h4 class="sectiontitle">Description</h4><p id="ALM-45430__p13518023133811">This alarm is generated when user and permission information fails to be synchronized during ClickHouse capacity expansion.</p> <div class="section" id="ALM-45430__section13447226"><h4 class="sectiontitle">Description</h4><p id="ALM-45430__p13518023133811">This alarm is generated when user and permission information fails to be synchronized during ClickHouse capacity expansion.</p>
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<h1 class="topictitle1">ALM-45635 FlinkServer Job Execution Failure</h1> <h1 class="topictitle1">ALM-45635 FlinkServer Job Execution Failure</h1>
<div id="body0000001150940918"><p id="ALM-45635__p916718178919">This section applies to MRS 3.2.0 or later.</p> <div id="body0000001150940918"><p id="ALM-45635__p916718178919">This section applies to MRS 3.2.0<span id="ALM-45635__ph174355293719">-LTS.2</span> or later.</p>
<div class="section" id="ALM-45635__section35136898"><h4 class="sectiontitle">Description</h4><p id="ALM-45635__p19601475282">The system checks whether FlinkServer jobs fail to be executed every 10 seconds. This alarm is generated when a FlinkServer job fails. This alarm is cleared when the job is successfully restarted.</p> <div class="section" id="ALM-45635__section35136898"><h4 class="sectiontitle">Description</h4><p id="ALM-45635__p19601475282">The system checks whether FlinkServer jobs fail to be executed every 10 seconds. This alarm is generated when a FlinkServer job fails. This alarm is cleared when the job is successfully restarted.</p>
</div> </div>
<div class="section" id="ALM-45635__section47796626"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-45635__section47796626"><h4 class="sectiontitle">Attribute</h4>

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<h1 class="topictitle1">ALM-45636 Flink Job Checkpoints Keep Failing</h1> <h1 class="topictitle1">ALM-45636 Flink Job Checkpoints Keep Failing</h1>
<div id="body32001227"><p id="ALM-45636-1__en-us_topic_0000001430978870_p13412105552419">This section applies to MRS 3.2.0 or later.</p> <div id="body32001227"><p id="ALM-45636-1__en-us_topic_0000001430978870_p13412105552419">This section applies to MRS 3.2.0<span id="ALM-45636-1__ph174355293719">-LTS.2</span> or later.</p>
<div class="section" id="ALM-45636-1__en-us_topic_0000001430978870_section35136898"><h4 class="sectiontitle">Description</h4><p id="ALM-45636-1__en-us_topic_0000001430978870_p1969103114813">The system checks the number of consecutive checkpoint failures based on the configured alarm checking interval. This alarm is generated when the number of consecutive checkpoint failures of a FlinkServer job reaches the configured threshold. This alarm is cleared when checkpoints are recovered or the job is successfully restarted.</p> <div class="section" id="ALM-45636-1__en-us_topic_0000001430978870_section35136898"><h4 class="sectiontitle">Description</h4><p id="ALM-45636-1__en-us_topic_0000001430978870_p1969103114813">The system checks the number of consecutive checkpoint failures based on the configured alarm checking interval. This alarm is generated when the number of consecutive checkpoint failures of a FlinkServer job reaches the configured threshold. This alarm is cleared when checkpoints are recovered or the job is successfully restarted.</p>
</div> </div>
<div class="section" id="ALM-45636-1__en-us_topic_0000001430978870_section47796626"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-45636-1__en-us_topic_0000001430978870_section47796626"><h4 class="sectiontitle">Attribute</h4>

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<h1 class="topictitle1">ALM-45636 FlinkServer Job Checkpoints Keep Failing</h1> <h1 class="topictitle1">ALM-45636 FlinkServer Job Checkpoints Keep Failing</h1>
<div id="body0000001196860675"><p id="ALM-45636__p916718178919">This section applies to MRS 3.2.0 or later.</p> <div id="body0000001196860675"><p id="ALM-45636__p916718178919">This section applies to MRS 3.2.0<span id="ALM-45636__ph174355293719">-LTS.2</span> or later.</p>
<div class="section" id="ALM-45636__section35136898"><h4 class="sectiontitle">Description</h4><p id="ALM-45636__p1969103114813">The system checks the number of consecutive checkpoint failures based on the configured alarm checking interval. This alarm is generated when the number of consecutive checkpoint failures of a FlinkServer job reaches the configured threshold. This alarm is cleared when checkpoints are recovered or the job is successfully restarted.</p> <div class="section" id="ALM-45636__section35136898"><h4 class="sectiontitle">Description</h4><p id="ALM-45636__p1969103114813">The system checks the number of consecutive checkpoint failures based on the configured alarm checking interval. This alarm is generated when the number of consecutive checkpoint failures of a FlinkServer job reaches the configured threshold. This alarm is cleared when checkpoints are recovered or the job is successfully restarted.</p>
</div> </div>
<div class="section" id="ALM-45636__section47796626"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-45636__section47796626"><h4 class="sectiontitle">Attribute</h4>

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<h1 class="topictitle1">ALM-45637 FlinkServer Task Is Continuously Under Back Pressure</h1> <h1 class="topictitle1">ALM-45637 FlinkServer Task Is Continuously Under Back Pressure</h1>
<div id="body0000001196940777"><p id="ALM-45637__p916718178919">This section applies to MRS 3.1.2 or later.</p> <div id="body0000001196940777"><p id="ALM-45637__p916718178919">This section applies to MRS 3.1.2<span id="ALM-45637__ph174355293719">-LTS.6</span> or later.</p>
<div class="section" id="ALM-45637__section35136898"><h4 class="sectiontitle">Description</h4><p id="ALM-45637__p1969103114813">The system checks the back pressure duration of FlinkServer tasks based on the configured alarm checking interval. This alarm is generated when the back pressure duration of a FlinkServer task reaches the configured threshold. This alarm is cleared when the task back pressure is recovered or the job is successfully restarted.</p> <div class="section" id="ALM-45637__section35136898"><h4 class="sectiontitle">Description</h4><p id="ALM-45637__p1969103114813">The system checks the back pressure duration of FlinkServer tasks based on the configured alarm checking interval. This alarm is generated when the back pressure duration of a FlinkServer task reaches the configured threshold. This alarm is cleared when the task back pressure is recovered or the job is successfully restarted.</p>
</div> </div>
<div class="section" id="ALM-45637__section47796626"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-45637__section47796626"><h4 class="sectiontitle">Attribute</h4>

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<h1 class="topictitle1">ALM-45638 Number of Restarts After Flink Job Failures Exceeds the Threshold</h1> <h1 class="topictitle1">ALM-45638 Number of Restarts After Flink Job Failures Exceeds the Threshold</h1>
<div id="body32001227"><p id="ALM-45638-1__en-us_topic_0000001480898081_p13412105552419">This section applies to MRS 3.2.0 or later.</p> <div id="body32001227"><p id="ALM-45638-1__en-us_topic_0000001480898081_p13412105552419">This section applies to MRS 3.2.0<span id="ALM-45638-1__ph174355293719">-LTS.2</span> or later.</p>
<div class="section" id="ALM-45638-1__en-us_topic_0000001480898081_section35136898"><h4 class="sectiontitle">Description</h4><p id="ALM-45638-1__en-us_topic_0000001480898081_p1969103114813">The system checks the number of Flink job restarts based on the alarm checking interval. This alarm is generated when the number exceeds the configured threshold. This alarm is cleared when the job is restarted.</p> <div class="section" id="ALM-45638-1__en-us_topic_0000001480898081_section35136898"><h4 class="sectiontitle">Description</h4><p id="ALM-45638-1__en-us_topic_0000001480898081_p1969103114813">The system checks the number of Flink job restarts based on the alarm checking interval. This alarm is generated when the number exceeds the configured threshold. This alarm is cleared when the job is restarted.</p>
</div> </div>
<div class="section" id="ALM-45638-1__en-us_topic_0000001480898081_section47796626"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-45638-1__en-us_topic_0000001480898081_section47796626"><h4 class="sectiontitle">Attribute</h4>

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<h1 class="topictitle1">ALM-45638 Number of Restarts After FlinkServer Job Failures Exceeds the Threshold</h1> <h1 class="topictitle1">ALM-45638 Number of Restarts After FlinkServer Job Failures Exceeds the Threshold</h1>
<div id="body0000001150781104"><p id="ALM-45638__p916718178919">This section applies to MRS 3.1.2 or later.</p> <div id="body0000001150781104"><p id="ALM-45638__p916718178919">This section applies to MRS 3.1.2<span id="ALM-45638__ph174355293719">-LTS.6</span> or later.</p>
<div class="section" id="ALM-45638__section35136898"><h4 class="sectiontitle">Description</h4><p id="ALM-45638__p1969103114813">The system checks the number of FlinkServer job restarts based on the alarm checking interval. This alarm is generated when the number exceeds the configured threshold. This alarm is cleared when the job is restarted.</p> <div class="section" id="ALM-45638__section35136898"><h4 class="sectiontitle">Description</h4><p id="ALM-45638__p1969103114813">The system checks the number of FlinkServer job restarts based on the alarm checking interval. This alarm is generated when the number exceeds the configured threshold. This alarm is cleared when the job is restarted.</p>
</div> </div>
<div class="section" id="ALM-45638__section47796626"><h4 class="sectiontitle">Attribute</h4> <div class="section" id="ALM-45638__section47796626"><h4 class="sectiontitle">Attribute</h4>

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<h1 class="topictitle1">ALM-45640 FlinkServer Heartbeat Interruption Between the Active and Standby Nodes</h1> <h1 class="topictitle1">ALM-45640 FlinkServer Heartbeat Interruption Between the Active and Standby Nodes</h1>
<div id="body0000001349018936"><p id="ALM-45640__p15858191817246">This section applies to MRS 3.2.0 or later.</p> <div id="body0000001349018936"><p id="ALM-45640__p15858191817246">This section applies to MRS 3.2.0<span id="ALM-45640__ph174355293719">-LTS.2</span> or later.</p>
<div class="section" id="ALM-45640__section36581341"><h4 class="sectiontitle">Description</h4><p id="ALM-45640__p29753319">This alarm is generated when the FlinkServer active node or standby node does not receive heartbeat messages from the peer for 30 seconds (heartbeat interruption duration configured in keepalive).</p> <div class="section" id="ALM-45640__section36581341"><h4 class="sectiontitle">Description</h4><p id="ALM-45640__p29753319">This alarm is generated when the FlinkServer active node or standby node does not receive heartbeat messages from the peer for 30 seconds (heartbeat interruption duration configured in keepalive).</p>
<p id="ALM-45640__p66453285">This alarm is cleared when the heartbeat recovers.</p> <p id="ALM-45640__p66453285">This alarm is cleared when the heartbeat recovers.</p>
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<h1 class="topictitle1">ALM-45641 Data Synchronization Exception Between the Active and Standby FlinkServer Nodes</h1> <h1 class="topictitle1">ALM-45641 Data Synchronization Exception Between the Active and Standby FlinkServer Nodes</h1>
<div id="body0000001349190156"><p id="ALM-45641__p15858191817246">This section applies to MRS 3.2.0 or later.</p> <div id="body0000001349190156"><p id="ALM-45641__p15858191817246">This section applies to MRS 3.2.0<span id="ALM-45641__ph174355293719">-LTS.2</span> or later.</p>
<div class="section" id="ALM-45641__section663215"><h4 class="sectiontitle">Description</h4><p id="ALM-45641__p7378398">The system checks data synchronization between the active and standby FlinkServer nodes every 60 seconds. This alarm is generated when the standby FlinkServer node fails to synchronize files with the active FlinkServer node.</p> <div class="section" id="ALM-45641__section663215"><h4 class="sectiontitle">Description</h4><p id="ALM-45641__p7378398">The system checks data synchronization between the active and standby FlinkServer nodes every 60 seconds. This alarm is generated when the standby FlinkServer node fails to synchronize files with the active FlinkServer node.</p>
<p id="ALM-45641__p66405588">This alarm is cleared when the standby FlinkServer synchronizes files with the active FlinkServer.</p> <p id="ALM-45641__p66405588">This alarm is cleared when the standby FlinkServer synchronizes files with the active FlinkServer.</p>
</div> </div>
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<ul id="ALM-45641__ul193435212343"><li id="ALM-45641__li43431214342">If the file size is 0 and all values in the permission column are -, the file is a junk file. Run the following command to delete it:<p id="ALM-45641__p757404610368"><a name="ALM-45641__li43431214342"></a><a name="li43431214342"></a><strong id="ALM-45641__b2059920416372">rm -rf </strong><em id="ALM-45641__i11323171812474">Files to be deleted</em></p> <ul id="ALM-45641__ul193435212343"><li id="ALM-45641__li43431214342">If the file size is 0 and all values in the permission column are -, the file is a junk file. Run the following command to delete it:<p id="ALM-45641__p757404610368"><a name="ALM-45641__li43431214342"></a><a name="li43431214342"></a><strong id="ALM-45641__b2059920416372">rm -rf </strong><em id="ALM-45641__i11323171812474">Files to be deleted</em></p>
<p id="ALM-45641__p2971420151819">Wait for several minutes and check whether the alarm is cleared. If the alarm persists, go to <a href="#ALM-45641__li210153713915">12</a>.</p> <p id="ALM-45641__p2971420151819">Wait for several minutes and check whether the alarm is cleared. If the alarm persists, go to <a href="#ALM-45641__li210153713915">12</a>.</p>
</li><li id="ALM-45641__li16324131020345">If the file size is not 0, go to <a href="#ALM-45641__li210153713915">12</a>.</li></ul> </li><li id="ALM-45641__li16324131020345">If the file size is not 0, go to <a href="#ALM-45641__li210153713915">12</a>.</li></ul>
</p></li><li id="ALM-45641__li210153713915"><a name="ALM-45641__li210153713915"></a><a name="li210153713915"></a><span>View the log file generated when the alarm is reported.</span><p><ol type="a" id="ALM-45641__ol430319264420"><li id="ALM-45641__li1303026154215">Run the following command to go to the HA run log file path of the current cluster: <p id="ALM-45641__p18441029183711"><a name="ALM-45641__li1303026154215"></a><a name="li1303026154215"></a><strong id="ALM-45641__b1744629193712">cd /var/log/Bigdata/flink/flinkserver/ha/runlog</strong></p> </p></li><li id="ALM-45641__li210153713915"><a name="ALM-45641__li210153713915"></a><a name="li210153713915"></a><span>View the log file generated when the alarm is reported.</span><p><ol type="a" id="ALM-45641__ol430319264420"><li id="ALM-45641__li1303026154215">Run the following command to go to the HA run log file path of the current cluster:<p id="ALM-45641__p18441029183711"><a name="ALM-45641__li1303026154215"></a><a name="li1303026154215"></a><strong id="ALM-45641__b1744629193712">cd /var/log/Bigdata/flink/flinkserver/ha/runlog</strong></p>
</li><li id="ALM-45641__li4350341502">Decompress log file and view the logs generated when the alarm is reported.<p id="ALM-45641__p144701722175010"><a name="ALM-45641__li4350341502"></a><a name="li4350341502"></a>For example, if the name of the file is <strong id="ALM-45641__b1669441615512">ha.log.2021-03-22_12-00-07.gz</strong>, run the following command:</p> </li><li id="ALM-45641__li4350341502">Decompress log file and view the logs generated when the alarm is reported.<p id="ALM-45641__p144701722175010"><a name="ALM-45641__li4350341502"></a><a name="li4350341502"></a>For example, if the name of the file is <strong id="ALM-45641__b1669441615512">ha.log.2021-03-22_12-00-07.gz</strong>, run the following command:</p>
<p id="ALM-45641__p111371341514"><strong id="ALM-45641__b2561510535">gunzip </strong><em id="ALM-45641__i106521648531">ha.log.2021-03-22_12-00-07.gz</em></p> <p id="ALM-45641__p111371341514"><strong id="ALM-45641__b2561510535">gunzip </strong><em id="ALM-45641__i106521648531">ha.log.2021-03-22_12-00-07.gz</em></p>
<p id="ALM-45641__p636791434012"><strong id="ALM-45641__b32779764611">vi </strong><em id="ALM-45641__i12778171285311">ha.log.2021-03-22_12-00-07</em></p> <p id="ALM-45641__p636791434012"><strong id="ALM-45641__b32779764611">vi </strong><em id="ALM-45641__i12778171285311">ha.log.2021-03-22_12-00-07</em></p>

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<div class="notice" id="admin_guide_000150__note43221770"><span class="noticetitle"><img src="public_sys-resources/notice_3.0-en-us.png"> </span><div class="noticebody"><ul id="admin_guide_000150__ul31209399191055"><li class="cautiontext" id="admin_guide_000150__li38879646191055">Modify password policies based on service security requirements, because they involve user management security. Otherwise, security risks may be incurred.</li><li id="admin_guide_000150__li991813191057">Change the user password after modifying the password policy, and then the new password policy can take effect.</li></ul> <div class="notice" id="admin_guide_000150__note43221770"><span class="noticetitle"><img src="public_sys-resources/notice_3.0-en-us.png"> </span><div class="noticebody"><ul id="admin_guide_000150__ul31209399191055"><li class="cautiontext" id="admin_guide_000150__li38879646191055">Modify password policies based on service security requirements, because they involve user management security. Otherwise, security risks may be incurred.</li><li id="admin_guide_000150__li991813191057">Change the user password after modifying the password policy, and then the new password policy can take effect.</li></ul>
</div></div> </div></div>
</div> </div>
<div class="section" id="admin_guide_000150__section19974122411820"><h4 class="sectiontitle">Modifying a Password Policy (Versions Earlier than MRS 3.1.2)</h4><ol id="admin_guide_000150__ol34613479"><li id="admin_guide_000150__en-us_topic_0046736864_li52358784"><span>Log in to FusionInsight Manager.</span></li><li id="admin_guide_000150__en-us_topic_0046736864_li1467012"><span>Choose <span class="menucascade" id="admin_guide_000150__menucascade291035120487"><b><span class="uicontrol" id="admin_guide_000150__uicontrol1591085174817">System</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol13398550489">Permission</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol1844412019492">Security Policy</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol356417503178">Password Policy</span></b></span>.</span></li><li id="admin_guide_000150__li13859124942019"><span>Click <strong id="admin_guide_000150__b154635621812">Modify</strong> in the <strong id="admin_guide_000150__b14629191101915">Operation</strong> column and modify the password policy as prompted.</span><p><div class="p" id="admin_guide_000150__p1210105416203">For details about the parameters, see <a href="#admin_guide_000150__table_1">Table 1</a>. <div class="section" id="admin_guide_000150__section19974122411820"><h4 class="sectiontitle">Modifying a Password Policy (Versions Earlier than MRS 3.1.2<span id="admin_guide_000150__ph169115711367">-LTS.6</span>)</h4><ol id="admin_guide_000150__ol34613479"><li id="admin_guide_000150__en-us_topic_0046736864_li52358784"><span>Log in to FusionInsight Manager.</span></li><li id="admin_guide_000150__en-us_topic_0046736864_li1467012"><span>Choose <span class="menucascade" id="admin_guide_000150__menucascade291035120487"><b><span class="uicontrol" id="admin_guide_000150__uicontrol1591085174817">System</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol13398550489">Permission</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol1844412019492">Security Policy</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol356417503178">Password Policy</span></b></span>.</span></li><li id="admin_guide_000150__li13859124942019"><span>Click <strong id="admin_guide_000150__b154635621812">Modify</strong> in the <strong id="admin_guide_000150__b14629191101915">Operation</strong> column and modify the password policy as prompted.</span><p><div class="p" id="admin_guide_000150__p1210105416203">For details about the parameters, see <a href="#admin_guide_000150__table_1">Table 1</a>.
<div class="tablenoborder"><a name="admin_guide_000150__table_1"></a><a name="table_1"></a><table cellpadding="4" cellspacing="0" summary="" id="admin_guide_000150__table_1" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Password policy parameters</caption><thead align="left"><tr id="admin_guide_000150__row31118786"><th align="left" class="cellrowborder" valign="top" width="26.26%" id="mcps1.3.2.2.3.2.1.2.2.3.1.1"><p id="admin_guide_000150__p37593705"><strong id="admin_guide_000150__b16267185414312">Parameter</strong></p> <div class="tablenoborder"><a name="admin_guide_000150__table_1"></a><a name="table_1"></a><table cellpadding="4" cellspacing="0" summary="" id="admin_guide_000150__table_1" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Password policy parameters</caption><thead align="left"><tr id="admin_guide_000150__row31118786"><th align="left" class="cellrowborder" valign="top" width="26.26%" id="mcps1.3.2.2.3.2.1.2.2.3.1.1"><p id="admin_guide_000150__p37593705"><strong id="admin_guide_000150__b16267185414312">Parameter</strong></p>
</th> </th>
<th align="left" class="cellrowborder" valign="top" width="73.74000000000001%" id="mcps1.3.2.2.3.2.1.2.2.3.1.2"><p id="admin_guide_000150__p25191285"><strong id="admin_guide_000150__b460685511319">Description</strong></p> <th align="left" class="cellrowborder" valign="top" width="73.74000000000001%" id="mcps1.3.2.2.3.2.1.2.2.3.1.2"><p id="admin_guide_000150__p25191285"><strong id="admin_guide_000150__b460685511319">Description</strong></p>
@ -58,7 +58,7 @@
</div> </div>
</p></li><li id="admin_guide_000150__li865418242218"><span>Click <strong id="admin_guide_000150__b1673223165513">OK</strong> to save the configurations. Change the user password after modifying the password policy, and then the new password policy can take effect.</span></li></ol> </p></li><li id="admin_guide_000150__li865418242218"><span>Click <strong id="admin_guide_000150__b1673223165513">OK</strong> to save the configurations. Change the user password after modifying the password policy, and then the new password policy can take effect.</span></li></ol>
</div> </div>
<div class="section" id="admin_guide_000150__section6250151814223"><h4 class="sectiontitle">Adding a Password Policy (MRS 3.1.2 and Later Versions)</h4><ol id="admin_guide_000150__ol9865122382218"><li id="admin_guide_000150__li186515231228"><span>Log in to FusionInsight Manager.</span></li><li id="admin_guide_000150__li1486515233223"><span>Choose <span class="menucascade" id="admin_guide_000150__menucascade39352695515"><b><span class="uicontrol" id="admin_guide_000150__uicontrol1492817610552">System</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol199346615519">Permission</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol13935869557">Security Policy</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol129351562558">Password Policy</span></b></span>.</span></li><li id="admin_guide_000150__li16866142312223"><span>Click <strong id="admin_guide_000150__b9932124725611">Add Password Policy</strong> and modify the password policy as prompted.</span><p><div class="p" id="admin_guide_000150__p7866923182213">For details about the parameters, see <a href="#admin_guide_000150__table18661123192217">Table 2</a>. <div class="section" id="admin_guide_000150__section6250151814223"><h4 class="sectiontitle">Adding a Password Policy (MRS 3.1.2<span id="admin_guide_000150__ph1814113683711">-LTS.6</span> and Later Versions)</h4><ol id="admin_guide_000150__ol9865122382218"><li id="admin_guide_000150__li186515231228"><span>Log in to FusionInsight Manager.</span></li><li id="admin_guide_000150__li1486515233223"><span>Choose <span class="menucascade" id="admin_guide_000150__menucascade39352695515"><b><span class="uicontrol" id="admin_guide_000150__uicontrol1492817610552">System</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol199346615519">Permission</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol13935869557">Security Policy</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol129351562558">Password Policy</span></b></span>.</span></li><li id="admin_guide_000150__li16866142312223"><span>Click <strong id="admin_guide_000150__b9932124725611">Add Password Policy</strong> and modify the password policy as prompted.</span><p><div class="p" id="admin_guide_000150__p7866923182213">For details about the parameters, see <a href="#admin_guide_000150__table18661123192217">Table 2</a>.
<div class="tablenoborder"><a name="admin_guide_000150__table18661123192217"></a><a name="table18661123192217"></a><table cellpadding="4" cellspacing="0" summary="" id="admin_guide_000150__table18661123192217" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Password policy parameters</caption><thead align="left"><tr id="admin_guide_000150__row386622372213"><th align="left" class="cellrowborder" valign="top" width="26.26%" id="mcps1.3.3.2.3.2.1.2.2.3.1.1"><p id="admin_guide_000150__p158661723202218"><strong id="admin_guide_000150__b1294653534">Parameter</strong></p> <div class="tablenoborder"><a name="admin_guide_000150__table18661123192217"></a><a name="table18661123192217"></a><table cellpadding="4" cellspacing="0" summary="" id="admin_guide_000150__table18661123192217" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Password policy parameters</caption><thead align="left"><tr id="admin_guide_000150__row386622372213"><th align="left" class="cellrowborder" valign="top" width="26.26%" id="mcps1.3.3.2.3.2.1.2.2.3.1.1"><p id="admin_guide_000150__p158661723202218"><strong id="admin_guide_000150__b1294653534">Parameter</strong></p>
</th> </th>
<th align="left" class="cellrowborder" valign="top" width="73.74000000000001%" id="mcps1.3.3.2.3.2.1.2.2.3.1.2"><p id="admin_guide_000150__p2866102319225"><strong id="admin_guide_000150__b1921455193">Description</strong></p> <th align="left" class="cellrowborder" valign="top" width="73.74000000000001%" id="mcps1.3.3.2.3.2.1.2.2.3.1.2"><p id="admin_guide_000150__p2866102319225"><strong id="admin_guide_000150__b1921455193">Description</strong></p>
@ -120,12 +120,12 @@
<div class="note" id="admin_guide_000150__note88681023142216"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="admin_guide_000150__p16375121220013">A maximum of 32 password policies can be created.</p> <div class="note" id="admin_guide_000150__note88681023142216"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="admin_guide_000150__p16375121220013">A maximum of 32 password policies can be created.</p>
</div></div> </div></div>
</div> </div>
<div class="section" id="admin_guide_000150__section187449582082"><h4 class="sectiontitle">Modifying a Password Policy (MRS 3.1.2 and Later Versions)</h4><ol id="admin_guide_000150__ol201598533918"><li id="admin_guide_000150__li1466014552916"><span>Log in to FusionInsight Manager.</span></li><li id="admin_guide_000150__li26609551992"><span>Choose <span class="menucascade" id="admin_guide_000150__menucascade11887182719472"><b><span class="uicontrol" id="admin_guide_000150__uicontrol9886727174720">System</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol12887102744712">Permission</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol28871279479">Security Policy</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol5887182712478">Password Policy</span></b></span>.</span></li><li id="admin_guide_000150__li1314701531110"><span>Click <strong id="admin_guide_000150__b421204670112333">Modify</strong> in the row that contains the target password policy. On the <strong id="admin_guide_000150__b866148795112333">Modify Password Policy</strong> page, modify the password policy as prompted.</span><p><p id="admin_guide_000150__p11364515171810">For details about the parameters, see <a href="#admin_guide_000150__table18661123192217">Table 2</a>.</p> <div class="section" id="admin_guide_000150__section187449582082"><h4 class="sectiontitle">Modifying a Password Policy (MRS 3.1.2<span id="admin_guide_000150__ph174355293719">-LTS.6</span> and Later Versions)</h4><ol id="admin_guide_000150__ol201598533918"><li id="admin_guide_000150__li1466014552916"><span>Log in to FusionInsight Manager.</span></li><li id="admin_guide_000150__li26609551992"><span>Choose <span class="menucascade" id="admin_guide_000150__menucascade11887182719472"><b><span class="uicontrol" id="admin_guide_000150__uicontrol9886727174720">System</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol12887102744712">Permission</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol28871279479">Security Policy</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol5887182712478">Password Policy</span></b></span>.</span></li><li id="admin_guide_000150__li1314701531110"><span>Click <strong id="admin_guide_000150__b421204670112333">Modify</strong> in the row that contains the target password policy. On the <strong id="admin_guide_000150__b866148795112333">Modify Password Policy</strong> page, modify the password policy as prompted.</span><p><p id="admin_guide_000150__p11364515171810">For details about the parameters, see <a href="#admin_guide_000150__table18661123192217">Table 2</a>.</p>
</p></li><li id="admin_guide_000150__li758114362179"><span>Click <strong id="admin_guide_000150__b1282569938">OK</strong> to save the configurations.</span></li></ol> </p></li><li id="admin_guide_000150__li758114362179"><span>Click <strong id="admin_guide_000150__b1282569938">OK</strong> to save the configurations.</span></li></ol>
<div class="note" id="admin_guide_000150__note632914427183"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="admin_guide_000150__ul206311451181818"><li id="admin_guide_000150__li1363111514184">Users (except <strong id="admin_guide_000150__b7311162013522">admin</strong>) cannot modify their own password policies.</li><li id="admin_guide_000150__li1511145410181">After the password policy bound to a user is modified, if the remaining password validity period is greater than the password validity period in the new password policy, the password validity period is set to the validity period in the new password policy. If the remaining password validity period is less than the password validity period in the new password policy, the password validity period remains unchanged.</li></ul> <div class="note" id="admin_guide_000150__note632914427183"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="admin_guide_000150__ul206311451181818"><li id="admin_guide_000150__li1363111514184">Users (except <strong id="admin_guide_000150__b7311162013522">admin</strong>) cannot modify their own password policies.</li><li id="admin_guide_000150__li1511145410181">After the password policy bound to a user is modified, if the remaining password validity period is greater than the password validity period in the new password policy, the password validity period is set to the validity period in the new password policy. If the remaining password validity period is less than the password validity period in the new password policy, the password validity period remains unchanged.</li></ul>
</div></div> </div></div>
</div> </div>
<div class="section" id="admin_guide_000150__section20530161552018"><h4 class="sectiontitle">Deleting a Password Policy (MRS 3.1.2 and Later Versions)</h4><ol id="admin_guide_000150__ol745693816207"><li id="admin_guide_000150__li144563382205"><span>Log in to FusionInsight Manager.</span></li><li id="admin_guide_000150__li104561038152013"><span>Choose <span class="menucascade" id="admin_guide_000150__menucascade296020413545"><b><span class="uicontrol" id="admin_guide_000150__uicontrol1295918414548">System</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol59590412548">Permission</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol1895915435418">Security Policy</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol14960245540">Password Policy</span></b></span>.</span></li><li id="admin_guide_000150__li8457103882011"><span>Click <strong id="admin_guide_000150__b1172360722112333">Delete</strong> in the row that contains the target password policy. In the dialog box that is displayed, click <strong id="admin_guide_000150__b1014836981112333">OK</strong>.</span></li></ol> <div class="section" id="admin_guide_000150__section20530161552018"><h4 class="sectiontitle">Deleting a Password Policy (MRS 3.1.2<span id="admin_guide_000150__ph4884545381">-LTS.6</span> and Later Versions)</h4><ol id="admin_guide_000150__ol745693816207"><li id="admin_guide_000150__li144563382205"><span>Log in to FusionInsight Manager.</span></li><li id="admin_guide_000150__li104561038152013"><span>Choose <span class="menucascade" id="admin_guide_000150__menucascade296020413545"><b><span class="uicontrol" id="admin_guide_000150__uicontrol1295918414548">System</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol59590412548">Permission</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol1895915435418">Security Policy</span></b> &gt; <b><span class="uicontrol" id="admin_guide_000150__uicontrol14960245540">Password Policy</span></b></span>.</span></li><li id="admin_guide_000150__li8457103882011"><span>Click <strong id="admin_guide_000150__b1172360722112333">Delete</strong> in the row that contains the target password policy. In the dialog box that is displayed, click <strong id="admin_guide_000150__b1014836981112333">OK</strong>.</span></li></ol>
<div class="note" id="admin_guide_000150__note1865734013217"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="admin_guide_000150__p14657204016214">The default password policy and the password policy that has been bound to a user cannot be deleted.</p> <div class="note" id="admin_guide_000150__note1865734013217"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="admin_guide_000150__p14657204016214">The default password policy and the password policy that has been bound to a user cannot be deleted.</p>
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<h1 class="topictitle1">Resetting the Component Database User Password</h1> <h1 class="topictitle1">Resetting the Component Database User Password</h1>
<div id="body0000001155943208"><div class="section" id="admin_guide_000363__section60138057114651"><h4 class="sectiontitle">Scenario</h4><p id="admin_guide_000363__p39344466114651">Default passwords for components in the MRS cluster to connect to the DBService database are random. You are advised to periodically reset the passwords of component database users to improve system O&amp;M security.</p> <div id="body0000001155943208"><div class="section" id="admin_guide_000363__section60138057114651"><h4 class="sectiontitle">Scenario</h4><p id="admin_guide_000363__p39344466114651">Default passwords for components in the MRS cluster to connect to the DBService database are random. You are advised to periodically reset the passwords of component database users to improve system O&amp;M security.</p>
<div class="note" id="admin_guide_000363__note1469444610427"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="admin_guide_000363__p15695194616421">This section applies only to MRS 3.1.2 or later. For versions earlier than MRS 3.1.2, see <a href="admin_guide_000261.html">Changing the Password for a Component Database User</a>.</p> <div class="note" id="admin_guide_000363__note1469444610427"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="admin_guide_000363__p15695194616421">This section applies only to MRS 3.1.2<span id="admin_guide_000363__ph174355293719">-LTS.6</span> or later. For versions earlier than MRS 3.1.2<span id="admin_guide_000363__ph2933162917393">-LTS.6</span>, see <a href="admin_guide_000261.html">Changing the Password for a Component Database User</a>.</p>
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<div class="section" id="admin_guide_000363__section18555875114651"><h4 class="sectiontitle">Impact on the System</h4><p id="admin_guide_000363__p26630867114651">To reset passwords, you need to stop and then restart services, during which services are unavailable.</p> <div class="section" id="admin_guide_000363__section18555875114651"><h4 class="sectiontitle">Impact on the System</h4><p id="admin_guide_000363__p26630867114651">To reset passwords, you need to stop and then restart services, during which services are unavailable.</p>

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<h1 class="topictitle1">Methods of Creating MRS Clusters</h1> <h1 class="topictitle1">Methods of Creating MRS Clusters</h1>
<div id="body1559723296945"><p id="mrs_01_0025__p8060118">This section describes how to <span id="mrs_01_0025__text109751230103817">create</span> MRS clusters.</p> <div id="body1559723296945"><p id="mrs_01_0025__p8060118">This section describes how to <span id="mrs_01_0025__text109751230103817">create</span> MRS clusters.</p>
<ul id="mrs_01_0025__ul485919813916"><li id="mrs_01_0025__li1985910873918"><a href="mrs_01_0512.html">Quick Creation of a Hadoop Analysis Cluster</a>: On the <strong id="mrs_01_0025__b187601044346">Quick Config</strong> tab page, you can quickly configure parameters to <span id="mrs_01_0025__text13430181911386">create</span> Hadoop analysis clusters within a few minutes, facilitating analysis and queries of vast amounts of data.</li><li id="mrs_01_0025__li1226619519105"><a href="mrs_01_0496.html">Quick Creation of an HBase Analysis Cluster</a>: On the <strong id="mrs_01_0025__b1841135603911">Quick Config</strong> tab page, you can quickly configure parameters to <span id="mrs_01_0025__text13310159123819">create</span> HBase query clusters within a few minutes, facilitating storage and distributed computing of vast amounts of data.</li><li id="mrs_01_0025__li1012110159108"><a href="mrs_01_0497.html">Quick Creation of a Kafka Streaming Cluster</a>: On the <strong id="mrs_01_0025__b1337800134111">Quick Config</strong> tab page, you can quickly configure parameters to <span id="mrs_01_0025__text17594122203913">create</span> Kafka streaming clusters within a few minutes, facilitating streaming data ingestion as well as real-time data processing and storage.</li><li id="mrs_01_0025__li59247116297"><a href="mrs_01_2354.html">Quick Creation of a ClickHouse Cluster</a>: You can quickly <span id="mrs_01_0025__text1546135554018">create</span> a ClickHouse cluster. ClickHouse is a columnar database management system used for online analysis. It features the ultimate compression rate and fast query performance.</li><li id="mrs_01_0025__li155099811517"><a href="mrs_01_2355.html">Quick Creation of a Real-time Analysis Cluster</a>: You can <span id="mrs_01_0025__text177910139413">create</span> a real-time analysis cluster within a few minutes to quickly collect, analyze, and query a large amount of data.</li><li id="mrs_01_0025__li1378611222405"><a href="mrs_01_0513.html">Creating a Custom Cluster</a>: On the <strong id="mrs_01_0025__b1322255742011">Custom Config</strong> tab page, you can flexibly configure parameters to <span id="mrs_01_0025__text16199141644114">create</span> clusters based on application scenarios, such as ECS specifications to better suit your service requirements.</li></ul> <ul id="mrs_01_0025__ul485919813916"><li id="mrs_01_0025__li1985910873918"><a href="mrs_01_0512.html">Quick Creation of a Hadoop Analysis Cluster</a>: On the <strong id="mrs_01_0025__b187601044346">Quick Config</strong> tab page, you can quickly configure parameters to <span id="mrs_01_0025__text13430181911386">create</span> Hadoop analysis clusters within a few minutes, facilitating analysis and queries of vast amounts of data.</li><li id="mrs_01_0025__li1226619519105"><a href="mrs_01_0496.html">Quick Creation of an HBase Analysis Cluster</a>: On the <strong id="mrs_01_0025__b1841135603911">Quick Config</strong> tab page, you can quickly configure parameters to <span id="mrs_01_0025__text13310159123819">create</span> HBase query clusters within a few minutes, facilitating storage and distributed computing of vast amounts of data.</li><li id="mrs_01_0025__li59247116297"><a href="mrs_01_2354.html">Quick Creation of a ClickHouse Cluster</a>: You can quickly <span id="mrs_01_0025__text1546135554018">create</span> a ClickHouse cluster. ClickHouse is a columnar database management system used for online analysis. It features the ultimate compression rate and fast query performance.</li><li id="mrs_01_0025__li155099811517"><a href="mrs_01_2355.html">Quick Creation of a Real-time Analysis Cluster</a>: You can <span id="mrs_01_0025__text177910139413">create</span> a real-time analysis cluster within a few minutes to quickly collect, analyze, and query a large amount of data.</li><li id="mrs_01_0025__li1378611222405"><a href="mrs_01_0513.html">Creating a Custom Cluster</a>: On the <strong id="mrs_01_0025__b1322255742011">Custom Config</strong> tab page, you can flexibly configure parameters to <span id="mrs_01_0025__text16199141644114">create</span> clusters based on application scenarios, such as ECS specifications to better suit your service requirements.</li></ul>
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<h1 class="topictitle1">Quick Creation of an HBase Analysis Cluster</h1> <h1 class="topictitle1">Quick Creation of an HBase Analysis Cluster</h1>
<div id="body1565257150273"><p id="mrs_01_0496__p497129202813">This section describes how to quickly <span id="mrs_01_0496__text13430181911386">create</span> an HBase query cluster. The HBase cluster uses Hadoop and HBase components to provide a column-oriented distributed cloud storage system featuring enhanced reliability, excellent performance, and elastic scalability. It applies to the storage and distributed computing of massive amounts of data. You can use HBase to build a storage system capable of storing TB- or even PB-level data. With HBase, you can filter and analyze data with ease and get responses in milliseconds, rapidly mining data value.</p> <div id="body1565257150273"><p id="mrs_01_0496__p497129202813">This section describes how to quickly <span id="mrs_01_0496__text13430181911386">create</span> an HBase query cluster. The HBase cluster uses Hadoop and HBase components to provide a column-oriented distributed cloud storage system featuring enhanced reliability, excellent performance, and elastic scalability. It applies to the storage and distributed computing of massive amounts of data. You can use HBase to build a storage system capable of storing TB- or even PB-level data. With HBase, you can filter and analyze data with ease and get responses in milliseconds, rapidly mining data value.</p>
<div class="section" id="mrs_01_0496__section1473417522031"><h4 class="sectiontitle">Quick Creation of an HBase Analysis Cluster</h4><ol id="mrs_01_0496__ol9221181084311"><li id="mrs_01_0496__li04523742211"><span>Log in to the MRS console.</span></li><li id="mrs_01_0496__li1447410714224"><span>Click <span class="parmvalue" id="mrs_01_0496__parmvalue111911521283"><b>Create Cluster</b></span>. The page for creating a cluster is displayed.</span></li><li id="mrs_01_0496__li18785535122717"><span>Click the <strong id="mrs_01_0496__b18291205515013">Quick Config</strong> tab.</span></li><li id="mrs_01_0496__li5491478220"><span>Configure basic cluster information. For details about the parameters, see <a href="mrs_01_0513.html">Creating a Custom Cluster</a>.</span><p><ul id="mrs_01_0496__ul516975743915"><li id="mrs_01_0496__li3169457133912"><strong id="mrs_01_0496__b1423611144319">Region</strong>: Use the default value.</li><li id="mrs_01_0496__li109321948154118"><strong id="mrs_01_0496__b36071325113014">Cluster Name</strong>: You can use the default name. However, you are advised to include a project name abbreviation or date for consolidated memory and easy distinguishing, for example, <strong id="mrs_01_0496__b648915191310">mrs_20180321</strong>.</li><li id="mrs_01_0496__li813669429"><strong id="mrs_01_0496__b194761359152518">Cluster Version</strong>: Select the latest version, which is the default value. (The components provided by a cluster vary according to the cluster version. Select a cluster version based on site requirements.)</li><li id="mrs_01_0496__li394315107422"><strong id="mrs_01_0496__b18506588312">Component</strong>: Select <strong id="mrs_01_0496__b105195811314">HBase Query Cluster</strong>.</li><li id="mrs_01_0496__li1542892513255"><strong id="mrs_01_0496__b174365219494115">AZ</strong>: Use the default value.</li><li id="mrs_01_0496__li8428182572513"><strong id="mrs_01_0496__b196701988894115">VPC</strong>: Use the default value. If there is no available VPC, click <strong id="mrs_01_0496__b126748972794115">View VPC</strong> to access the VPC console and create a new VPC.</li><li id="mrs_01_0496__li642832513258"><strong id="mrs_01_0496__b485211494115">Subnet</strong>: Use the default value.</li><li id="mrs_01_0496__li6428142514254"><strong id="mrs_01_0496__b147638830194115">Enterprise Project</strong>: Use the default value.</li><li id="mrs_01_0496__li721621618423"><strong id="mrs_01_0496__b148681113174017">Cluster Node</strong>: Select the number of cluster nodes and node specifications based on site requirements. For MRS 3.<em id="mrs_01_0496__i69732453314">x</em> or later, the memory of the master node must be greater than 64 GB.</li><li id="mrs_01_0496__li1251555218551"><strong id="mrs_01_0496__b188941524010">Cluster HA</strong>: Use the default value. This parameter is not available in MRS 3.<em id="mrs_01_0496__i177586121571">x</em>.</li><li id="mrs_01_0496__li1943755115020"><strong id="mrs_01_0496__b1624943111410">Kerberos Authentication</strong>: Select whether to enable Kerberos authentication.</li><li id="mrs_01_0496__li156367306543">MRS 3.1.2-LTS.3<ul id="mrs_01_0496__ul86361230145418"><li id="mrs_01_0496__li1663613045415"><strong id="mrs_01_0496__b1063515306542">Username</strong>: The default value is <strong id="mrs_01_0496__b17635153015541">root/admin</strong>. User <strong id="mrs_01_0496__b1263513015548">root</strong> is used to remotely log in to ECSs, and user <strong id="mrs_01_0496__b10636193015413">admin</strong> is used to access the cluster management page.</li><li id="mrs_01_0496__li763683018545"><strong id="mrs_01_0496__b2063653085416">Password</strong>: Set a password for user <strong id="mrs_01_0496__b8636830115418">root</strong>/<strong id="mrs_01_0496__b126369301543">admin</strong>.</li><li id="mrs_01_0496__li163613045413"><strong id="mrs_01_0496__b1963614301544">Confirm Password</strong>: Enter the password of user <strong id="mrs_01_0496__b16361730135419">root</strong>/<strong id="mrs_01_0496__b663603015543">admin</strong> again.</li></ul> <div class="section" id="mrs_01_0496__section1473417522031"><h4 class="sectiontitle">Quick Creation of an HBase Analysis Cluster</h4><ol id="mrs_01_0496__ol9221181084311"><li id="mrs_01_0496__li04523742211"><span>Log in to the MRS console.</span></li><li id="mrs_01_0496__li1447410714224"><span>Click <span class="parmvalue" id="mrs_01_0496__parmvalue111911521283"><b>Create Cluster</b></span>. The page for creating a cluster is displayed.</span></li><li id="mrs_01_0496__li18785535122717"><span>Click the <strong id="mrs_01_0496__b18291205515013">Quick Config</strong> tab.</span></li><li id="mrs_01_0496__li5491478220"><span>Configure basic cluster information. For details about the parameters, see <a href="mrs_01_0513.html">Creating a Custom Cluster</a>.</span><p><ul id="mrs_01_0496__ul516975743915"><li id="mrs_01_0496__li3169457133912"><strong id="mrs_01_0496__b1423611144319">Region</strong>: Use the default value.</li><li id="mrs_01_0496__li109321948154118"><strong id="mrs_01_0496__b36071325113014">Cluster Name</strong>: You can use the default name. However, you are advised to include a project name abbreviation or date for consolidated memory and easy distinguishing, for example, <strong id="mrs_01_0496__b648915191310">mrs_20180321</strong>.</li><li id="mrs_01_0496__li813669429"><strong id="mrs_01_0496__b194761359152518">Cluster Version</strong>: Select the latest version, which is the default value. (The components provided by a cluster vary according to the cluster version. Select a cluster version based on site requirements.)</li><li id="mrs_01_0496__li394315107422"><strong id="mrs_01_0496__b18506588312">Component</strong>: Select <strong id="mrs_01_0496__b105195811314">HBase Query Cluster</strong>.</li><li id="mrs_01_0496__li1542892513255"><strong id="mrs_01_0496__b174365219494115">AZ</strong>: Use the default value.</li><li id="mrs_01_0496__li8428182572513"><strong id="mrs_01_0496__b196701988894115">VPC</strong>: Use the default value. If there is no available VPC, click <strong id="mrs_01_0496__b126748972794115">View VPC</strong> to access the VPC console and create a new VPC.</li><li id="mrs_01_0496__li642832513258"><strong id="mrs_01_0496__b485211494115">Subnet</strong>: Use the default value.</li><li id="mrs_01_0496__li6428142514254"><strong id="mrs_01_0496__b147638830194115">Enterprise Project</strong>: Use the default value.</li><li id="mrs_01_0496__li721621618423"><strong id="mrs_01_0496__b148681113174017">Cluster Node</strong>: Select the number of cluster nodes and node specifications based on site requirements. For MRS 3.<em id="mrs_01_0496__i69732453314">x</em> or later, the memory of the master node must be greater than 64 GB.</li><li id="mrs_01_0496__li1251555218551"><strong id="mrs_01_0496__b188941524010">Cluster HA</strong>: Use the default value. This parameter is not available in MRS 3.<em id="mrs_01_0496__i177586121571">x</em>.</li><li id="mrs_01_0496__li1943755115020"><strong id="mrs_01_0496__b1624943111410">Kerberos Authentication</strong>: Select whether to enable Kerberos authentication.</li><li id="mrs_01_0496__li1663613045415"><strong id="mrs_01_0496__b1063515306542">Username</strong>: The default value is <strong id="mrs_01_0496__b17635153015541">root/admin</strong>. User <strong id="mrs_01_0496__b1263513015548">root</strong> is used to remotely log in to ECSs, and user <strong id="mrs_01_0496__b10636193015413">admin</strong> is used to access the cluster management page.</li><li id="mrs_01_0496__li763683018545"><strong id="mrs_01_0496__b2063653085416">Password</strong>: Set a password for user <strong id="mrs_01_0496__b8636830115418">root</strong>/<strong id="mrs_01_0496__b126369301543">admin</strong>.</li><li id="mrs_01_0496__li163613045413"><strong id="mrs_01_0496__b1963614301544">Confirm Password</strong>: Enter the password of user <strong id="mrs_01_0496__b16361730135419">root</strong>/<strong id="mrs_01_0496__b663603015543">admin</strong> again.</li></ul>
</li><li id="mrs_01_0496__li54966116559">Versions earlier than MRS 3.1.2-LTS.3<ul id="mrs_01_0496__ul1294651511550"><li id="mrs_01_0496__li16735736165214"><strong id="mrs_01_0496__b19576231191310">Username</strong>: The default username is <strong id="mrs_01_0496__b2576031101312">admin</strong>, which is used to log in to MRS Manager.</li><li id="mrs_01_0496__li1073513611525"><strong id="mrs_01_0496__b1522914339137">Password</strong>: Set a password for user <strong id="mrs_01_0496__b923014332132">admin</strong>.</li><li id="mrs_01_0496__li1373593613528"><strong id="mrs_01_0496__b11490834191318">Confirm Password</strong>: Enter the password of user <strong id="mrs_01_0496__b1949011341132">admin</strong> again.</li><li id="mrs_01_0496__li1721005012177"><strong id="mrs_01_0496__b10699163541319">Key Pair</strong>: Select a key pair from the drop-down list to log in to an ECS. Select <strong id="mrs_01_0496__b1769919358135">"I acknowledge that I have obtained private key file </strong><i><span class="varname" id="mrs_01_0496__varname370023513132">SSHkey-xxx</span></i><strong id="mrs_01_0496__b970018354135"> and that without this file I will not be able to log in to my ECS.</strong>" If you have never created a key pair, click <span class="uicontrol" id="mrs_01_0496__uicontrol164489101413"><b>View Key Pair</b></span> to create or import a key pair. And then, obtain a private key file.</li></ul>
</li></ul>
</p></li><li id="mrs_01_0496__li196444596283"><span>Select <strong id="mrs_01_0496__b1583111113217">Enable</strong> to enable secure communications. For details, see <a href="mrs_01_0786.html">Communication Security Authorization</a>.</span></li><li id="mrs_01_0496__li1343152735714"><span><span class="uicontrol" id="mrs_01_0496__uicontrol109677296150"><b>Click Create Now.</b></span></span><p><p id="mrs_01_0496__p72082324387">If Kerberos authentication is enabled for a cluster, check whether Kerberos authentication is required. If yes, click <strong id="mrs_01_0496__b121271634413">Continue</strong>. If no, click <strong id="mrs_01_0496__b141280318413">Back</strong> to disable Kerberos authentication and then create a cluster.</p> </p></li><li id="mrs_01_0496__li196444596283"><span>Select <strong id="mrs_01_0496__b1583111113217">Enable</strong> to enable secure communications. For details, see <a href="mrs_01_0786.html">Communication Security Authorization</a>.</span></li><li id="mrs_01_0496__li1343152735714"><span><span class="uicontrol" id="mrs_01_0496__uicontrol109677296150"><b>Click Create Now.</b></span></span><p><p id="mrs_01_0496__p72082324387">If Kerberos authentication is enabled for a cluster, check whether Kerberos authentication is required. If yes, click <strong id="mrs_01_0496__b121271634413">Continue</strong>. If no, click <strong id="mrs_01_0496__b141280318413">Back</strong> to disable Kerberos authentication and then create a cluster.</p>
</p></li><li id="mrs_01_0496__li1591417431483"><span>Click <strong id="mrs_01_0496__b164482474011">Back to Cluster List</strong> to view the cluster status. Click<strong id="mrs_01_0496__b7629925164019"> Access Cluster</strong> to view cluster details.</span><p><p id="mrs_01_0496__p17991813181220">For details about cluster status during creation, see the description of the status parameters in <a href="en-us_topic_0012808230.html#en-us_topic_0012808230__table3950169215120">Table 1</a>.</p> </p></li><li id="mrs_01_0496__li1591417431483"><span>Click <strong id="mrs_01_0496__b164482474011">Back to Cluster List</strong> to view the cluster status. Click<strong id="mrs_01_0496__b7629925164019"> Access Cluster</strong> to view cluster details.</span><p><p id="mrs_01_0496__p17991813181220">For details about cluster status during creation, see the description of the status parameters in <a href="en-us_topic_0012808230.html#en-us_topic_0012808230__table3950169215120">Table 1</a>.</p>
<p id="mrs_01_0496__p1799191310124">It takes some time to create a cluster. The initial status of the cluster is <strong id="mrs_01_0496__b17657102816404">Starting</strong>. After the cluster has been created successfully, the cluster status becomes <strong id="mrs_01_0496__b146581028174016">Running</strong>.</p> <p id="mrs_01_0496__p1799191310124">It takes some time to create a cluster. The initial status of the cluster is <strong id="mrs_01_0496__b17657102816404">Starting</strong>. After the cluster has been created successfully, the cluster status becomes <strong id="mrs_01_0496__b146581028174016">Running</strong>.</p>

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<h1 class="topictitle1">Quick Creation of a Hadoop Analysis Cluster</h1> <h1 class="topictitle1">Quick Creation of a Hadoop Analysis Cluster</h1>
<div id="body1559697924758"><p id="mrs_01_0512__p24432814485">This section describes how to quickly <span id="mrs_01_0512__text13430181911386">create</span> a Hadoop analysis cluster for analyzing and querying vast amounts of data. In the open-source Hadoop ecosystem, Hadoop uses Yarn to manage cluster resources, Hive and Spark to provide offline storage and computing of large-scale distributed data, Spark Streaming and Flink to offer streaming data computing, and Presto to enable interactive queries, Tez to provide a distributed computing framework of directed acyclic graphs (DAGs).</p> <div id="body1559697924758"><p id="mrs_01_0512__p24432814485">This section describes how to quickly <span id="mrs_01_0512__text13430181911386">create</span> a Hadoop analysis cluster for analyzing and querying vast amounts of data. In the open-source Hadoop ecosystem, Hadoop uses Yarn to manage cluster resources, Hive and Spark to provide offline storage and computing of large-scale distributed data, Spark Streaming and Flink to offer streaming data computing, and Presto to enable interactive queries, Tez to provide a distributed computing framework of directed acyclic graphs (DAGs).</p>
<div class="section" id="mrs_01_0512__section9760510114211"><h4 class="sectiontitle">Quick Creation of a Hadoop Analysis Cluster</h4><ol id="mrs_01_0512__ol9221181084311"><li id="mrs_01_0512__li04523742211"><span>Log in to the MRS console.</span></li><li id="mrs_01_0512__li1447410714224"><span>Click <span class="parmvalue" id="mrs_01_0512__parmvalue143451719734"><b>Create Cluster</b></span>. The page for creating a cluster is displayed.</span></li><li id="mrs_01_0512__li18785535122717"><span>Click the <strong id="mrs_01_0512__b9468337185920">Quick Config</strong> tab.</span></li><li id="mrs_01_0512__li5491478220"><span>Configure basic cluster information. For details about the parameters, see <a href="mrs_01_0513.html">Creating a Custom Cluster</a>.</span><p><ul id="mrs_01_0512__ul516975743915"><li id="mrs_01_0512__li3169457133912"><strong id="mrs_01_0512__b1660372402011">Region</strong>: Use the default value.</li><li id="mrs_01_0512__li109321948154118"><strong id="mrs_01_0512__b8373829219">Cluster Name</strong>: You can use the default name. However, you are advised to include a project name abbreviation or date for consolidated memory and easy distinguishing, for example, <strong id="mrs_01_0512__b73184014220">mrs_20180321</strong>.</li><li id="mrs_01_0512__li813669429"><strong id="mrs_01_0512__b66591311427">Cluster Version</strong>: Select the latest version, which is the default value. (The components provided by a cluster vary according to the cluster version. Select a cluster version based on site requirements.)</li><li id="mrs_01_0512__li394315107422"><strong id="mrs_01_0512__b99127120419">Component</strong>: Select <strong id="mrs_01_0512__b557615251342">Hadoop analysis cluster</strong>.</li><li id="mrs_01_0512__li1542892513255"><strong id="mrs_01_0512__b882543418389">AZ</strong>: Use the default value.</li><li id="mrs_01_0512__li8428182572513"><strong id="mrs_01_0512__b468273812380">VPC</strong>: Use the default value. If there is no available VPC, click <strong id="mrs_01_0512__b748334015385">View VPC</strong> to access the VPC console and create a new VPC.</li><li id="mrs_01_0512__li642832513258"><strong id="mrs_01_0512__b3541442153812">Subnet</strong>: Use the default value.</li><li id="mrs_01_0512__li6428142514254"><strong id="mrs_01_0512__b754711434380">Enterprise Project</strong>: Use the default value.</li><li id="mrs_01_0512__li721621618423"><strong id="mrs_01_0512__b744516129329">Cluster Node</strong>: Select the number of cluster nodes and node specifications based on site requirements. For MRS 3.<em id="mrs_01_0512__i5485751141314">x</em> or later, the memory of the master node must be greater than 64 GB.</li><li id="mrs_01_0512__li1251555218551"><strong id="mrs_01_0512__b53961851752">Cluster HA</strong>: Use the default value. This parameter is not available in MRS 3.<em id="mrs_01_0512__i483713411067">x</em>.</li><li id="mrs_01_0512__li1943755115020"><strong id="mrs_01_0512__b194075819412">Kerberos Authentication</strong>: Select whether to enable Kerberos authentication.</li><li id="mrs_01_0512__li156367306543">MRS 3.1.2-LTS.3<ul id="mrs_01_0512__ul86361230145418"><li id="mrs_01_0512__li1663613045415"><strong id="mrs_01_0512__b1063515306542">Username</strong>: The default value is <strong id="mrs_01_0512__b17635153015541">root/admin</strong>. User <strong id="mrs_01_0512__b1263513015548">root</strong> is used to remotely log in to ECSs, and user <strong id="mrs_01_0512__b10636193015413">admin</strong> is used to access the cluster management page.</li><li id="mrs_01_0512__li763683018545"><strong id="mrs_01_0512__b2063653085416">Password</strong>: Set a password for user <strong id="mrs_01_0512__b8636830115418">root</strong>/<strong id="mrs_01_0512__b126369301543">admin</strong>.</li><li id="mrs_01_0512__li163613045413"><strong id="mrs_01_0512__b1963614301544">Confirm Password</strong>: Enter the password of user <strong id="mrs_01_0512__b16361730135419">root</strong>/<strong id="mrs_01_0512__b663603015543">admin</strong> again.</li></ul> <div class="section" id="mrs_01_0512__section9760510114211"><h4 class="sectiontitle">Quick Creation of a Hadoop Analysis Cluster</h4><ol id="mrs_01_0512__ol9221181084311"><li id="mrs_01_0512__li04523742211"><span>Log in to the MRS console.</span></li><li id="mrs_01_0512__li1447410714224"><span>Click <span class="parmvalue" id="mrs_01_0512__parmvalue143451719734"><b>Create Cluster</b></span>. The page for creating a cluster is displayed.</span></li><li id="mrs_01_0512__li18785535122717"><span>Click the <strong id="mrs_01_0512__b9468337185920">Quick Config</strong> tab.</span></li><li id="mrs_01_0512__li5491478220"><span>Configure basic cluster information. For details about the parameters, see <a href="mrs_01_0513.html">Creating a Custom Cluster</a>.</span><p><ul id="mrs_01_0512__ul516975743915"><li id="mrs_01_0512__li3169457133912"><strong id="mrs_01_0512__b1660372402011">Region</strong>: Use the default value.</li><li id="mrs_01_0512__li109321948154118"><strong id="mrs_01_0512__b8373829219">Cluster Name</strong>: You can use the default name. However, you are advised to include a project name abbreviation or date for consolidated memory and easy distinguishing, for example, <strong id="mrs_01_0512__b73184014220">mrs_20180321</strong>.</li><li id="mrs_01_0512__li813669429"><strong id="mrs_01_0512__b66591311427">Cluster Version</strong>: Select the latest version, which is the default value. (The components provided by a cluster vary according to the cluster version. Select a cluster version based on site requirements.)</li><li id="mrs_01_0512__li394315107422"><strong id="mrs_01_0512__b99127120419">Component</strong>: Select <strong id="mrs_01_0512__b557615251342">Hadoop analysis cluster</strong>.</li><li id="mrs_01_0512__li1542892513255"><strong id="mrs_01_0512__b882543418389">AZ</strong>: Use the default value.</li><li id="mrs_01_0512__li8428182572513"><strong id="mrs_01_0512__b468273812380">VPC</strong>: Use the default value. If there is no available VPC, click <strong id="mrs_01_0512__b748334015385">View VPC</strong> to access the VPC console and create a new VPC.</li><li id="mrs_01_0512__li642832513258"><strong id="mrs_01_0512__b3541442153812">Subnet</strong>: Use the default value.</li><li id="mrs_01_0512__li6428142514254"><strong id="mrs_01_0512__b754711434380">Enterprise Project</strong>: Use the default value.</li><li id="mrs_01_0512__li721621618423"><strong id="mrs_01_0512__b744516129329">Cluster Node</strong>: Select the number of cluster nodes and node specifications based on site requirements. For MRS 3.<em id="mrs_01_0512__i5485751141314">x</em> or later, the memory of the master node must be greater than 64 GB.</li><li id="mrs_01_0512__li1251555218551"><strong id="mrs_01_0512__b53961851752">Cluster HA</strong>: Use the default value. This parameter is not available in MRS 3.<em id="mrs_01_0512__i483713411067">x</em>.</li><li id="mrs_01_0512__li1943755115020"><strong id="mrs_01_0512__b194075819412">Kerberos Authentication</strong>: Select whether to enable Kerberos authentication.</li><li id="mrs_01_0512__li1663613045415"><strong id="mrs_01_0512__b1063515306542">Username</strong>: The default value is <strong id="mrs_01_0512__b17635153015541">root/admin</strong>. User <strong id="mrs_01_0512__b1263513015548">root</strong> is used to remotely log in to ECSs, and user <strong id="mrs_01_0512__b10636193015413">admin</strong> is used to access the cluster management page.</li><li id="mrs_01_0512__li763683018545"><strong id="mrs_01_0512__b2063653085416">Password</strong>: Set a password for user <strong id="mrs_01_0512__b8636830115418">root</strong>/<strong id="mrs_01_0512__b126369301543">admin</strong>.</li><li id="mrs_01_0512__li163613045413"><strong id="mrs_01_0512__b1963614301544">Confirm Password</strong>: Enter the password of user <strong id="mrs_01_0512__b16361730135419">root</strong>/<strong id="mrs_01_0512__b663603015543">admin</strong> again.</li></ul>
</li><li id="mrs_01_0512__li54966116559">Versions earlier than MRS 3.1.2-LTS.3<ul id="mrs_01_0512__ul1294651511550"><li id="mrs_01_0512__li16735736165214"><strong id="mrs_01_0512__b19576231191310">Username</strong>: The default username is <strong id="mrs_01_0512__b2576031101312">admin</strong>, which is used to log in to MRS Manager.</li><li id="mrs_01_0512__li1073513611525"><strong id="mrs_01_0512__b1522914339137">Password</strong>: Set a password for user <strong id="mrs_01_0512__b923014332132">admin</strong>.</li><li id="mrs_01_0512__li1373593613528"><strong id="mrs_01_0512__b11490834191318">Confirm Password</strong>: Enter the password of user <strong id="mrs_01_0512__b1949011341132">admin</strong> again.</li><li id="mrs_01_0512__li1721005012177"><strong id="mrs_01_0512__b10699163541319">Key Pair</strong>: Select a key pair from the drop-down list to log in to an ECS. Select <strong id="mrs_01_0512__b1769919358135">"I acknowledge that I have obtained private key file </strong><i><span class="varname" id="mrs_01_0512__varname370023513132">SSHkey-xxx</span></i><strong id="mrs_01_0512__b970018354135"> and that without this file I will not be able to log in to my ECS.</strong>" If you have never created a key pair, click <span class="uicontrol" id="mrs_01_0512__uicontrol164489101413"><b>View Key Pair</b></span> to create or import a key pair. And then, obtain a private key file.</li></ul>
</li></ul>
</p></li><li id="mrs_01_0512__li196444596283"><span>Select <strong id="mrs_01_0512__b181512151101">Enable</strong> to enable secure communications. For details, see <a href="mrs_01_0786.html">Communication Security Authorization</a>.</span></li><li id="mrs_01_0512__li1343152735714"><span><span class="uicontrol" id="mrs_01_0512__uicontrol109677296150"><b>Click Create Now.</b></span></span><p><p id="mrs_01_0512__p72082324387">If Kerberos authentication is enabled for a cluster, check whether Kerberos authentication is required. If yes, click <strong id="mrs_01_0512__b52256982301423">Continue</strong>. If no, click <strong id="mrs_01_0512__b134378817401423">Back</strong> to disable Kerberos authentication and then create a cluster.</p> </p></li><li id="mrs_01_0512__li196444596283"><span>Select <strong id="mrs_01_0512__b181512151101">Enable</strong> to enable secure communications. For details, see <a href="mrs_01_0786.html">Communication Security Authorization</a>.</span></li><li id="mrs_01_0512__li1343152735714"><span><span class="uicontrol" id="mrs_01_0512__uicontrol109677296150"><b>Click Create Now.</b></span></span><p><p id="mrs_01_0512__p72082324387">If Kerberos authentication is enabled for a cluster, check whether Kerberos authentication is required. If yes, click <strong id="mrs_01_0512__b52256982301423">Continue</strong>. If no, click <strong id="mrs_01_0512__b134378817401423">Back</strong> to disable Kerberos authentication and then create a cluster.</p>
</p></li><li id="mrs_01_0512__li1591417431483"><span>Click <strong id="mrs_01_0512__b6600144682919">Back to Cluster List</strong> to view the cluster status. Click<strong id="mrs_01_0512__b04511440172916"> Access Cluster</strong> to view cluster details.</span><p><p id="mrs_01_0512__p17991813181220">For details about cluster status during creation, see the description of the status parameters in <a href="en-us_topic_0012808230.html#en-us_topic_0012808230__table3950169215120">Table 1</a>.</p> </p></li><li id="mrs_01_0512__li1591417431483"><span>Click <strong id="mrs_01_0512__b6600144682919">Back to Cluster List</strong> to view the cluster status. Click<strong id="mrs_01_0512__b04511440172916"> Access Cluster</strong> to view cluster details.</span><p><p id="mrs_01_0512__p17991813181220">For details about cluster status during creation, see the description of the status parameters in <a href="en-us_topic_0012808230.html#en-us_topic_0012808230__table3950169215120">Table 1</a>.</p>
<p id="mrs_01_0512__p1799191310124">It takes some time to create a cluster. The initial status of the cluster is <strong id="mrs_01_0512__b18424192710293">Starting</strong>. After the cluster has been created successfully, the cluster status becomes <strong id="mrs_01_0512__b5427112782916">Running</strong>.</p> <p id="mrs_01_0512__p1799191310124">It takes some time to create a cluster. The initial status of the cluster is <strong id="mrs_01_0512__b18424192710293">Starting</strong>. After the cluster has been created successfully, the cluster status becomes <strong id="mrs_01_0512__b5427112782916">Running</strong>.</p>

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</tr> </tr>
<tr id="mrs_01_0513__row178019237579"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.4.2.2.3.1.1 "><p id="mrs_01_0513__p2065916742212">Cluster Version</p> <tr id="mrs_01_0513__row178019237579"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.4.2.2.3.1.1 "><p id="mrs_01_0513__p2065916742212">Cluster Version</p>
</td> </td>
<td class="cellrowborder" valign="top" width="70%" headers="mcps1.3.4.2.2.3.1.2 "><p id="mrs_01_0513__p11302191119226">Currently, MRS 3.1.2-LTS.x , and 3.2.0-LTS.x are supported. The default value displayed on the UI varies depending on the version.</p> <td class="cellrowborder" valign="top" width="70%" headers="mcps1.3.4.2.2.3.1.2 "><p id="mrs_01_0513__p11302191119226">Currently, MRS 3.1.2-LTS.6 , and 3.2.0-LTS.2 are supported. The default value displayed on the UI varies depending on the version.</p>
</td> </td>
</tr> </tr>
<tr id="mrs_01_0513__row3780823165720"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.4.2.2.3.1.1 "><p id="mrs_01_0513__p197518710224">Cluster Type</p> <tr id="mrs_01_0513__row3780823165720"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.4.2.2.3.1.1 "><p id="mrs_01_0513__p197518710224">Cluster Type</p>
</td> </td>
<td class="cellrowborder" valign="top" width="70%" headers="mcps1.3.4.2.2.3.1.2 "><div class="p" id="mrs_01_0513__p2978676228">The cluster types are as follows:<ul id="mrs_01_0513__ul6981207172215"><li id="mrs_01_0513__li09831579227"><strong id="mrs_01_0513__b438421415114">Analysis cluster</strong>: is used for offline data analysis and provides Hadoop components.</li><li id="mrs_01_0513__li129892719221"><strong id="mrs_01_0513__b9519472019">Streaming cluster</strong>: is used for streaming tasks and provides stream processing components.</li><li id="mrs_01_0513__li14421115332919"><strong id="mrs_01_0513__b12462142310014">Hybrid cluster</strong>: is used for both offline data analysis and streaming processing and provides Hadoop components and streaming processing components. You are advised to use a hybrid cluster to perform offline data analysis and streaming processing tasks at the same time.</li><li id="mrs_01_0513__li203010814186"><strong id="mrs_01_0513__b1435135911312">Custom</strong>: You can adjust the cluster service deployment mode based on service requirements. For details, see <a href="mrs_01_0121.html">Creating a Custom Topology Cluster</a>. (This type is currently available only in MRS 3.<em id="mrs_01_0513__i8411135183212">x</em>.)</li></ul> <td class="cellrowborder" valign="top" width="70%" headers="mcps1.3.4.2.2.3.1.2 "><div class="p" id="mrs_01_0513__p2978676228">The cluster types are as follows:<ul id="mrs_01_0513__ul6981207172215"><li id="mrs_01_0513__li09831579227"><strong id="mrs_01_0513__b438421415114">Analysis cluster</strong>: is used for offline data analysis and provides Hadoop components.</li><li id="mrs_01_0513__li129892719221"><strong id="mrs_01_0513__b9519472019">Streaming cluster</strong>: is used for streaming tasks and provides stream processing components.</li><li id="mrs_01_0513__li14421115332919"><strong id="mrs_01_0513__b12462142310014">Hybrid cluster</strong>: is used for both offline data analysis and streaming processing and provides Hadoop components and streaming processing components. You are advised to use a hybrid cluster to perform offline data analysis and streaming processing tasks at the same time.</li><li id="mrs_01_0513__li203010814186"><strong id="mrs_01_0513__b1435135911312">Custom</strong>: You can adjust the cluster service deployment mode based on service requirements. For details, see <a href="mrs_01_0121.html">Creating a Custom Topology Cluster</a>. </li></ul>
</div> </div>
<div class="note" id="mrs_01_0513__note3116811229"><span class="notetitle"> NOTE: </span><div class="notebody"><ul id="mrs_01_0513__ul186112507468"><li id="mrs_01_0513__li1261195020464">MRS streaming clusters do not support job and file management functions.</li><li id="mrs_01_0513__li453865214610">To install all components in a cluster, select <strong id="mrs_01_0513__b796263323412">Custom</strong>.</li></ul> <div class="note" id="mrs_01_0513__note3116811229"><span class="notetitle"> NOTE: </span><div class="notebody"><ul id="mrs_01_0513__ul186112507468"><li id="mrs_01_0513__li1261195020464">MRS streaming clusters do not support job and file management functions.</li><li id="mrs_01_0513__li453865214610">To install all components in a cluster, select <strong id="mrs_01_0513__b796263323412">Custom</strong>.</li></ul>
</div></div> </div></div>
@ -48,10 +48,9 @@
<tr id="mrs_01_0513__row19962132916585"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.4.2.2.3.1.1 "><p id="mrs_01_0513__p18240812214">Components</p> <tr id="mrs_01_0513__row19962132916585"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.4.2.2.3.1.1 "><p id="mrs_01_0513__p18240812214">Components</p>
</td> </td>
<td class="cellrowborder" valign="top" width="70%" headers="mcps1.3.4.2.2.3.1.2 "><p id="mrs_01_0513__p530128172211">MRS components are as follows..</p> <td class="cellrowborder" valign="top" width="70%" headers="mcps1.3.4.2.2.3.1.2 "><p id="mrs_01_0513__p530128172211">MRS components are as follows..</p>
<div class="p" id="mrs_01_0513__p17754193712915"><strong id="mrs_01_0513__b829283419240">Components of an analysis cluster:</strong><ul id="mrs_01_0513__ul107601137694"><li id="mrs_01_0513__li75640461678">Presto: open source and distributed SQL query engine</li><li id="mrs_01_0513__li15767153712918">Hadoop: distributed system architecture</li><li id="mrs_01_0513__li207825375917">Spark: in-memory distributed computing framework (not supported in MRS 3.<em id="mrs_01_0513__i1729612461149">x</em>)</li><li id="mrs_01_0513__li318134365912">Spark2x: A fast general-purpose engine for large-scale data processing. It is developed based on the open-source Spark2.x version. (supported only in MRS 3.<em id="mrs_01_0513__i47279574141">x</em>)</li><li id="mrs_01_0513__li97921537897">Hive: data warehouse framework built on Hadoop</li><li id="mrs_01_0513__li867554913713">OpenTSDB: a distributed, scalable time series database that can store and serve massive amounts of time series data without losing granularity (not supported in MRS 3.<em id="mrs_01_0513__i149215591512">x</em>)</li><li id="mrs_01_0513__li980719376917">HBase: distributed column-oriented database</li><li id="mrs_01_0513__li197331741151114">Tez: an application framework which allows for a complex directed-acyclic-graph of tasks for processing data</li><li id="mrs_01_0513__li98261137193">Hue: provides the Hadoop UI capability, which enables users to analyze and process Hadoop cluster data on browsers</li><li id="mrs_01_0513__li188416371293">Loader: a tool based on source Sqoop 1.99.7, designed for efficiently transferring bulk data between Apache Hadoop and structured datastores such as relational databases (not supported in MRS 3.<em id="mrs_01_0513__i268422653319">x</em>)<p id="mrs_01_0513__p148558372910">Hadoop is mandatory, and Spark and Hive must be used together. Select components based on service requirements.</p> <div class="p" id="mrs_01_0513__p17754193712915"><strong id="mrs_01_0513__b829283419240">Components of an analysis cluster:</strong><ul id="mrs_01_0513__ul107601137694"><li id="mrs_01_0513__li75640461678">Presto: open source and distributed SQL query engine</li><li id="mrs_01_0513__li15767153712918">Hadoop: distributed system architecture</li><li id="mrs_01_0513__li318134365912">Spark2x: A fast general-purpose engine for large-scale data processing. It is developed based on the open-source Spark2.x version. </li><li id="mrs_01_0513__li97921537897">Hive: data warehouse framework built on Hadoop</li><li id="mrs_01_0513__li980719376917">HBase: distributed column-oriented database</li><li id="mrs_01_0513__li197331741151114">Tez: an application framework which allows for a complex directed-acyclic-graph of tasks for processing data</li><li id="mrs_01_0513__li98261137193">Hue: provides the Hadoop UI capability, which enables users to analyze and process Hadoop cluster data on browsers</li><li id="mrs_01_0513__li1081715193814">Flink: a distributed big data processing engine that can perform stateful computations over both finite and infinite data streams</li><li id="mrs_01_0513__li92521573218">Oozie: a Hadoop job scheduling system </li><li id="mrs_01_0513__li1069011311211"><span id="mrs_01_0513__text1412710149374">HetuEngine</span>: a distributed SQL query engine for heterogeneous big data sets </li><li id="mrs_01_0513__li131873481306">Ranger: a framework to enable, monitor, and manage data security across the Hadoop platform</li><li id="mrs_01_0513__li513413011158">ClickHouse: A column database management system (DBMS) for on-line analytical processing (OLAP). The ClickHouse cluster table engine that uses Kunpeng as the CPU architecture does not support HDFS and Kafka.</li><li id="mrs_01_0513__li1123014575416">Kudu: a column-oriented data store</li></ul>
</li><li id="mrs_01_0513__li1081715193814">Flink: a distributed big data processing engine that can perform stateful computations over both finite and infinite data streams</li><li id="mrs_01_0513__li92521573218">Oozie: a Hadoop job scheduling system (supported only in MRS 3.<em id="mrs_01_0513__i644802281515">x</em>)</li><li id="mrs_01_0513__li1069011311211"><span id="mrs_01_0513__text1412710149374">HetuEngine</span>: a distributed SQL query engine for heterogeneous big data sets (supported only in MRS 3.1.<em id="mrs_01_0513__i17466195419258">x</em>-LTS)</li><li id="mrs_01_0513__li213396192714">Alluxio: a memory speed virtual distributed storage system </li><li id="mrs_01_0513__li131873481306">Ranger: a framework to enable, monitor, and manage data security across the Hadoop platform</li><li id="mrs_01_0513__li513413011158">ClickHouse: A column database management system (DBMS) for on-line analytical processing (OLAP). The ClickHouse cluster table engine that uses Kunpeng as the CPU architecture does not support HDFS and Kafka.</li><li id="mrs_01_0513__li1123014575416">Kudu: a column-oriented data store</li></ul>
</div> </div>
<div class="p" id="mrs_01_0513__p128580371792"><strong id="mrs_01_0513__b11477141373811">Components of a streaming cluster:</strong><ul id="mrs_01_0513__ul1586213370918"><li id="mrs_01_0513__li486713715919">Kafka: distributed messaging system</li><li id="mrs_01_0513__li107003228278">KafkaManager: Kafka cluster monitoring management tool (not supported in MRS 3.<em id="mrs_01_0513__i8923155075020">x</em>)</li><li id="mrs_01_0513__li208903375919">Flume: distributed, reliable, and available service for efficiently collecting, aggregating, and moving large amounts of log data</li><li id="mrs_01_0513__li176551318205115">ZooKeeper: a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services (supported only in MRS 3.<em id="mrs_01_0513__i1505089997">x</em>)</li><li id="mrs_01_0513__li312574155114">Ranger: a framework to enable, monitor, and manage data security across the Hadoop platform (supported only in MRS 3.<em id="mrs_01_0513__i227812251">x</em>)</li></ul> <div class="p" id="mrs_01_0513__p128580371792"><strong id="mrs_01_0513__b11477141373811">Components of a streaming cluster:</strong><ul id="mrs_01_0513__ul1586213370918"><li id="mrs_01_0513__li486713715919">Kafka: distributed messaging system</li><li id="mrs_01_0513__li208903375919">Flume: distributed, reliable, and available service for efficiently collecting, aggregating, and moving large amounts of log data</li><li id="mrs_01_0513__li176551318205115">ZooKeeper: a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services </li><li id="mrs_01_0513__li312574155114">Ranger: a framework to enable, monitor, and manage data security across the Hadoop platform </li></ul>
</div> </div>
</td> </td>
</tr> </tr>
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<tr id="mrs_01_0513__row118071852124914"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.5.3.2.3.1.1 "><p id="mrs_01_0513__p14807125213494">Instance Specifications</p> <tr id="mrs_01_0513__row118071852124914"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.5.3.2.3.1.1 "><p id="mrs_01_0513__p14807125213494">Instance Specifications</p>
</td> </td>
<td class="cellrowborder" valign="top" width="70%" headers="mcps1.3.5.3.2.3.1.2 "><p id="mrs_01_0513__p89434514180">Instance specifications of Master or Core nodes. MRS supports host specifications determined by CPU, memory, and disk space. Click <span><img id="mrs_01_0513__image8689817103517" src="en-us_image_0000001296057872.png"></span> to configure the instance specifications, system disk, and data disk parameters of the cluster node.</p> <td class="cellrowborder" valign="top" width="70%" headers="mcps1.3.5.3.2.3.1.2 "><p id="mrs_01_0513__p89434514180">Instance specifications of Master or Core nodes. MRS supports host specifications determined by CPU, memory, and disk space. Click <span><img id="mrs_01_0513__image8689817103517" src="en-us_image_0000001296057872.png"></span> to configure the instance specifications, system disk, and data disk parameters of the cluster node.</p>
<div class="note" id="mrs_01_0513__note1648939122217"><span class="notetitle"> NOTE: </span><div class="notebody"><ul id="mrs_01_0513__en-us_topic_0173525262_ul16495199172216"><li id="mrs_01_0513__en-us_topic_0173525262_li1849713992214">More advanced instance specifications provide better data processing.</li><li id="mrs_01_0513__en-us_topic_0173525262_li953016919222">If you select non-HDD disks for Core nodes, the disk types of Master and Core nodes are determined by <strong id="mrs_01_0513__b8423527061752">Data Disk</strong>.</li><li id="mrs_01_0513__li1495133414319">For MRS 3.<em id="mrs_01_0513__i754914625017">x</em> or later, the memory of the master node must be greater than 64 GB.</li></ul> <div class="note" id="mrs_01_0513__note1648939122217"><span class="notetitle"> NOTE: </span><div class="notebody"><ul id="mrs_01_0513__en-us_topic_0173525262_ul16495199172216"><li id="mrs_01_0513__en-us_topic_0173525262_li1849713992214">More advanced instance specifications provide better data processing.</li><li id="mrs_01_0513__en-us_topic_0173525262_li953016919222">If you select non-HDD disks for Core nodes, the disk types of Master and Core nodes are determined by <strong id="mrs_01_0513__b8423527061752">Data Disk</strong>.</li><li id="mrs_01_0513__li1495133414319"><span id="mrs_01_0513__ph6871182522414">T</span>he memory of the master node must be greater than 64 GB.</li></ul>
</div></div> </div></div>
</td> </td>
</tr> </tr>
@ -241,7 +240,6 @@
<tr id="mrs_01_0513__row529111385611"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.6.2.2.3.1.1 "><p id="mrs_01_0513__p14487951463">Username</p> <tr id="mrs_01_0513__row529111385611"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.6.2.2.3.1.1 "><p id="mrs_01_0513__p14487951463">Username</p>
</td> </td>
<td class="cellrowborder" valign="top" width="70%" headers="mcps1.3.6.2.2.3.1.2 "><p id="mrs_01_0513__p194873511269">Name of the administrator of Manager. <strong id="mrs_01_0513__b87848231059">admin</strong> is used by default.</p> <td class="cellrowborder" valign="top" width="70%" headers="mcps1.3.6.2.2.3.1.2 "><p id="mrs_01_0513__p194873511269">Name of the administrator of Manager. <strong id="mrs_01_0513__b87848231059">admin</strong> is used by default.</p>
<p id="mrs_01_0513__p1848718512611">For versions earlier than MRS 1.7.2, this parameter needs to be configured only when <span class="parmname" id="mrs_01_0513__parmname1162911271154"><b>Kerberos Authentication</b></span> is enabled: <span><img id="mrs_01_0513__image448816516620" src="en-us_image_0000001349057889.png"></span></p>
</td> </td>
</tr> </tr>
<tr id="mrs_01_0513__row1329183813617"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.6.2.2.3.1.1 "><p id="mrs_01_0513__p348810511161">Password</p> <tr id="mrs_01_0513__row1329183813617"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.6.2.2.3.1.1 "><p id="mrs_01_0513__p348810511161">Password</p>
@ -251,13 +249,11 @@
<ul id="mrs_01_0513__ul8488155119617"><li id="mrs_01_0513__li114881651963">Must contain 8 to 26 characters.</li><li id="mrs_01_0513__li848819511565">Must contain at least four of the following:<ul id="mrs_01_0513__ul134884512061"><li id="mrs_01_0513__li1248820511268">Lowercase letters</li><li id="mrs_01_0513__li3488165115615">Uppercase letters</li><li id="mrs_01_0513__li154896519611">Digits</li><li id="mrs_01_0513__li24892511165">Have at least one of the following special characters: !?,.: -_{} [ ]@ $% ^ + = /</li></ul> <ul id="mrs_01_0513__ul8488155119617"><li id="mrs_01_0513__li114881651963">Must contain 8 to 26 characters.</li><li id="mrs_01_0513__li848819511565">Must contain at least four of the following:<ul id="mrs_01_0513__ul134884512061"><li id="mrs_01_0513__li1248820511268">Lowercase letters</li><li id="mrs_01_0513__li3488165115615">Uppercase letters</li><li id="mrs_01_0513__li154896519611">Digits</li><li id="mrs_01_0513__li24892511165">Have at least one of the following special characters: !?,.: -_{} [ ]@ $% ^ + = /</li></ul>
</li><li id="mrs_01_0513__li1448912519610">Cannot be the same as the username or the username spelled backwards.</li></ul> </li><li id="mrs_01_0513__li1448912519610">Cannot be the same as the username or the username spelled backwards.</li></ul>
<p id="mrs_01_0513__p104898514611">Password Strength: The colorbar in red, orange, and green indicates weak, medium, and strong password, respectively.</p> <p id="mrs_01_0513__p104898514611">Password Strength: The colorbar in red, orange, and green indicates weak, medium, and strong password, respectively.</p>
<p id="mrs_01_0513__p948925116614">For versions earlier than MRS 1.7.2, this parameter needs to be configured only when <span class="parmname" id="mrs_01_0513__parmname51079468514"><b>Kerberos Authentication</b></span> is enabled: <span><img id="mrs_01_0513__image1748965111616" src="en-us_image_0000001349137781.png"></span></p>
</td> </td>
</tr> </tr>
<tr id="mrs_01_0513__row156513452062"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.6.2.2.3.1.1 "><p id="mrs_01_0513__p3489205111612">Confirm Password</p> <tr id="mrs_01_0513__row156513452062"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.6.2.2.3.1.1 "><p id="mrs_01_0513__p3489205111612">Confirm Password</p>
</td> </td>
<td class="cellrowborder" valign="top" width="70%" headers="mcps1.3.6.2.2.3.1.2 "><p id="mrs_01_0513__p1948914513613">Enter the password of the Manager administrator again.</p> <td class="cellrowborder" valign="top" width="70%" headers="mcps1.3.6.2.2.3.1.2 "><p id="mrs_01_0513__p1948914513613">Enter the password of the Manager administrator again.</p>
<p id="mrs_01_0513__p134891512612">For versions earlier than MRS 1.7.2, this parameter needs to be configured only when <span class="parmname" id="mrs_01_0513__parmname104331841664"><b>Kerberos Authentication</b></span> is enabled: <span><img id="mrs_01_0513__image1048910511264" src="en-us_image_0000001349257369.png"></span></p>
</td> </td>
</tr> </tr>
<tr id="mrs_01_0513__row1747785819178"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.6.2.2.3.1.1 "><p id="mrs_01_0513__p20277182613184">Login Mode</p> <tr id="mrs_01_0513__row1747785819178"><td class="cellrowborder" valign="top" width="30%" headers="mcps1.3.6.2.2.3.1.1 "><p id="mrs_01_0513__p20277182613184">Login Mode</p>

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<h1 class="topictitle1">Quick Creation of a ClickHouse Cluster</h1> <h1 class="topictitle1">Quick Creation of a ClickHouse Cluster</h1>
<div id="body1605769377962"><p id="mrs_01_2354__p497129202813">This section describes how to quickly <span id="mrs_01_2354__text13430181911386">create</span> a ClickHouse cluster. ClickHouse is a columnar database management system used for online analysis. It features the ultimate compression rate and fast query performance. It is widely used in Internet advertisement, app and web traffic analysis, telecom, finance, and IoT fields.</p> <div id="body1605769377962"><p id="mrs_01_2354__p497129202813">This section describes how to quickly <span id="mrs_01_2354__text13430181911386">create</span> a ClickHouse cluster. ClickHouse is a columnar database management system used for online analysis. It features the ultimate compression rate and fast query performance. It is widely used in Internet advertisement, app and web traffic analysis, telecom, finance, and IoT fields.</p>
<p id="mrs_01_2354__p3735133935612">The ClickHouse cluster table engine that uses Kunpeng as the CPU architecture does not support HDFS and Kafka.</p> <p id="mrs_01_2354__p3735133935612">The ClickHouse cluster table engine that uses Kunpeng as the CPU architecture does not support HDFS and Kafka.</p>
<div class="section" id="mrs_01_2354__section872610512187"><h4 class="sectiontitle">Quick Creation of a ClickHouse Cluster</h4><ol id="mrs_01_2354__ol9221181084311"><li id="mrs_01_2354__li04523742211"><span>Log in to the MRS console.</span></li><li id="mrs_01_2354__li1447410714224"><span>Click <span class="parmvalue" id="mrs_01_2354__parmvalue1792135113914"><b>Create Cluster</b></span>. The page for creating a cluster is displayed.</span></li><li id="mrs_01_2354__li18785535122717"><span>Click the <strong id="mrs_01_2354__b176861383597">Quick Config</strong> tab.</span></li><li id="mrs_01_2354__li5491478220"><span>Configure basic cluster information. For details about the parameters, see <a href="mrs_01_0513.html">Creating a Custom Cluster</a>.</span><p><ul id="mrs_01_2354__ul516975743915"><li id="mrs_01_2354__li3169457133912"><strong id="mrs_01_2354__b613322816194">Region</strong>: Use the default value.</li><li id="mrs_01_2354__li109321948154118"><strong id="mrs_01_2354__b1143023121913">Cluster Name</strong>: You can use the default name. However, you are advised to include a project name abbreviation or date for consolidated memory and easy distinguishing, Example: <strong id="mrs_01_2354__b822113871118">mrs_20201121</strong>.</li><li id="mrs_01_2354__li813669429"><strong id="mrs_01_2354__b483383820196">Cluster Version</strong>: Select the latest version, which is the default value. (The components provided by a cluster vary according to the cluster version. Select a cluster version based on site requirements.)</li><li id="mrs_01_2354__li394315107422"><strong id="mrs_01_2354__b1927164010198">Component</strong>: Select <strong id="mrs_01_2354__b1928124011916">ClickHouse cluster</strong>.</li><li id="mrs_01_2354__li1542892513255"><strong id="mrs_01_2354__b165765303993819">AZ</strong>: Use the default value.</li><li id="mrs_01_2354__li8428182572513"><strong id="mrs_01_2354__b78899616393819">VPC</strong>: Use the default value. If there is no available VPC, click <strong id="mrs_01_2354__b162429939993819">View VPC</strong> to access the VPC console and create a new VPC.</li><li id="mrs_01_2354__li642832513258"><strong id="mrs_01_2354__b58274135393819">Subnet</strong>: Use the default value.</li><li id="mrs_01_2354__li6428142514254"><strong id="mrs_01_2354__b160201789293819">Enterprise Project</strong>: Use the default value.</li><li id="mrs_01_2354__li721621618423"><strong id="mrs_01_2354__b67387542198">Cluster Node</strong>: Select the number of cluster nodes and node specifications based on site requirements. For MRS 3.<em id="mrs_01_2354__i1251192233213">x</em> or later, the memory of the master node must be greater than 64 GB.</li><li id="mrs_01_2354__li1943755115020"><strong id="mrs_01_2354__b496214306135">Kerberos Authentication</strong>: Select whether to enable Kerberos authentication.</li><li id="mrs_01_2354__li1251555218551"><strong id="mrs_01_2354__b1514325661914">Username</strong>: The default value is <strong id="mrs_01_2354__b5143195621920">root/admin</strong>. User <strong id="mrs_01_2354__b91443560199">root</strong> is used to remotely log in to ECSs, and user <strong id="mrs_01_2354__b15144105617194">admin</strong> is used to access the cluster management page.</li></ul> <div class="section" id="mrs_01_2354__section872610512187"><h4 class="sectiontitle">Quick Creation of a ClickHouse Cluster</h4><ol id="mrs_01_2354__ol9221181084311"><li id="mrs_01_2354__li04523742211"><span>Log in to the MRS console.</span></li><li id="mrs_01_2354__li1447410714224"><span>Click <span class="parmvalue" id="mrs_01_2354__parmvalue1792135113914"><b>Create Cluster</b></span>. The page for creating a cluster is displayed.</span></li><li id="mrs_01_2354__li18785535122717"><span>Click the <strong id="mrs_01_2354__b176861383597">Quick Config</strong> tab.</span></li><li id="mrs_01_2354__li5491478220"><span>Configure basic cluster information. For details about the parameters, see <a href="mrs_01_0513.html">Creating a Custom Cluster</a>.</span><p><ul id="mrs_01_2354__ul516975743915"><li id="mrs_01_2354__li3169457133912"><strong id="mrs_01_2354__b613322816194">Region</strong>: Use the default value.</li><li id="mrs_01_2354__li109321948154118"><strong id="mrs_01_2354__b1143023121913">Cluster Name</strong>: You can use the default name. However, you are advised to include a project name abbreviation or date for consolidated memory and easy distinguishing, Example: <strong id="mrs_01_2354__b822113871118">mrs_20201121</strong>.</li><li id="mrs_01_2354__li813669429"><strong id="mrs_01_2354__b483383820196">Cluster Version</strong>: Select the latest version, which is the default value. (The components provided by a cluster vary according to the cluster version. Select a cluster version based on site requirements.)</li><li id="mrs_01_2354__li394315107422"><strong id="mrs_01_2354__b1927164010198">Component</strong>: Select <strong id="mrs_01_2354__b1928124011916">ClickHouse cluster</strong>.</li><li id="mrs_01_2354__li1542892513255"><strong id="mrs_01_2354__b165765303993819">AZ</strong>: Use the default value.</li><li id="mrs_01_2354__li8428182572513"><strong id="mrs_01_2354__b78899616393819">VPC</strong>: Use the default value. If there is no available VPC, click <strong id="mrs_01_2354__b162429939993819">View VPC</strong> to access the VPC console and create a new VPC.</li><li id="mrs_01_2354__li642832513258"><strong id="mrs_01_2354__b58274135393819">Subnet</strong>: Use the default value.</li><li id="mrs_01_2354__li6428142514254"><strong id="mrs_01_2354__b160201789293819">Enterprise Project</strong>: Use the default value.</li><li id="mrs_01_2354__li721621618423"><strong id="mrs_01_2354__b67387542198">Cluster Node</strong>: Select the number of cluster nodes and node specifications based on site requirements. For MRS 3.<em id="mrs_01_2354__i1251192233213">x</em> or later, the memory of the master node must be greater than 64 GB.</li><li id="mrs_01_2354__li1943755115020"><strong id="mrs_01_2354__b496214306135">Kerberos Authentication</strong>: Select whether to enable Kerberos authentication.</li><li id="mrs_01_2354__li1251555218551"><strong id="mrs_01_2354__b1514325661914">Username</strong>: The default value is <strong id="mrs_01_2354__b5143195621920">root/admin</strong>. User <strong id="mrs_01_2354__b91443560199">root</strong> is used to remotely log in to ECSs, and user <strong id="mrs_01_2354__b15144105617194">admin</strong> is used to access the cluster management page.</li><li id="mrs_01_2354__li6772231206"><strong id="mrs_01_2354__b2643559191919">Password</strong>: Set a password for user <strong id="mrs_01_2354__b36481359111919">root</strong>/<strong id="mrs_01_2354__b136485592194">admin</strong>.</li><li id="mrs_01_2354__li67724316011"><strong id="mrs_01_2354__b118741332152216">Confirm Password</strong>: Enter the password of user <strong id="mrs_01_2354__b1087573212223">root</strong>/<strong id="mrs_01_2354__b7875203219221">admin</strong> again.</li></ul>
</p></li><li id="mrs_01_2354__li196444596283"><span>Select <strong id="mrs_01_2354__b114281631328">Enable</strong> to enable secure communications. For details, see <a href="mrs_01_0786.html">Communication Security Authorization</a>.</span></li><li id="mrs_01_2354__li1343152735714"><span><span class="uicontrol" id="mrs_01_2354__uicontrol109677296150"><b>Click Apply Now.</b></span></span><p><p id="mrs_01_2354__p72082324387">If Kerberos authentication is enabled for a cluster, check whether Kerberos authentication is required. If yes, click <strong id="mrs_01_2354__b213410388201555">Continue</strong>. If no, click <strong id="mrs_01_2354__b88540324801555">Back</strong> to disable Kerberos authentication and then create a cluster.</p> </p></li><li id="mrs_01_2354__li196444596283"><span>Select <strong id="mrs_01_2354__b114281631328">Enable</strong> to enable secure communications. For details, see <a href="mrs_01_0786.html">Communication Security Authorization</a>.</span></li><li id="mrs_01_2354__li1343152735714"><span><span class="uicontrol" id="mrs_01_2354__uicontrol109677296150"><b>Click Apply Now.</b></span></span><p><p id="mrs_01_2354__p72082324387">If Kerberos authentication is enabled for a cluster, check whether Kerberos authentication is required. If yes, click <strong id="mrs_01_2354__b213410388201555">Continue</strong>. If no, click <strong id="mrs_01_2354__b88540324801555">Back</strong> to disable Kerberos authentication and then create a cluster.</p>
</p></li><li id="mrs_01_2354__li1591417431483"><span>Click <strong id="mrs_01_2354__b154868972015">Back to Cluster List</strong> to view the cluster status. Click <strong id="mrs_01_2354__b16811101010206">Access Cluster</strong> to view cluster details.</span><p><p id="mrs_01_2354__p17991813181220">For details about cluster status during creation, see the description of the status parameters in <a href="en-us_topic_0012808230.html#en-us_topic_0012808230__table3950169215120">Table 1</a>.</p> </p></li><li id="mrs_01_2354__li1591417431483"><span>Click <strong id="mrs_01_2354__b154868972015">Back to Cluster List</strong> to view the cluster status. Click <strong id="mrs_01_2354__b16811101010206">Access Cluster</strong> to view cluster details.</span><p><p id="mrs_01_2354__p17991813181220">For details about cluster status during creation, see the description of the status parameters in <a href="en-us_topic_0012808230.html#en-us_topic_0012808230__table3950169215120">Table 1</a>.</p>
<p id="mrs_01_2354__p1799191310124">It takes some time to create a cluster. The initial status of the cluster is <strong id="mrs_01_2354__b119901818192018">Starting</strong>. After the cluster has been created successfully, the cluster status becomes <strong id="mrs_01_2354__b1599117186204">Running</strong>.</p> <p id="mrs_01_2354__p1799191310124">It takes some time to create a cluster. The initial status of the cluster is <strong id="mrs_01_2354__b119901818192018">Starting</strong>. After the cluster has been created successfully, the cluster status becomes <strong id="mrs_01_2354__b1599117186204">Running</strong>.</p>

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<div id="body1606703060454"><p id="mrs_01_2355__p497129202813">This section describes how to quickly <span id="mrs_01_2355__text13430181911386">create</span> a real-time analysis cluster. The real-time analysis cluster uses Hadoop, Kafka, Flink, and ClickHouse to collect, analyze, and query a large amount of data in real time.</p> <div id="body1606703060454"><p id="mrs_01_2355__p497129202813">This section describes how to quickly <span id="mrs_01_2355__text13430181911386">create</span> a real-time analysis cluster. The real-time analysis cluster uses Hadoop, Kafka, Flink, and ClickHouse to collect, analyze, and query a large amount of data in real time.</p>
<p id="mrs_01_2355__p13556247171211">The real-time analysis cluster consists of the following components:</p> <p id="mrs_01_2355__p13556247171211">The real-time analysis cluster consists of the following components:</p>
<ul id="mrs_01_2355__ul17273649171214"><li id="mrs_01_2355__li0273204915127">MRS 3.1.0: Hadoop 3.1.1, Kafka 2.11-2.4.0, Flink 1.12.0, ClickHouse 21.3.4.25, ZooKeeper 3.5.6, and Ranger 2.0.0.</li></ul> <ul id="mrs_01_2355__ul17273649171214"><li id="mrs_01_2355__li0273204915127">MRS 3.1.0: Hadoop 3.1.1, Kafka 2.11-2.4.0, Flink 1.12.0, ClickHouse 21.3.4.25, ZooKeeper 3.5.6, and Ranger 2.0.0.</li></ul>
<div class="section" id="mrs_01_2355__section872610512187"><h4 class="sectiontitle">Quick Creation of a Real-time Analysis Cluster</h4><ol id="mrs_01_2355__ol9221181084311"><li id="mrs_01_2355__li04523742211"><span>Log in to the MRS console.</span></li><li id="mrs_01_2355__li1447410714224"><span>Click <span class="parmvalue" id="mrs_01_2355__parmvalue1792135113914"><b>Create Cluster</b></span>. The page for creating a cluster is displayed.</span></li><li id="mrs_01_2355__li18785535122717"><span>Click the <strong id="mrs_01_2355__b3280195514">Quick Config</strong> tab.</span></li><li id="mrs_01_2355__li5491478220"><span>Configure basic cluster information. For details about the parameters, see <a href="mrs_01_0513.html">Creating a Custom Cluster</a>.</span><p><ul id="mrs_01_2355__ul516975743915"><li id="mrs_01_2355__li3169457133912"><strong id="mrs_01_2355__b6933162051412">Region</strong>: Use the default value.</li><li id="mrs_01_2355__li109321948154118"><strong id="mrs_01_2355__b109608236148">Cluster Name</strong>: You can use the default name. However, you are advised to include a project name abbreviation or date for consolidated memory and easy distinguishing, Example: <strong id="mrs_01_2355__b871672971416">mrs_20201130</strong>.</li><li id="mrs_01_2355__li813669429"><strong id="mrs_01_2355__b288111309146">Cluster Version</strong>: Select the latest version, which is the default value. (The components provided by a cluster vary according to the cluster version. Select a cluster version based on site requirements.)</li><li id="mrs_01_2355__li394315107422"><strong id="mrs_01_2355__b82895329148">Component</strong>: Select <strong id="mrs_01_2355__b029023216146">Real-time Analysis Cluster</strong>.</li><li id="mrs_01_2355__li1542892513255"><strong id="mrs_01_2355__b105899896394249">AZ</strong>: Use the default value.</li><li id="mrs_01_2355__li8428182572513"><strong id="mrs_01_2355__b55767216294249">VPC</strong>: Use the default value. If there is no available VPC, click <strong id="mrs_01_2355__b31141039594249">View VPC</strong> to access the VPC console and create a new VPC.</li><li id="mrs_01_2355__li642832513258"><strong id="mrs_01_2355__b98015150594249">Subnet</strong>: Use the default value.</li><li id="mrs_01_2355__li6428142514254"><strong id="mrs_01_2355__b213469147294249">Enterprise Project</strong>: Use the default value.</li><li id="mrs_01_2355__li721621618423"><strong id="mrs_01_2355__b17261241518">Cluster Node</strong>: Select the number of cluster nodes and node specifications based on site requirements. For MRS 3.<em id="mrs_01_2355__i6837113810323">x</em> or later, the memory of the master node must be greater than 64 GB.</li><li id="mrs_01_2355__li1943755115020"><strong id="mrs_01_2355__b63305524135">Kerberos Authentication</strong>: Select whether to enable Kerberos authentication.</li><li id="mrs_01_2355__li156367306543">MRS 3.1.2-LTS.3<ul id="mrs_01_2355__ul86361230145418"><li id="mrs_01_2355__li1663613045415"><strong id="mrs_01_2355__b1063515306542">Username</strong>: The default value is <strong id="mrs_01_2355__b17635153015541">root/admin</strong>. User <strong id="mrs_01_2355__b1263513015548">root</strong> is used to remotely log in to ECSs, and user <strong id="mrs_01_2355__b10636193015413">admin</strong> is used to access the cluster management page.</li><li id="mrs_01_2355__li763683018545"><strong id="mrs_01_2355__b2063653085416">Password</strong>: Set a password for user <strong id="mrs_01_2355__b8636830115418">root</strong>/<strong id="mrs_01_2355__b126369301543">admin</strong>.</li><li id="mrs_01_2355__li163613045413"><strong id="mrs_01_2355__b1963614301544">Confirm Password</strong>: Enter the password of user <strong id="mrs_01_2355__b16361730135419">root</strong>/<strong id="mrs_01_2355__b663603015543">admin</strong> again.</li></ul> <div class="section" id="mrs_01_2355__section872610512187"><h4 class="sectiontitle">Quick Creation of a Real-time Analysis Cluster</h4><ol id="mrs_01_2355__ol9221181084311"><li id="mrs_01_2355__li04523742211"><span>Log in to the MRS console.</span></li><li id="mrs_01_2355__li1447410714224"><span>Click <span class="parmvalue" id="mrs_01_2355__parmvalue1792135113914"><b>Create Cluster</b></span>. The page for creating a cluster is displayed.</span></li><li id="mrs_01_2355__li18785535122717"><span>Click the <strong id="mrs_01_2355__b3280195514">Quick Config</strong> tab.</span></li><li id="mrs_01_2355__li5491478220"><span>Configure basic cluster information. For details about the parameters, see <a href="mrs_01_0513.html">Creating a Custom Cluster</a>.</span><p><ul id="mrs_01_2355__ul516975743915"><li id="mrs_01_2355__li3169457133912"><strong id="mrs_01_2355__b6933162051412">Region</strong>: Use the default value.</li><li id="mrs_01_2355__li109321948154118"><strong id="mrs_01_2355__b109608236148">Cluster Name</strong>: You can use the default name. However, you are advised to include a project name abbreviation or date for consolidated memory and easy distinguishing, Example: <strong id="mrs_01_2355__b871672971416">mrs_20201130</strong>.</li><li id="mrs_01_2355__li813669429"><strong id="mrs_01_2355__b288111309146">Cluster Version</strong>: Select the latest version, which is the default value. (The components provided by a cluster vary according to the cluster version. Select a cluster version based on site requirements.)</li><li id="mrs_01_2355__li394315107422"><strong id="mrs_01_2355__b82895329148">Component</strong>: Select <strong id="mrs_01_2355__b029023216146">Real-time Analysis Cluster</strong>.</li><li id="mrs_01_2355__li1542892513255"><strong id="mrs_01_2355__b105899896394249">AZ</strong>: Use the default value.</li><li id="mrs_01_2355__li8428182572513"><strong id="mrs_01_2355__b55767216294249">VPC</strong>: Use the default value. If there is no available VPC, click <strong id="mrs_01_2355__b31141039594249">View VPC</strong> to access the VPC console and create a new VPC.</li><li id="mrs_01_2355__li642832513258"><strong id="mrs_01_2355__b98015150594249">Subnet</strong>: Use the default value.</li><li id="mrs_01_2355__li6428142514254"><strong id="mrs_01_2355__b213469147294249">Enterprise Project</strong>: Use the default value.</li><li id="mrs_01_2355__li721621618423"><strong id="mrs_01_2355__b17261241518">Cluster Node</strong>: Select the number of cluster nodes and node specifications based on site requirements. For MRS 3.<em id="mrs_01_2355__i6837113810323">x</em> or later, the memory of the master node must be greater than 64 GB.</li><li id="mrs_01_2355__li1943755115020"><strong id="mrs_01_2355__b63305524135">Kerberos Authentication</strong>: Select whether to enable Kerberos authentication.</li><li id="mrs_01_2355__li1663613045415"><strong id="mrs_01_2355__b1063515306542">Username</strong>: The default value is <strong id="mrs_01_2355__b17635153015541">root/admin</strong>. User <strong id="mrs_01_2355__b1263513015548">root</strong> is used to remotely log in to ECSs, and user <strong id="mrs_01_2355__b10636193015413">admin</strong> is used to access the cluster management page.</li><li id="mrs_01_2355__li763683018545"><strong id="mrs_01_2355__b2063653085416">Password</strong>: Set a password for user <strong id="mrs_01_2355__b8636830115418">root</strong>/<strong id="mrs_01_2355__b126369301543">admin</strong>.</li><li id="mrs_01_2355__li163613045413"><strong id="mrs_01_2355__b1963614301544">Confirm Password</strong>: Enter the password of user <strong id="mrs_01_2355__b16361730135419">root</strong>/<strong id="mrs_01_2355__b663603015543">admin</strong> again.</li></ul>
</li><li id="mrs_01_2355__li54966116559">Versions earlier than MRS 3.1.2-LTS.3<ul id="mrs_01_2355__ul1294651511550"><li id="mrs_01_2355__li16735736165214"><strong id="mrs_01_2355__b19576231191310">Username</strong>: The default username is <strong id="mrs_01_2355__b2576031101312">admin</strong>, which is used to log in to MRS Manager.</li><li id="mrs_01_2355__li1073513611525"><strong id="mrs_01_2355__b1522914339137">Password</strong>: Set a password for user <strong id="mrs_01_2355__b923014332132">admin</strong>.</li><li id="mrs_01_2355__li1373593613528"><strong id="mrs_01_2355__b11490834191318">Confirm Password</strong>: Enter the password of user <strong id="mrs_01_2355__b1949011341132">admin</strong> again.</li><li id="mrs_01_2355__li1721005012177"><strong id="mrs_01_2355__b10699163541319">Key Pair</strong>: Select a key pair from the drop-down list to log in to an ECS. Select <strong id="mrs_01_2355__b1769919358135">"I acknowledge that I have obtained private key file </strong><i><span class="varname" id="mrs_01_2355__varname370023513132">SSHkey-xxx</span></i><strong id="mrs_01_2355__b970018354135"> and that without this file I will not be able to log in to my ECS.</strong>" If you have never created a key pair, click <span class="uicontrol" id="mrs_01_2355__uicontrol164489101413"><b>View Key Pair</b></span> to create or import a key pair. And then, obtain a private key file.</li></ul>
</li></ul>
</p></li><li id="mrs_01_2355__li196444596283"><span>Select <strong id="mrs_01_2355__b7993193819214">Enable</strong> to enable secure communications. For details, see <a href="mrs_01_0786.html">Communication Security Authorization</a>.</span></li><li id="mrs_01_2355__li1343152735714"><span><span class="uicontrol" id="mrs_01_2355__uicontrol109677296150"><b>Click Apply Now.</b></span></span><p><p id="mrs_01_2355__p72082324387">If Kerberos authentication is enabled for a cluster, check whether Kerberos authentication is required. If yes, click <strong id="mrs_01_2355__b91833042402046">Continue</strong>. If no, click <strong id="mrs_01_2355__b171640756802046">Back</strong> to disable Kerberos authentication and then create a cluster.</p> </p></li><li id="mrs_01_2355__li196444596283"><span>Select <strong id="mrs_01_2355__b7993193819214">Enable</strong> to enable secure communications. For details, see <a href="mrs_01_0786.html">Communication Security Authorization</a>.</span></li><li id="mrs_01_2355__li1343152735714"><span><span class="uicontrol" id="mrs_01_2355__uicontrol109677296150"><b>Click Apply Now.</b></span></span><p><p id="mrs_01_2355__p72082324387">If Kerberos authentication is enabled for a cluster, check whether Kerberos authentication is required. If yes, click <strong id="mrs_01_2355__b91833042402046">Continue</strong>. If no, click <strong id="mrs_01_2355__b171640756802046">Back</strong> to disable Kerberos authentication and then create a cluster.</p>
</p></li><li id="mrs_01_2355__li1591417431483"><span>Click <strong id="mrs_01_2355__b6768123531517">Back to Cluster List</strong> to view the cluster status. Click <strong id="mrs_01_2355__b1761213369151">Access Cluster</strong> to view cluster details.</span><p><p id="mrs_01_2355__p17991813181220">For details about cluster status during creation, see the description of the status parameters in <a href="en-us_topic_0012808230.html#en-us_topic_0012808230__table3950169215120">Table 1</a>.</p> </p></li><li id="mrs_01_2355__li1591417431483"><span>Click <strong id="mrs_01_2355__b6768123531517">Back to Cluster List</strong> to view the cluster status. Click <strong id="mrs_01_2355__b1761213369151">Access Cluster</strong> to view cluster details.</span><p><p id="mrs_01_2355__p17991813181220">For details about cluster status during creation, see the description of the status parameters in <a href="en-us_topic_0012808230.html#en-us_topic_0012808230__table3950169215120">Table 1</a>.</p>
<p id="mrs_01_2355__p1799191310124">It takes some time to create a cluster. The initial status of the cluster is <strong id="mrs_01_2355__b612853951515">Starting</strong>. After the cluster has been created successfully, the cluster status becomes <strong id="mrs_01_2355__b1412823914154">Running</strong>.</p> <p id="mrs_01_2355__p1799191310124">It takes some time to create a cluster. The initial status of the cluster is <strong id="mrs_01_2355__b612853951515">Starting</strong>. After the cluster has been created successfully, the cluster status becomes <strong id="mrs_01_2355__b1412823914154">Running</strong>.</p>

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</li> </li>
<li class="ulchildlink"><strong><a href="mrs_01_0496.html">Quick Creation of an HBase Analysis Cluster</a></strong><br> <li class="ulchildlink"><strong><a href="mrs_01_0496.html">Quick Creation of an HBase Analysis Cluster</a></strong><br>
</li> </li>
<li class="ulchildlink"><strong><a href="mrs_01_0497.html">Quick Creation of a Kafka Streaming Cluster</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="mrs_01_2354.html">Quick Creation of a ClickHouse Cluster</a></strong><br> <li class="ulchildlink"><strong><a href="mrs_01_2354.html">Quick Creation of a ClickHouse Cluster</a></strong><br>
</li> </li>
<li class="ulchildlink"><strong><a href="mrs_01_2355.html">Quick Creation of a Real-time Analysis Cluster</a></strong><br> <li class="ulchildlink"><strong><a href="mrs_01_2355.html">Quick Creation of a Real-time Analysis Cluster</a></strong><br>

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<h1 class="topictitle1">Patch Update</h1> <h1 class="topictitle1">Patch Update</h1>
<div id="en-us_topic_0000001463047092_body0000001463047092"><p id="mrs_01_248926__en-us_topic_0000001463047092_p8060118">When a new patch is available in the cluster, the system pushes the patch online. You can install the patch in a few clicks.</p> <div id="en-us_topic_0000001463047092_body0000001463047092"><p id="mrs_01_248926__en-us_topic_0000001463047092_p8060118">When a new patch is available in the cluster, the system pushes the patch online. You can install the patch in a few clicks.</p>
<div class="note" id="mrs_01_248926__en-us_topic_0000001463047092_note1879145221712"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="mrs_01_248926__en-us_topic_0000001463047092_p380115211177">This section applies only to MRS 2.x and earlier versions, and MRS 3.2.0-LTS.1 and later versions.</p> <div class="note" id="mrs_01_248926__en-us_topic_0000001463047092_note1879145221712"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="mrs_01_248926__en-us_topic_0000001463047092_p380115211177">This section applies only to MRS 2.x and earlier versions, and MRS 3.2.0-LTS and later versions.</p>
</div></div> </div></div>
<ol id="mrs_01_248926__en-us_topic_0000001463047092_ol1213617527510"><li id="mrs_01_248926__en-us_topic_0000001463047092_li251701501815"><span>Log in to the MRS management console.</span></li><li id="mrs_01_248926__en-us_topic_0000001463047092_li139710345186"><span>Choose <strong id="mrs_01_248926__en-us_topic_0000001463047092_b595286886800">Clusters</strong> &gt; <strong id="mrs_01_248926__en-us_topic_0000001463047092_b448536665800">Active Clusters</strong> and click the name of your desired cluster.</span></li><li id="mrs_01_248926__en-us_topic_0000001463047092_li9621202012127"><span>On the cluster details page, click <strong id="mrs_01_248926__en-us_topic_0000001463047092_b2093997176800">Patches</strong>.</span><p><p id="mrs_01_248926__en-us_topic_0000001463047092_p18680525103713"></p> <ol id="mrs_01_248926__en-us_topic_0000001463047092_ol1213617527510"><li id="mrs_01_248926__en-us_topic_0000001463047092_li251701501815"><span>Log in to the MRS management console.</span></li><li id="mrs_01_248926__en-us_topic_0000001463047092_li139710345186"><span>Choose <strong id="mrs_01_248926__en-us_topic_0000001463047092_b595286886800">Clusters</strong> &gt; <strong id="mrs_01_248926__en-us_topic_0000001463047092_b448536665800">Active Clusters</strong> and click the name of your desired cluster.</span></li><li id="mrs_01_248926__en-us_topic_0000001463047092_li9621202012127"><span>On the cluster details page, click <strong id="mrs_01_248926__en-us_topic_0000001463047092_b2093997176800">Patches</strong>.</span><p><p id="mrs_01_248926__en-us_topic_0000001463047092_p18680525103713"></p>
</p></li><li id="mrs_01_248926__en-us_topic_0000001463047092_li15771104111382"><span>Click <strong id="mrs_01_248926__en-us_topic_0000001463047092_b894144923215">Learn more</strong> in the <strong id="mrs_01_248926__en-us_topic_0000001463047092_b522210286339">Patch Description</strong> column of the target patch, read the description, and confirm the installation procedure and impact.</span></li><li id="mrs_01_248926__en-us_topic_0000001463047092_li585113452195"><span>In the <span class="wintitle" id="mrs_01_248926__en-us_topic_0000001463047092_wintitle685119458194"><b>Operation</b></span> column, click <span class="uicontrol" id="mrs_01_248926__en-us_topic_0000001463047092_uicontrol176551050145210"><b>Install</b></span> to install the target patch.</span></li></ol> </p></li><li id="mrs_01_248926__en-us_topic_0000001463047092_li15771104111382"><span>Click <strong id="mrs_01_248926__en-us_topic_0000001463047092_b894144923215">Learn more</strong> in the <strong id="mrs_01_248926__en-us_topic_0000001463047092_b522210286339">Patch Description</strong> column of the target patch, read the description, and confirm the installation procedure and impact.</span></li><li id="mrs_01_248926__en-us_topic_0000001463047092_li585113452195"><span>In the <span class="wintitle" id="mrs_01_248926__en-us_topic_0000001463047092_wintitle685119458194"><b>Operation</b></span> column, click <span class="uicontrol" id="mrs_01_248926__en-us_topic_0000001463047092_uicontrol176551050145210"><b>Install</b></span> to install the target patch.</span></li></ol>

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</th> </th>
</tr> </tr>
</thead> </thead>
<tbody><tr id="mrs_01_9003__row142585141162"><td class="cellrowborder" valign="top" width="25.19%" headers="mcps1.3.1.1.3.1.1 "><p id="mrs_01_9003__p162591914121618">2023-11-11</p> <tbody><tr id="mrs_01_9003__row1765129114715"><td class="cellrowborder" valign="top" width="25.19%" headers="mcps1.3.1.1.3.1.1 "><p id="mrs_01_9003__p4251131514718">2023-11-16</p>
</td>
<td class="cellrowborder" valign="top" width="74.81%" headers="mcps1.3.1.1.3.1.2 "><p id="mrs_01_9003__p4251161594712">Modified the following content:</p>
<p id="mrs_01_9003__p177328145155">Updated the supported cluster versions. For details, see <a href="mrs_08_0005.html#mrs_08_0005__section7543251422">Components and Versions</a>.</p>
</td>
</tr>
<tr id="mrs_01_9003__row142585141162"><td class="cellrowborder" valign="top" width="25.19%" headers="mcps1.3.1.1.3.1.1 "><p id="mrs_01_9003__p162591914121618">2023-11-11</p>
</td> </td>
<td class="cellrowborder" valign="top" width="74.81%" headers="mcps1.3.1.1.3.1.2 "><p id="mrs_01_9003__p13259201419163">Modified the following content:</p> <td class="cellrowborder" valign="top" width="74.81%" headers="mcps1.3.1.1.3.1.2 "><p id="mrs_01_9003__p13259201419163">Modified the following content:</p>
<p id="mrs_01_9003__p189722484179">Deleted the description about disk encryption parameters. For details, see <a href="mrs_01_0513.html">Creating a Custom Cluster</a>.</p> <p id="mrs_01_9003__p189722484179">Deleted the description about disk encryption parameters. For details, see <a href="mrs_01_0513.html">Creating a Custom Cluster</a>.</p>

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<p id="mrs_08_00341__p1172816615911">Other features are inherited from the open source community and are not enhanced.</p> <p id="mrs_08_00341__p1172816615911">Other features are inherited from the open source community and are not enhanced.</p>
<div class="section" id="mrs_08_00341__s586491e24bf643f1a2937eef1ca8df1b"><h4 class="sectiontitle">Flink Architecture</h4><p id="mrs_08_00341__a4ac661d0a57848a5a7e43ed30c0c609e"><a href="#mrs_08_00341__f58539f3d230744ce84f0255e8938c4e7">Figure 2</a> shows the Flink architecture.</p> <div class="section" id="mrs_08_00341__s586491e24bf643f1a2937eef1ca8df1b"><h4 class="sectiontitle">Flink Architecture</h4><p id="mrs_08_00341__a4ac661d0a57848a5a7e43ed30c0c609e"><a href="#mrs_08_00341__f58539f3d230744ce84f0255e8938c4e7">Figure 2</a> shows the Flink architecture.</p>
<div class="fignone" id="mrs_08_00341__f58539f3d230744ce84f0255e8938c4e7"><a name="mrs_08_00341__f58539f3d230744ce84f0255e8938c4e7"></a><a name="f58539f3d230744ce84f0255e8938c4e7"></a><span class="figcap"><b>Figure 2 </b>Flink architecture</span><br><span><img id="mrs_08_00341__i6c2c637e80784f8a870ac6758d415c6b" src="en-us_image_0000001349390641.png"></span></div> <div class="fignone" id="mrs_08_00341__f58539f3d230744ce84f0255e8938c4e7"><a name="mrs_08_00341__f58539f3d230744ce84f0255e8938c4e7"></a><a name="f58539f3d230744ce84f0255e8938c4e7"></a><span class="figcap"><b>Figure 2 </b>Flink architecture</span><br><span><img id="mrs_08_00341__image1864042416179" src="en-us_image_0000001715933368.png"></span></div>
<p id="mrs_08_00341__a660a91eedf784b748fc14f3eac486230">As shown in the above figure, the entire Flink system consists of three parts:</p> <p id="mrs_08_00341__a660a91eedf784b748fc14f3eac486230">As shown in the above figure, the entire Flink system consists of three parts:</p>
<ul id="mrs_08_00341__u8b1a7b1e52b648ff8947a651d4d6fc18"><li id="mrs_08_00341__l4fc8398a955244e697467340f8b93a8b">Client<p id="mrs_08_00341__a60f41aaa9cc8420db67fd65bd72579cc"><a name="mrs_08_00341__l4fc8398a955244e697467340f8b93a8b"></a><a name="l4fc8398a955244e697467340f8b93a8b"></a>Flink client is used to submit jobs (streaming jobs) to Flink.</p> <ul id="mrs_08_00341__u8b1a7b1e52b648ff8947a651d4d6fc18"><li id="mrs_08_00341__l4fc8398a955244e697467340f8b93a8b">Client<p id="mrs_08_00341__a60f41aaa9cc8420db67fd65bd72579cc"><a name="mrs_08_00341__l4fc8398a955244e697467340f8b93a8b"></a><a name="l4fc8398a955244e697467340f8b93a8b"></a>Flink client is used to submit jobs (streaming jobs) to Flink.</p>
</li><li id="mrs_08_00341__l24cc386557ab489d83de9dd6495704c3">TaskManager<p id="mrs_08_00341__a671ff0026aba4956ac118bd52295bdad"><a name="mrs_08_00341__l24cc386557ab489d83de9dd6495704c3"></a><a name="l24cc386557ab489d83de9dd6495704c3"></a>TaskManager is a service execution node of Flink. It executes specific tasks. A Flink system can have multiple TaskManagers. These TaskManagers are equivalent to each other.</p> </li><li id="mrs_08_00341__l24cc386557ab489d83de9dd6495704c3">TaskManager<p id="mrs_08_00341__a671ff0026aba4956ac118bd52295bdad"><a name="mrs_08_00341__l24cc386557ab489d83de9dd6495704c3"></a><a name="l24cc386557ab489d83de9dd6495704c3"></a>TaskManager is a service execution node of Flink. It executes specific tasks. A Flink system can have multiple TaskManagers. These TaskManagers are equivalent to each other.</p>

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<h1 class="topictitle1">HetuEngine Product Overview</h1> <h1 class="topictitle1">HetuEngine Product Overview</h1>
<div id="body1595485525847"><p id="mrs_08_00681__p207311149203114">This section applies only to MRS 3.1.2-LTS.3.</p> <div id="body1595485525847"><p id="mrs_08_00681__p207311149203114">This section applies only to MRS 3.1.2-LTS.6 or later.</p>
<div class="section" id="mrs_08_00681__section1889319203340"><h4 class="sectiontitle"><span id="mrs_08_00681__text16605957164120">HetuEngine</span> Description</h4><p id="mrs_08_00681__p05782714398"><span id="mrs_08_00681__text160514514285">HetuEngine</span> is an in-house high-performance, interactive SQL analysis and data virtualization engine. It seamlessly integrates with the big data ecosystem to implement interactive query of massive amounts of data within seconds, and supports cross-source and cross-domain unified data access to enable one-stop SQL convergence analysis in the data lake, between lakes, and between lakehouses.</p> <div class="section" id="mrs_08_00681__section1889319203340"><h4 class="sectiontitle"><span id="mrs_08_00681__text16605957164120">HetuEngine</span> Description</h4><p id="mrs_08_00681__p05782714398"><span id="mrs_08_00681__text160514514285">HetuEngine</span> is an in-house high-performance, interactive SQL analysis and data virtualization engine. It seamlessly integrates with the big data ecosystem to implement interactive query of massive amounts of data within seconds, and supports cross-source and cross-domain unified data access to enable one-stop SQL convergence analysis in the data lake, between lakes, and between lakehouses.</p>
</div> </div>
<div class="section" id="mrs_08_00681__section1199917221322"><h4 class="sectiontitle"><span id="mrs_08_00681__text35668211422">HetuEngine</span> Architecture</h4><p id="mrs_08_00681__p1642628321"><span id="mrs_08_00681__text25428384215">HetuEngine</span> consists of different modules. <a href="#mrs_08_00681__fig1249037338">Figure 1</a> shows the architecture.</p> <div class="section" id="mrs_08_00681__section1199917221322"><h4 class="sectiontitle"><span id="mrs_08_00681__text35668211422">HetuEngine</span> Architecture</h4><p id="mrs_08_00681__p1642628321"><span id="mrs_08_00681__text25428384215">HetuEngine</span> consists of different modules. <a href="#mrs_08_00681__fig1249037338">Figure 1</a> shows the architecture.</p>