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doc-exports/docs/dws/umn/dws_01_0019.html
Lu, Huayi c5fcb46315 DWS UMN 801 version 
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-authored-by: Lu, Huayi <luhuayi@huawei.com>
Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
2022-12-13 12:47:57 +00:00

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<a name="EN-US_TOPIC_0000001180440185"></a><a name="EN-US_TOPIC_0000001180440185"></a>
<h1 class="topictitle1">Creating a Cluster</h1>
<div id="body1488272827608"><p id="EN-US_TOPIC_0000001180440185__p885533814325">To use <span id="EN-US_TOPIC_0000001180440185__text912392017164">cloud</span> GaussDB(DWS), create a cluster first. </p>
<p id="EN-US_TOPIC_0000001180440185__p136171054154216">This section describes how to create a data warehouse cluster on the GaussDB(DWS) management console.</p>
<div class="section" id="EN-US_TOPIC_0000001180440185__section15419130142012"><h4 class="sectiontitle">Preparations Before Creating a Cluster</h4><ul id="EN-US_TOPIC_0000001180440185__ul31312184142054"><li id="EN-US_TOPIC_0000001180440185__li60603325142054">You have evaluated the flavor of cluster nodes.<p id="EN-US_TOPIC_0000001180440185__p65134720142823"><a name="EN-US_TOPIC_0000001180440185__li60603325142054"></a><a name="li60603325142054"></a>You can select the number of nodes by data volume, service load, and performance. More nodes bring you stronger storage and compute capabilities. In a GaussDB(DWS) cluster, the number of DNs on each node varies depending on the cluster flavor. Generally, the number ranges from 1 to 4. A DN stores service data by column or row or in hybrid mode, executes data query tasks, and returns execution results.</p>
<p id="EN-US_TOPIC_0000001180440185__p178761821171918">When first using GaussDB(DWS), you can create a cluster with a smaller flavor. Then, you can adjust the cluster scale and node flavor based on the data volume and service load changes without interrupting services. For details, see <a href="dws_01_0023.html">Cluster Scale-out</a>.</p>
</li><li id="EN-US_TOPIC_0000001180440185__li6497962142130">A network access topology has been designed.<p id="EN-US_TOPIC_0000001180440185__p36123656143229"><a name="EN-US_TOPIC_0000001180440185__li6497962142130"></a><a name="li6497962142130"></a>Plan an appropriate AZ and configure the network to isolate the GaussDB(DWS) cluster from other cloud services.</p>
</li><li id="EN-US_TOPIC_0000001180440185__li698334261918">Ensure that the number of available nodes meets the following conditions. Otherwise, the cluster cannot be created.<ul id="EN-US_TOPIC_0000001180440185__ul188971892119"><li id="EN-US_TOPIC_0000001180440185__li524189125713">At least three nodes are required for creating a cluster. You can view the number of available nodes on the <span class="wintitle" id="EN-US_TOPIC_0000001180440185__wintitle881142513165"><b>Clusters</b></span> page.</li><li id="EN-US_TOPIC_0000001180440185__li1296127115568">The number of nodes in the cluster to be created must be less than or equal to the number of available nodes.</li></ul>
</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0000001180440185__section19523079142249"><h4 class="sectiontitle">Creating a Cluster</h4><ol id="EN-US_TOPIC_0000001180440185__ol1649726614233"><li id="EN-US_TOPIC_0000001180440185__li6029015714233"><span>Log in to the GaussDB(DWS) management console.</span></li><li id="EN-US_TOPIC_0000001180440185__li12411775511"><span>Choose <span class="uicontrol" id="EN-US_TOPIC_0000001180440185__uicontrol1743558195311"><b>Clusters</b></span> in the navigation pane on the left.</span></li><li id="EN-US_TOPIC_0000001180440185__li63277252161245"><span>On the <span class="wintitle" id="EN-US_TOPIC_0000001180440185__wintitle9674175313513"><b>Clusters</b></span> page, click <span class="uicontrol" id="EN-US_TOPIC_0000001180440185__uicontrol230942777111412"><b>Create Cluster</b></span>.</span></li><li id="EN-US_TOPIC_0000001180440185__li6930226165913"><span>Select <span class="parmname" id="EN-US_TOPIC_0000001180440185__parmname39321429135910"><b>Region</b></span>.</span><p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001180440185__table108461995918" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Region parameters</caption><thead align="left"><tr id="EN-US_TOPIC_0000001180440185__row11089193597"><th align="left" class="cellrowborder" valign="top" width="21.78%" id="mcps1.3.4.2.4.2.1.2.4.1.1"><p id="EN-US_TOPIC_0000001180440185__p12115219195917"><strong id="EN-US_TOPIC_0000001180440185__en-us_topic_0111441330_b63022988143745">Parameter</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="53.47%" id="mcps1.3.4.2.4.2.1.2.4.1.2"><p id="EN-US_TOPIC_0000001180440185__p312571955912"><strong id="EN-US_TOPIC_0000001180440185__b5196504143335">Description</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="24.75%" id="mcps1.3.4.2.4.2.1.2.4.1.3"><p id="EN-US_TOPIC_0000001180440185__p6135201920598"><strong id="EN-US_TOPIC_0000001180440185__en-us_topic_0111441330_b1200428498185923">Example Value</strong></p>
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0000001180440185__row8143819165910"><td class="cellrowborder" valign="top" width="21.78%" headers="mcps1.3.4.2.4.2.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p363165120464">Region</p>
</td>
<td class="cellrowborder" valign="top" width="53.47%" headers="mcps1.3.4.2.4.2.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p716213192595">Select the actual region where the cluster nodes run.</p>
</td>
<td class="cellrowborder" valign="top" width="24.75%" headers="mcps1.3.4.2.4.2.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p1820114196592">eu-de</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row521517197596"><td class="cellrowborder" valign="top" width="21.78%" headers="mcps1.3.4.2.4.2.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p5220919105914">AZ</p>
</td>
<td class="cellrowborder" valign="top" width="53.47%" headers="mcps1.3.4.2.4.2.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p172251819145914">Select an AZ associated with the cluster region.</p>
</td>
<td class="cellrowborder" valign="top" width="24.75%" headers="mcps1.3.4.2.4.2.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p12901219115910">-</p>
</td>
</tr>
</tbody>
</table>
</div>
</p></li><li id="EN-US_TOPIC_0000001180440185__li3509811181412"><span>Configure <strong id="EN-US_TOPIC_0000001180440185__b06964103285">Resource</strong>, <strong id="EN-US_TOPIC_0000001180440185__b369611019282">CPU Architecture</strong>, and <strong id="EN-US_TOPIC_0000001180440185__b1069641072811">Node Flavor</strong>.</span><p><div class="note" id="EN-US_TOPIC_0000001180440185__note851817116149"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0000001180440185__p7520151121414">The number of nodes in a new cluster cannot exceed the quota that can be used by a user or 32. If the node quota is insufficient, click <strong id="EN-US_TOPIC_0000001180440185__b3933525102910">Increase quota</strong> to submit a service ticket and apply for higher node quota.</p>
</div></div>
<div class="fignone" id="EN-US_TOPIC_0000001180440185__fig3550151115141"><span class="figcap"><b>Figure 1 </b>Configuring node parameters</span><br><span><img id="EN-US_TOPIC_0000001180440185__image127035319156" src="figure/en-us_image_0000001180320503.png" height="123.763815" width="461.84250000000003" title="Click to enlarge" class="imgResize"></span></div>
<div class="p" id="EN-US_TOPIC_0000001180440185__p898910512257">
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001180440185__table11569171131419" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Node configuration parameters</caption><thead align="left"><tr id="EN-US_TOPIC_0000001180440185__row1858451161414"><th align="left" class="cellrowborder" valign="top" width="21.62%" id="mcps1.3.4.2.5.2.3.1.2.4.1.1"><p id="EN-US_TOPIC_0000001180440185__p859013118144"><strong id="EN-US_TOPIC_0000001180440185__b431738142">Parameter</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="53.76%" id="mcps1.3.4.2.5.2.3.1.2.4.1.2"><p id="EN-US_TOPIC_0000001180440185__p16598111101411"><strong id="EN-US_TOPIC_0000001180440185__b458189874">Description</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="24.62%" id="mcps1.3.4.2.5.2.3.1.2.4.1.3"><p id="EN-US_TOPIC_0000001180440185__p10605111110145"><strong id="EN-US_TOPIC_0000001180440185__b829101164">Example Value</strong></p>
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0000001180440185__row1378423745817"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p16301222821">Cluster Type</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p143014226211">GaussDB(DWS) cluster types include:</p>
<ul id="EN-US_TOPIC_0000001180440185__ul139998019510"><li id="EN-US_TOPIC_0000001180440185__li1633116165484"><strong id="EN-US_TOPIC_0000001180440185__b141593476710370">Standard</strong>: The OLAP database engine is used, supporting online query and offline analysis of 10 PB data. A Standard cluster can be scaled out to 1024 nodes.</li></ul>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p23014229219">Standard</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row1830203663514"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p14304113683516">CPU Architecture</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p1530403616356">The CPU architecture includes:</p>
<ul id="EN-US_TOPIC_0000001180440185__ul10895104293716"><li id="EN-US_TOPIC_0000001180440185__li1389574263716"><strong id="EN-US_TOPIC_0000001180440185__b1450617310242">x86</strong></li></ul>
<div class="note" id="EN-US_TOPIC_0000001180440185__note39793411879"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000001180440185__p18979144119711">The only difference between the x86 and Kunpeng architectures lies in the underlying architecture, of which the application layer is unaware. The same SQL syntax is used. If x86 servers are sold out when you create a cluster, select the Kunpeng architecture.</p>
</div></div>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p1030420362351">x86</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row361421141419"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p4467319276">Node Flavor</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p4126175441619">Select the desired node flavor based on service requirements. Each node flavor displays the vCPU, memory, and recommended application scenario.</p>
<p id="EN-US_TOPIC_0000001180440185__p4297105916918"></p>
<p id="EN-US_TOPIC_0000001180440185__p6731030194815"><a href="#EN-US_TOPIC_0000001180440185__table111901234141316">Table 3</a> describes the node flavors supported by GaussDB(DWS).</p>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p9172175111559">dws.m3.xlarge</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row4633711181419"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p1263811191417">Nodes</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p364381181414">Specify the number of nodes in the cluster.</p>
<p id="EN-US_TOPIC_0000001180440185__p1041694885213">The number of nodes ranges from 3 to 256.</p>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p186497115143">3</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row17311142114"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p11732843120">Total Capacity (GB)</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p13121141215410">Displays the total capacity of a cluster.</p>
<p id="EN-US_TOPIC_0000001180440185__p1473213414110">The storage capacity of each flavor is the actual database space used for storing data. The displayed storage capacity has deducted the disk space consumed by backups and RAIDs.</p>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.5.2.3.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p973210412120">-</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="tablenoborder"><a name="EN-US_TOPIC_0000001180440185__table111901234141316"></a><a name="table111901234141316"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001180440185__table111901234141316" frame="border" border="1" rules="all"><caption><b>Table 3 </b>Flavor description</caption><thead align="left"><tr id="EN-US_TOPIC_0000001180440185__row1222193461316"><th align="left" class="cellrowborder" valign="top" width="29.630000000000003%" id="mcps1.3.4.2.5.2.4.2.6.1.1"><p id="EN-US_TOPIC_0000001180440185__p1123813348130"><strong id="EN-US_TOPIC_0000001180440185__b84235270618018">Type</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="13.94%" id="mcps1.3.4.2.5.2.4.2.6.1.2"><p id="EN-US_TOPIC_0000001180440185__p72462034201310"><strong id="EN-US_TOPIC_0000001180440185__b1190432016">vCPU Cores</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="12.45%" id="mcps1.3.4.2.5.2.4.2.6.1.3"><p id="EN-US_TOPIC_0000001180440185__p52541134191315"><strong id="EN-US_TOPIC_0000001180440185__b47499789">Memory</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="15.97%" id="mcps1.3.4.2.5.2.4.2.6.1.4"><p id="EN-US_TOPIC_0000001180440185__p326853417138"><strong id="EN-US_TOPIC_0000001180440185__b9493739164011">Disk Size</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="28.01%" id="mcps1.3.4.2.5.2.4.2.6.1.5"><p id="EN-US_TOPIC_0000001180440185__p12761734181310"><strong id="EN-US_TOPIC_0000001180440185__b18495203915406">Disk Type</strong></p>
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0000001180440185__row3331203413136"><td class="cellrowborder" valign="top" width="29.630000000000003%" headers="mcps1.3.4.2.5.2.4.2.6.1.1 "><p id="EN-US_TOPIC_0000001180440185__p1434743418139">dws.m1.xlarge.ultrahigh</p>
</td>
<td class="cellrowborder" valign="top" width="13.94%" headers="mcps1.3.4.2.5.2.4.2.6.1.2 "><p id="EN-US_TOPIC_0000001180440185__p734753411319">4</p>
</td>
<td class="cellrowborder" valign="top" width="12.45%" headers="mcps1.3.4.2.5.2.4.2.6.1.3 "><p id="EN-US_TOPIC_0000001180440185__p43541134111313">32 GB</p>
</td>
<td class="cellrowborder" valign="top" width="15.97%" headers="mcps1.3.4.2.5.2.4.2.6.1.4 "><p id="EN-US_TOPIC_0000001180440185__p11362103419130">256 GB</p>
</td>
<td class="cellrowborder" valign="top" width="28.01%" headers="mcps1.3.4.2.5.2.4.2.6.1.5 "><p id="EN-US_TOPIC_0000001180440185__p1817754218151">General-purpose generation I, SSD</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row9424123491313"><td class="cellrowborder" valign="top" width="29.630000000000003%" headers="mcps1.3.4.2.5.2.4.2.6.1.1 "><p id="EN-US_TOPIC_0000001180440185__p194331534151311">dws.d1.xlarge</p>
</td>
<td class="cellrowborder" valign="top" width="13.94%" headers="mcps1.3.4.2.5.2.4.2.6.1.2 "><p id="EN-US_TOPIC_0000001180440185__p19440334161320">4</p>
</td>
<td class="cellrowborder" valign="top" width="12.45%" headers="mcps1.3.4.2.5.2.4.2.6.1.3 "><p id="EN-US_TOPIC_0000001180440185__p744913347132">32 GB</p>
</td>
<td class="cellrowborder" valign="top" width="15.97%" headers="mcps1.3.4.2.5.2.4.2.6.1.4 "><p id="EN-US_TOPIC_0000001180440185__p13457123411317">1.68 TB</p>
</td>
<td class="cellrowborder" valign="top" width="28.01%" headers="mcps1.3.4.2.5.2.4.2.6.1.5 "><p id="EN-US_TOPIC_0000001180440185__p6427158171519">Local disk (HDD)</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row0471103412137"><td class="cellrowborder" valign="top" width="29.630000000000003%" headers="mcps1.3.4.2.5.2.4.2.6.1.1 "><p id="EN-US_TOPIC_0000001180440185__p1947111349132">dws.d2.15xlarge</p>
</td>
<td class="cellrowborder" valign="top" width="13.94%" headers="mcps1.3.4.2.5.2.4.2.6.1.2 "><p id="EN-US_TOPIC_0000001180440185__p1648863412133">60</p>
</td>
<td class="cellrowborder" valign="top" width="12.45%" headers="mcps1.3.4.2.5.2.4.2.6.1.3 "><p id="EN-US_TOPIC_0000001180440185__p748814343136">540 GB</p>
</td>
<td class="cellrowborder" valign="top" width="15.97%" headers="mcps1.3.4.2.5.2.4.2.6.1.4 "><p id="EN-US_TOPIC_0000001180440185__p650453412137">13.41 TB</p>
</td>
<td class="cellrowborder" valign="top" width="28.01%" headers="mcps1.3.4.2.5.2.4.2.6.1.5 "><p id="EN-US_TOPIC_0000001180440185__p1224351611164">Disk-intensive generation II (KVM), local disk (HDD)</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row20518834101316"><td class="cellrowborder" valign="top" width="29.630000000000003%" headers="mcps1.3.4.2.5.2.4.2.6.1.1 "><p id="EN-US_TOPIC_0000001180440185__p16526123471319">dws.d2.xlarge</p>
</td>
<td class="cellrowborder" valign="top" width="13.94%" headers="mcps1.3.4.2.5.2.4.2.6.1.2 "><p id="EN-US_TOPIC_0000001180440185__p153493410139">4</p>
</td>
<td class="cellrowborder" valign="top" width="12.45%" headers="mcps1.3.4.2.5.2.4.2.6.1.3 "><p id="EN-US_TOPIC_0000001180440185__p195431134141317">32 GB</p>
</td>
<td class="cellrowborder" valign="top" width="15.97%" headers="mcps1.3.4.2.5.2.4.2.6.1.4 "><p id="EN-US_TOPIC_0000001180440185__p1755013481312">1.68 TB</p>
</td>
<td class="cellrowborder" valign="top" width="28.01%" headers="mcps1.3.4.2.5.2.4.2.6.1.5 "><p id="EN-US_TOPIC_0000001180440185__p1624452811612">Disk-intensive generation II (KVM), local disk (HDD)</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row18660183401313"><td class="cellrowborder" valign="top" width="29.630000000000003%" headers="mcps1.3.4.2.5.2.4.2.6.1.1 "><p id="EN-US_TOPIC_0000001180440185__p1966733471316">dws.m3.xlarge</p>
</td>
<td class="cellrowborder" valign="top" width="13.94%" headers="mcps1.3.4.2.5.2.4.2.6.1.2 "><p id="EN-US_TOPIC_0000001180440185__p8675034131315">4</p>
</td>
<td class="cellrowborder" valign="top" width="12.45%" headers="mcps1.3.4.2.5.2.4.2.6.1.3 "><p id="EN-US_TOPIC_0000001180440185__p16753343135">32 GB</p>
</td>
<td class="cellrowborder" valign="top" width="15.97%" headers="mcps1.3.4.2.5.2.4.2.6.1.4 "><p id="EN-US_TOPIC_0000001180440185__p1268318346136">160 GB</p>
</td>
<td class="cellrowborder" valign="top" width="28.01%" headers="mcps1.3.4.2.5.2.4.2.6.1.5 "><p id="EN-US_TOPIC_0000001180440185__p16510123115163">General-purpose generation III (KVM), SSD</p>
</td>
</tr>
</tbody>
</table>
</div>
</p></li><li id="EN-US_TOPIC_0000001180440185__li250803614263"><span>Configure cluster parameters.</span><p><div class="fignone" id="EN-US_TOPIC_0000001180440185__fig169802175917"><span class="figcap"><b>Figure 2 </b>Cluster parameters</span><br><span><img id="EN-US_TOPIC_0000001180440185__image164010498163" src="figure/en-us_image_0000001134401068.png" width="465.5" height="321.034469" title="Click to enlarge" class="imgResize"></span></div>
<div class="p" id="EN-US_TOPIC_0000001180440185__p68145143318">
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001180440185__table175013003914" frame="border" border="1" rules="all"><caption><b>Table 4 </b>Cluster parameters</caption><thead align="left"><tr id="EN-US_TOPIC_0000001180440185__row9384101317142"><th align="left" class="cellrowborder" valign="top" width="21.62%" id="mcps1.3.4.2.6.2.2.1.2.4.1.1"><p id="EN-US_TOPIC_0000001180440185__p1438491319146"><strong id="EN-US_TOPIC_0000001180440185__b1865306923">Parameter</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="53.76%" id="mcps1.3.4.2.6.2.2.1.2.4.1.2"><p id="EN-US_TOPIC_0000001180440185__p1138413133148"><strong id="EN-US_TOPIC_0000001180440185__b270925155">Description</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="24.62%" id="mcps1.3.4.2.6.2.2.1.2.4.1.3"><p id="EN-US_TOPIC_0000001180440185__p038431301410"><strong id="EN-US_TOPIC_0000001180440185__b1576247499">Example Value</strong></p>
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0000001180440185__row13844134148"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p133848139147">Cluster Name</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p338481314148">Set the name of the data warehouse cluster.</p>
<p id="EN-US_TOPIC_0000001180440185__p9384181313143">Enter 4 to 64 characters. Only case-insensitive letters, digits, hyphens (-), and underscores (_) are allowed. The value must start with a letter.</p>
<div class="note" id="EN-US_TOPIC_0000001180440185__note8833459102916"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000001180440185__p1833175902918">After a cluster is created, its name cannot be changed.</p>
</div></div>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p6386191361418">dws-demo</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row13861713161413"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p183862131145">Cluster Version</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p138631318140">Displays the version of the database instance installed in the cluster. The figure is for reference only.</p>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p131501556240"><em id="EN-US_TOPIC_0000001180440185__i8584161210162">-</em></p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row14386171315141"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p038613131142">Default Database</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p1386191331411">The default database name of the cluster is <strong id="EN-US_TOPIC_0000001180440185__b1615362495712"><span id="EN-US_TOPIC_0000001180440185__text4495111215417">gaussdb</span></strong>.</p>
<div class="note" id="EN-US_TOPIC_0000001180440185__note738761313143"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000001180440185__p6387121361412">This name cannot be changed.</p>
</div></div>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p1838751311416"><span id="EN-US_TOPIC_0000001180440185__text6812113910415">gaussdb</span></p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row73871513111412"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p143871813151417">Administrator Account</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p8387191381414">Set the database administrator name.</p>
<p id="EN-US_TOPIC_0000001180440185__p1438712134144">The administrator username must:</p>
<ul id="EN-US_TOPIC_0000001180440185__ul1838791391412"><li id="EN-US_TOPIC_0000001180440185__li2387713111419">Consist of lowercase letters, digits, or underscores.</li><li id="EN-US_TOPIC_0000001180440185__li3387101318149">Start with a lowercase letter or an underscore.</li><li id="EN-US_TOPIC_0000001180440185__li14387161313143">Contain 6 to 64 characters.</li><li id="EN-US_TOPIC_0000001180440185__li18387913151419">Cannot be a keyword of the GaussDB(DWS) database. For details about the keywords of the GaussDB(DWS) database, see "SQL Reference &gt; Keyword" in the <i><cite id="EN-US_TOPIC_0000001180440185__cite1949388903c14a04b7745742febddc95151936">Data Warehouse Service (DWS) Developer Guide</cite></i>.</li></ul>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p438751319147">dbadmin</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row10387113111411"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p163871139146">Administrator Password</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p11387121313141">Set the password of the database administrator account.</p>
<div class="p" id="EN-US_TOPIC_0000001180440185__p16387141311415">The password complexity requirements are as follows:<ul id="EN-US_TOPIC_0000001180440185__ul13418111318144"><li id="EN-US_TOPIC_0000001180440185__li14183138142">Consists of 8 to 32 characters.</li><li id="EN-US_TOPIC_0000001180440185__li1641831314145">Cannot be the username or the username spelled backwards.</li><li id="EN-US_TOPIC_0000001180440185__li3418171371412">Must contain at least three of the following character types: uppercase letters, lowercase letters, digits, and special characters (~!`?,.:;-_'"(){}[]/&lt;&gt;@#%^&amp;*+|\=)</li><li id="EN-US_TOPIC_0000001180440185__li14181513101414">Passes the weak password check.</li></ul>
</div>
<div class="note" id="EN-US_TOPIC_0000001180440185__note5387181341412"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000001180440185__p192851549957">Change the password regularly and keep it secure.</p>
</div></div>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p14387213131410">-</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row14387141315145"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p338717134144">Confirm Password</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p238720135147">Enter the database administrator password again.</p>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p8387213111412">-</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row938781319144"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p73871513131416">Database Port</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p9387513171414">Specify the port used when the client or application connects to the database in the cluster.</p>
<p id="EN-US_TOPIC_0000001180440185__p15387101320146">The port number ranges from 8000 to 30000.</p>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.6.2.2.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p43872130149">8000</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</p></li><li id="EN-US_TOPIC_0000001180440185__li16061118142338"><span>Configure network parameters.</span><p><div class="fignone" id="EN-US_TOPIC_0000001180440185__fig393813695215"><span class="figcap"><b>Figure 3 </b>Configuring the network</span><br><span><img id="EN-US_TOPIC_0000001180440185__image356217429212" src="figure/en-us_image_0000001134560856.png" height="156.093854" width="464.83500000000004" title="Click to enlarge" class="imgResize"></span></div>
<div class="p" id="EN-US_TOPIC_0000001180440185__p051418417385">
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001180440185__table16335123418419" frame="border" border="1" rules="all"><caption><b>Table 5 </b>Network parameters</caption><thead align="left"><tr id="EN-US_TOPIC_0000001180440185__row3540181381411"><th align="left" class="cellrowborder" valign="top" width="21.62%" id="mcps1.3.4.2.7.2.2.1.2.4.1.1"><p id="EN-US_TOPIC_0000001180440185__p1540313181410"><strong id="EN-US_TOPIC_0000001180440185__b2052703331">Parameter</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="53.76%" id="mcps1.3.4.2.7.2.2.1.2.4.1.2"><p id="EN-US_TOPIC_0000001180440185__p7540313141414"><strong id="EN-US_TOPIC_0000001180440185__b1475912357">Description</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="24.62%" id="mcps1.3.4.2.7.2.2.1.2.4.1.3"><p id="EN-US_TOPIC_0000001180440185__p65405135141"><strong id="EN-US_TOPIC_0000001180440185__b816820488">Example Value</strong></p>
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0000001180440185__row1540171331413"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p454011136140">VPC</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p17540313111411">Specify a virtual private network for nodes in a cluster to isolate networks of different services.</p>
<p id="EN-US_TOPIC_0000001180440185__p0540151317149">If you create a data warehouse cluster for the first time and have not configured the VPC, click <span class="uicontrol" id="EN-US_TOPIC_0000001180440185__uicontrol4891633712228"><b>View VPC</b></span>. On the VPC management console that is displayed, create a VPC that satisfies your needs.</p>
<p id="EN-US_TOPIC_0000001180440185__p154081317142">For details about how to create a VPC, see "VPC and Subnet &gt; Creating a VPC" in the <i><cite id="EN-US_TOPIC_0000001180440185__cite5c53f6bd20c4405ca340dcfb915afb15151936">Virtual Private Cloud User Guide</cite></i>.</p>
<p id="EN-US_TOPIC_0000001180440185__p16541181391415">After selecting a VPC from the drop-down list, click <span class="uicontrol" id="EN-US_TOPIC_0000001180440185__uicontrol733273424119"><b>View VPC</b></span> to enter the VPC management console and view the detailed information about the VPC.</p>
<p id="EN-US_TOPIC_0000001180440185__p3541151301418">You can click <span><img id="EN-US_TOPIC_0000001180440185__image248195688125018" src="figure/en-us_image_0000001134560862.png" width="19.796119" height="17.596432" title="Click to enlarge" class="imgResize"></span> to refresh the options in the <span class="parmname" id="EN-US_TOPIC_0000001180440185__parmname571132519124912"><b>VPC</b></span> drop-down list.</p>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p95412131144">vpc-dws</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row1054151312147"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p1454151321416">Subnet</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p15411513171415">Specify a VPC subnet.</p>
<p id="EN-US_TOPIC_0000001180440185__p3541131311143">A subnet provides dedicated network resources that are isolated from other networks, improving network security.</p>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p554111135141">subnet-dws</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row85411713171419"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p3541513121416">Security Group</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p4541171351418">Specify a VPC security group.</p>
<p id="EN-US_TOPIC_0000001180440185__p1254191311411">A security group restricts access rules to enhance security when GaussDB(DWS) and other services access each other.</p>
<ul id="EN-US_TOPIC_0000001180440185__ul244311341000"><li id="EN-US_TOPIC_0000001180440185__li1344373410019">Automatic creation<p id="EN-US_TOPIC_0000001180440185__p71561188314"><a name="EN-US_TOPIC_0000001180440185__li1344373410019"></a><a name="li1344373410019"></a>If <span class="parmvalue" id="EN-US_TOPIC_0000001180440185__parmvalue1788460266105252"><b>Automatic creation</b></span> is selected, the system automatically creates a default security group. This option is selected by default.</p>
<p id="EN-US_TOPIC_0000001180440185__p754151312143">The rule of the default security group is as follows: The outbound allows all access requests, while the inbound is open only to the database port that you set to connect to the GaussDB(DWS) cluster.</p>
<p id="EN-US_TOPIC_0000001180440185__p1754111341418">The format of the default security group name is dws-&lt;<em id="EN-US_TOPIC_0000001180440185__i7958674717">Cluster_name</em>&gt;-&lt;<em id="EN-US_TOPIC_0000001180440185__i69584711719">Cluster_database_port</em>&gt;, for example, <strong id="EN-US_TOPIC_0000001180440185__b1295887276">dws-dws-demo-8000</strong>.</p>
<div class="note" id="EN-US_TOPIC_0000001180440185__note4217101371018"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000001180440185__p1221741315103">If the quotas of the security group and the security group rule are insufficient, an error message will be displayed after you submit the cluster creation application. Select an existing group and retry.</p>
</div></div>
</li><li id="EN-US_TOPIC_0000001180440185__li038784218519">Manual creation<p id="EN-US_TOPIC_0000001180440185__p1467461213432"><a name="EN-US_TOPIC_0000001180440185__li038784218519"></a><a name="li038784218519"></a>You can also log in to the VPC management console to manually create a security group. Then, go back to the page for creating data warehouse clusters, click the <span><img id="EN-US_TOPIC_0000001180440185__image1734202181112" src="figure/en-us_image_0000001180320505.png"></span> button next to the <span class="parmname" id="EN-US_TOPIC_0000001180440185__parmname15967220317"><b>Security Group</b></span> drop-down list to refresh the page, and select the new security group.</p>
<p id="EN-US_TOPIC_0000001180440185__p1483411371220">To enable the GaussDB(DWS) client to connect to the cluster, you need to add an inbound rule to the new security group to grant the access permission to the database port of the data warehouse cluster. The following is an example of an inbound rule..</p>
<ul id="EN-US_TOPIC_0000001180440185__ul834751052511"><li id="EN-US_TOPIC_0000001180440185__li3621178172520"><strong id="EN-US_TOPIC_0000001180440185__b842352706111211">Protocol</strong>: <strong id="EN-US_TOPIC_0000001180440185__b842352706111216">TCP</strong></li><li id="EN-US_TOPIC_0000001180440185__li462368122518"><strong id="EN-US_TOPIC_0000001180440185__b2418462181044">Port</strong>: <strong id="EN-US_TOPIC_0000001180440185__b40326830181048">8000</strong>. Use the database port number when you create the cluster for receiving GaussDB(DWS) client connections.</li><li id="EN-US_TOPIC_0000001180440185__li462514862519"><strong id="EN-US_TOPIC_0000001180440185__b842352706111337">Source</strong>: Select <strong id="EN-US_TOPIC_0000001180440185__b842352706111342">IP address</strong> and use the host IP address of the client host, for example, <strong id="EN-US_TOPIC_0000001180440185__b842352706111428">192.168.0.10/32</strong>.</li></ul>
<p id="EN-US_TOPIC_0000001180440185__p5421115943415">The security group of a cluster cannot be changed but can be modified. For details, see <a href="dws_03_0053.html">Modifying a Security Group</a>.</p>
</li></ul>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p165411013191418">Automatic creation</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row138021539133519"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p72904135222">Public Network Access</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p11377151183513">Specify whether users can use a client to connect to a cluster's database over the Internet. The following methods are supported:</p>
<ul id="EN-US_TOPIC_0000001180440185__ul43786513356"><li id="EN-US_TOPIC_0000001180440185__li1038285113357"><span class="parmvalue" id="EN-US_TOPIC_0000001180440185__parmvalue1938535118354"><b>Do not use</b></span>: The EIP is not required. </li><li id="EN-US_TOPIC_0000001180440185__li1938655163513"><span class="parmvalue" id="EN-US_TOPIC_0000001180440185__parmvalue93125366314"><b>Automatically assign</b></span>: Specify the EIP bandwidth, and an EIP with dedicated bandwidth will be bound to the cluster. The EIP can be used to access the cluster over the Internet. The name of an automatically assigned EIP starts with the cluster name.</li><li id="EN-US_TOPIC_0000001180440185__li6399145163511"><span class="parmvalue" id="EN-US_TOPIC_0000001180440185__parmvalue104031051193518"><b>Specify</b></span>: A specified EIP is bound to the cluster. If no available EIPs are displayed in the drop-down list, click <span class="uicontrol" id="EN-US_TOPIC_0000001180440185__uicontrol844472198201519"><b>Create EIP</b></span> to go to the <strong id="EN-US_TOPIC_0000001180440185__b84235270611450">Elastic IP</strong> page and create an EIP that satisfies your needs. You can set the bandwidth as needed.</li></ul>
<div class="note" id="EN-US_TOPIC_0000001180440185__note6900202502519"><span class="notetitle"> NOTE: </span><div class="notebody"><ul id="EN-US_TOPIC_0000001180440185__ul12484116588"><li id="EN-US_TOPIC_0000001180440185__li1484816782">If you use the EIP binding function for the first time in each project of each region, the system prompts you to create the <strong id="EN-US_TOPIC_0000001180440185__b11549162234414">DWSAccessVPC</strong> agency to authorize GaussDB(DWS) to access VPC. After the authorization is successful, GaussDB(DWS) can switch to a healthy VM when the VM bound with the EIP becomes faulty.</li><li id="EN-US_TOPIC_0000001180440185__li1546812184818">Only <span id="EN-US_TOPIC_0000001180440185__text1157872919261">cloud</span> accounts or users with <strong id="EN-US_TOPIC_0000001180440185__b16557162182613">Security Administrator</strong> permissions can create agencies by default. IAM users under an account do not have the permission for creating agencies by default. Contact a user with the permission and complete the authorization on the current page.</li><li id="EN-US_TOPIC_0000001180440185__li1349218393414"><strong id="EN-US_TOPIC_0000001180440185__b153321844204415">Do not use</strong> indicates disabling access to the cluster over the public network. After a cluster is created, if you want to access it over the public network, bind an EIP to the cluster and create a public network domain name. For details, see <a href="dws_01_0140.html#EN-US_TOPIC_0000001180320123__section14447182917335">Creating a Public Network Domain Name</a>.</li></ul>
</div></div>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p32366214217">Automatically assign</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__row68992056153010"><td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__p169001456153010">Bandwidth</p>
</td>
<td class="cellrowborder" valign="top" width="53.76%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__p490011568308">When <span class="parmname" id="EN-US_TOPIC_0000001180440185__parmname77951514142510"><b>EIP</b></span> is set to <span class="parmvalue" id="EN-US_TOPIC_0000001180440185__parmvalue97959145255"><b>Automatically assign</b></span>, you need to specify the bandwidth of the EIP, which ranges from 1 Mbit/s to 100 Mbit/s.</p>
</td>
<td class="cellrowborder" valign="top" width="24.62%" headers="mcps1.3.4.2.7.2.2.1.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__p1290019565304">50 Mbit/s</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</p></li><li id="EN-US_TOPIC_0000001180440185__li1519103255512"><span>Configure the enterprise project to which the cluster belongs. You can configure this parameter only when the Enterprise Project Management service is enabled. The default value is <strong id="EN-US_TOPIC_0000001180440185__b123293559253">default</strong>.</span><p><p id="EN-US_TOPIC_0000001180440185__p69315593582">An enterprise project facilitates project-level management and grouping of cloud resources and users.</p>
<p id="EN-US_TOPIC_0000001180440185__p149417121983">You can select the default enterprise project (<span class="parmvalue" id="EN-US_TOPIC_0000001180440185__parmvalue13693123317274"><b>default</b></span>) or other existing enterprise projects. To create an enterprise project, log in to the Enterprise Management console. For details, see the <em id="EN-US_TOPIC_0000001180440185__i193180207287">Enterprise Management User Guide</em>.</p>
<div class="note" id="EN-US_TOPIC_0000001180440185__note9947257172020"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0000001180440185__p594795772010">The enterprise project of the discount package must be the same as that of the cluster. <strong id="EN-US_TOPIC_0000001180440185__b155630185311">All projects</strong> applies to any cluster.</p>
</div></div>
</p></li><li id="EN-US_TOPIC_0000001180440185__li12731024123113"><span>Configure advanced settings. Select <strong id="EN-US_TOPIC_0000001180440185__b1786316351266">Default</strong> to keep the default values of the advanced parameters. You can also select <strong id="EN-US_TOPIC_0000001180440185__b286903511262">Custom</strong> to modify the values.</span><p><div class="fignone" id="EN-US_TOPIC_0000001180440185__fig157111357145618"><span class="figcap"><b>Figure 4 </b>Custom advanced parameters</span><br><span><img id="EN-US_TOPIC_0000001180440185__image19711115795612" src="figure/en-us_image_0000001134401072.png" height="125.63512500000002" width="455.8575" title="Click to enlarge" class="imgResize"></span></div>
<ul id="EN-US_TOPIC_0000001180440185__ul5460153173816"><li id="EN-US_TOPIC_0000001180440185__li1570215461995"><strong id="EN-US_TOPIC_0000001180440185__b6403852112816">CNs</strong><p id="EN-US_TOPIC_0000001180440185__p1966115320510">CNs receive access requests from the clients and return the execution results. In addition, a CN splits and distributes tasks to the DNs for parallel execution.</p>
<p id="EN-US_TOPIC_0000001180440185__p1895515521093">The value ranges from 2 to the number of cluster nodes minus 1. The maximum value is <strong id="EN-US_TOPIC_0000001180440185__b1752732222917">5</strong><strong id="EN-US_TOPIC_0000001180440185__b135271922122912"></strong> and the default value is <strong id="EN-US_TOPIC_0000001180440185__b37341331162910">2</strong><strong id="EN-US_TOPIC_0000001180440185__b473483182918"></strong>. In a large-scale cluster, you are advised to deploy multiple CNs.</p>
</li><li id="EN-US_TOPIC_0000001180440185__li3993151419310"><strong id="EN-US_TOPIC_0000001180440185__b139617426439">Parameter Template</strong><p id="EN-US_TOPIC_0000001180440185__p169935141135">A parameter template is a set of parameters for data warehouses. You need to select a parameter template from the drop-down list of <span class="parmname" id="EN-US_TOPIC_0000001180440185__parmname1229218305205"><b>Parameter Template</b></span> and associate it with the cluster during cluster creation. You can select the default parameter template or a customized parameter template. By default, the cluster is associated with the default database parameter template.</p>
<p id="EN-US_TOPIC_0000001180440185__p599312142318">For details about parameter templates, see <a href="dws_01_0126.html">Managing Parameter Templates</a>.</p>
</li><li id="EN-US_TOPIC_0000001180440185__li338523412310"><strong id="EN-US_TOPIC_0000001180440185__b2667174915401">Tag</strong><p id="EN-US_TOPIC_0000001180440185__p12721419233">A tag is a key-value pair used to identify a cluster. For details about the keys and values, see <a href="#EN-US_TOPIC_0000001180440185__table327331910318">Table 6</a>. By default, no tag is added to the cluster.</p>
<p id="EN-US_TOPIC_0000001180440185__p0272171913315">For more information about tags, see <a href="dws_01_0104.html">Overview</a>.</p>
<div class="tablenoborder"><a name="EN-US_TOPIC_0000001180440185__table327331910318"></a><a name="table327331910318"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001180440185__table327331910318" frame="border" border="1" rules="all"><caption><b>Table 6 </b>Tag parameters</caption><thead align="left"><tr id="EN-US_TOPIC_0000001180440185__r96d34891a81f4c108f0b18da766f4e29"><th align="left" class="cellrowborder" valign="top" width="8.799999999999999%" id="mcps1.3.4.2.9.2.2.3.4.2.4.1.1"><p id="EN-US_TOPIC_0000001180440185__a8cea735f763a4909a965a6fd986856a5">Parameter</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="77.12%" id="mcps1.3.4.2.9.2.2.3.4.2.4.1.2"><p id="EN-US_TOPIC_0000001180440185__aa2262a89ed704979aa68667fab567668">Description</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="14.08%" id="mcps1.3.4.2.9.2.2.3.4.2.4.1.3"><p id="EN-US_TOPIC_0000001180440185__a5921dbf6a4f74b49bd6e54d74c74b9ad">Example Value</p>
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0000001180440185__r066f3a7f61104bb9a31d0169f82171e8"><td class="cellrowborder" valign="top" width="8.799999999999999%" headers="mcps1.3.4.2.9.2.2.3.4.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__a8b959ff560ea49d2a83491aa498a5c75">Tag key</p>
</td>
<td class="cellrowborder" valign="top" width="77.12%" headers="mcps1.3.4.2.9.2.2.3.4.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__a15d30336113748c8a9634ad15d6de6cd">You can perform the following operations:</p>
<ul id="EN-US_TOPIC_0000001180440185__u07dffa6de8f0487483a2a8453e6bd898"><li id="EN-US_TOPIC_0000001180440185__en-us_topic_0107869068_li29381536159">Select a predefined tag key or an existing resource tag key from the drop-down list of the text box.<div class="note" id="EN-US_TOPIC_0000001180440185__n3bbfa26d35d24fbbb691cb8a1e9cac43"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000001180440185__adbf46ce5495043f1b67245f6ea6b357a">To add a predefined tag, you need to create one on TMS and select it from the drop-down list of <span class="parmname" id="EN-US_TOPIC_0000001180440185__p41c7e0f3e8124a71a9048b286923ef01"><b>Tag key</b></span>. You can click <span class="uicontrol" id="EN-US_TOPIC_0000001180440185__uicontrol3091044659410"><b>View predefined tags</b></span> to enter the <span class="wintitle" id="EN-US_TOPIC_0000001180440185__wintitle18934842319410"><b>Predefined Tags</b></span> page of TMS. Then, click <span class="uicontrol" id="EN-US_TOPIC_0000001180440185__uicontrol15645547379410"><b>Create Tag</b></span> to create a predefined tag. For more information, see <span class="filepath" id="EN-US_TOPIC_0000001180440185__filepath5586102912318"><b>Management &gt; Predefined Tags &gt; Creating Predefined Tags</b></span> in the <em id="EN-US_TOPIC_0000001180440185__i058632919319">Tag Management Service User Guide</em>.</p>
</div></div>
</li></ul>
<ul id="EN-US_TOPIC_0000001180440185__u9da028ccd7c740b38f3bc5fadea19a95"><li id="EN-US_TOPIC_0000001180440185__lc65d858b525745ed992f942d4e1211ce">Enter a tag key in the text box. The tag key can contain a maximum of 36 characters and cannot be an empty string.<p id="EN-US_TOPIC_0000001180440185__p418051717"><a name="EN-US_TOPIC_0000001180440185__lc65d858b525745ed992f942d4e1211ce"></a><a name="lc65d858b525745ed992f942d4e1211ce"></a>Only digits, letters, underscores (_), and hyphens (-) are allowed.</p>
<div class="p" id="EN-US_TOPIC_0000001180440185__en-us_topic_0107869068_p922511632019"><div class="note" id="EN-US_TOPIC_0000001180440185__nb396f4616e154dab9261db89c5b1f62c"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000001180440185__abd1c6c35f5da47048aa21644d4610e48">A key must be unique in a given cluster.</p>
</div></div>
</div>
</li></ul>
</td>
<td class="cellrowborder" valign="top" width="14.08%" headers="mcps1.3.4.2.9.2.2.3.4.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__en-us_topic_0107869068_p848641718314">key01</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001180440185__r00e87026b03445deb845078e4fcded86"><td class="cellrowborder" valign="top" width="8.799999999999999%" headers="mcps1.3.4.2.9.2.2.3.4.2.4.1.1 "><p id="EN-US_TOPIC_0000001180440185__aa5206f2aa15b4469bd846548702ade71">Tag value</p>
</td>
<td class="cellrowborder" valign="top" width="77.12%" headers="mcps1.3.4.2.9.2.2.3.4.2.4.1.2 "><p id="EN-US_TOPIC_0000001180440185__a0b3e89f5d5e94c7f936c6577fd36931c">You can perform the following operations:</p>
<ul id="EN-US_TOPIC_0000001180440185__ud6818457727d4c8bbce2b76d2f60495c"><li id="EN-US_TOPIC_0000001180440185__l0c8c9a63092848cd96c3c166f8f322f2">Select a predefined tag value or resource tag value from the drop-down list of the text box.</li><li id="EN-US_TOPIC_0000001180440185__l3fe5d829f02740b68ad6b3291d042bf6">Enter a tag value in the text box. The tag key can contain a maximum of 43 characters and cannot be an empty string.<p id="EN-US_TOPIC_0000001180440185__p9415191611175"><a name="EN-US_TOPIC_0000001180440185__l3fe5d829f02740b68ad6b3291d042bf6"></a><a name="l3fe5d829f02740b68ad6b3291d042bf6"></a>Only digits, letters, underscores (_), periods (.), and hyphens (-) are allowed.</p>
<p id="EN-US_TOPIC_0000001180440185__p14415616121716"></p>
</li></ul>
</td>
<td class="cellrowborder" valign="top" width="14.08%" headers="mcps1.3.4.2.9.2.2.3.4.2.4.1.3 "><p id="EN-US_TOPIC_0000001180440185__ad7d61724b3d547eca8a68a399342e0de">value01</p>
</td>
</tr>
</tbody>
</table>
</div>
</li></ul>
</p></li><li id="EN-US_TOPIC_0000001180440185__li36258555152115"><span>Click <span class="uicontrol" id="EN-US_TOPIC_0000001180440185__uicontrol23342050123613"><b>Create Now</b></span>. The <strong id="EN-US_TOPIC_0000001180440185__b88673379110">Confirm</strong> page is displayed.</span><p><div class="note" id="EN-US_TOPIC_0000001180440185__note543392514115"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0000001180440185__p11100461860">If the number of requested nodes, vCPU (cores), or memory (GB) exceeds the user's remaining quota, a warning dialog box is displayed, indicating that the quota is insufficient and displaying the details of the remaining quota and the current quota application. You can click <strong id="EN-US_TOPIC_0000001180440185__b946543711584">Increase quota</strong> in the warning dialog box to submit a service ticket and apply for higher node quota.</p>
<p id="EN-US_TOPIC_0000001180440185__p059217011304">For details about quotas, see <a href="dws_03_0034.html">What Is the User Quota?</a>.</p>
</div></div>
</p></li><li id="EN-US_TOPIC_0000001180440185__li47734902152356"><span>Click <strong id="EN-US_TOPIC_0000001180440185__b817385610281">Submit</strong>.</span><p><p id="EN-US_TOPIC_0000001180440185__p4318009414">After the submission is successful, the creation starts. Click <span class="uicontrol" id="EN-US_TOPIC_0000001180440185__uicontrol10558319287"><b>Back to Cluster List</b></span> to go back to the <strong id="EN-US_TOPIC_0000001180440185__b85503192816">Clusters</strong> page. The initial status of the cluster is <span class="parmvalue" id="EN-US_TOPIC_0000001180440185__parmvalue17558316282"><b>Creating</b></span>. Cluster creation takes some time. Clusters in the <span class="parmname" id="EN-US_TOPIC_0000001180440185__parmname769647905151646"><b>Available</b></span> state are ready for use.</p>
</p></li></ol>
</div>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_01_0160.html">Cluster Configuration</a></div>
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