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Reviewed-by: Pristromskaia, Margarita <margarita.pristromskaia@t-systems.com> Co-authored-by: guoyanyan <guoyanyan3@huawei.com> Co-committed-by: guoyanyan <guoyanyan3@huawei.com>
204 lines
23 KiB
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204 lines
23 KiB
HTML
<a name="as_pro_0002"></a><a name="as_pro_0002"></a>
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<h1 class="topictitle1">Instance Lifecycle</h1>
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<div id="body8662426"><p id="as_pro_0002__en-us_topic_0190954031_p5902694020366">An ECS instance in an AS group goes through different statuses from its creation to its removal.</p>
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<div class="p" id="as_pro_0002__en-us_topic_0190954031_p50838910">The instance status changes as shown in <a href="#as_pro_0002__en-us_topic_0190954031_fig9892349365">Figure 1</a> if you have not added a lifecycle hook to the AS group.<div class="fignone" id="as_pro_0002__en-us_topic_0190954031_fig9892349365"><a name="as_pro_0002__en-us_topic_0190954031_fig9892349365"></a><a name="en-us_topic_0190954031_fig9892349365"></a><span class="figcap"><b>Figure 1 </b>Instance lifecycle</span><br><span><img id="as_pro_0002__image31461613201815" src="en-us_image_0200326047.png"></span></div>
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</div>
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<p id="as_pro_0002__en-us_topic_0190954031_p3213880395544">When trigger condition 2 or 4 is met, the system autonomously puts instances into the next status.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="as_pro_0002__table1927111172313" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Instance statuses</caption><thead align="left"><tr id="as_pro_0002__row49279111238"><th align="left" class="cellrowborder" valign="top" width="14.888511148885112%" id="mcps1.3.4.2.5.1.1"><p id="as_pro_0002__p15928411132315"><strong id="as_pro_0002__b120038348">Status</strong></p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="17.328267173282672%" id="mcps1.3.4.2.5.1.2"><p id="as_pro_0002__p19928171182316"><strong id="as_pro_0002__b1700654869">Sub-status</strong></p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="31.656834316568343%" id="mcps1.3.4.2.5.1.3"><p id="as_pro_0002__p09301811172313"><strong id="as_pro_0002__b1265907360">Status Description</strong></p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="36.12638736126387%" id="mcps1.3.4.2.5.1.4"><p id="as_pro_0002__p2931211122317"><strong id="as_pro_0002__b805861039">Trigger Condition</strong></p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="as_pro_0002__row11931161118233"><td class="cellrowborder" valign="top" width="14.888511148885112%" headers="mcps1.3.4.2.5.1.1 "><p id="as_pro_0002__p7932131132319">Initial</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.328267173282672%" headers="mcps1.3.4.2.5.1.2 "><p id="as_pro_0002__p79324114234">None</p>
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</td>
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<td class="cellrowborder" valign="top" width="31.656834316568343%" headers="mcps1.3.4.2.5.1.3 "><p id="as_pro_0002__p1593211116238">The instance has not been added to the AS group.</p>
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</td>
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<td class="cellrowborder" valign="top" width="36.12638736126387%" headers="mcps1.3.4.2.5.1.4 "><p id="as_pro_0002__p149324114234">N/A</p>
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</td>
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</tr>
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<tr id="as_pro_0002__row1693271119237"><td class="cellrowborder" valign="top" width="14.888511148885112%" headers="mcps1.3.4.2.5.1.1 "><p id="as_pro_0002__p129324111233">Adding to AS group</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.328267173282672%" headers="mcps1.3.4.2.5.1.2 "><p id="as_pro_0002__p19320116236">Add the instance.</p>
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</td>
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<td class="cellrowborder" valign="top" width="31.656834316568343%" headers="mcps1.3.4.2.5.1.3 "><p id="as_pro_0002__p593291122311">When trigger condition 1 is met, AS adds the instance to expand the AS group capacity.</p>
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</td>
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<td class="cellrowborder" valign="top" width="36.12638736126387%" headers="mcps1.3.4.2.5.1.4 "><div class="p" id="as_pro_0002__p29918420254">The instance status changes to <strong id="as_pro_0002__b1439312923610">Adding to AS group</strong> when any of the following conditions is met:<ul id="as_pro_0002__ul18991045251"><li id="as_pro_0002__li19469144913374">You manually increase the expected number of instances of the AS group.</li><li id="as_pro_0002__li89912410253">The system automatically expands the AS group capacity.</li><li id="as_pro_0002__li179917413253">You manually add instances to the AS group.</li></ul>
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</div>
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</td>
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</tr>
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<tr id="as_pro_0002__row993218113234"><td class="cellrowborder" valign="top" width="14.888511148885112%" headers="mcps1.3.4.2.5.1.1 "><p id="as_pro_0002__p67755414117">Adding to AS group</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.328267173282672%" headers="mcps1.3.4.2.5.1.2 "><p id="as_pro_0002__p593210118238">(Optional) Associate the instance with a load balancing listener.</p>
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</td>
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<td class="cellrowborder" valign="top" width="31.656834316568343%" headers="mcps1.3.4.2.5.1.3 "><p id="as_pro_0002__p1293311132314">When trigger condition 1 is met, AS associates the created instance with the load balancing listener.</p>
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</td>
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<td class="cellrowborder" valign="top" width="36.12638736126387%" headers="mcps1.3.4.2.5.1.4 "><div class="p" id="as_pro_0002__p1657156132514">The instance status changes to <strong id="as_pro_0002__b512494413367">Adding to AS group</strong> when any of the following conditions is met:<ul id="as_pro_0002__ul465776182517"><li id="as_pro_0002__li17315183194110">You manually change the expected number of instances of the AS group.</li><li id="as_pro_0002__li206571666253">The system automatically expands the AS group capacity.</li><li id="as_pro_0002__li1865711618256">You manually add instances to the AS group.</li></ul>
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</div>
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</td>
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</tr>
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<tr id="as_pro_0002__row11933111142316"><td class="cellrowborder" valign="top" width="14.888511148885112%" headers="mcps1.3.4.2.5.1.1 "><p id="as_pro_0002__p4933101111238">Enabled</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.328267173282672%" headers="mcps1.3.4.2.5.1.2 "><p id="as_pro_0002__p993310115237">None</p>
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</td>
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<td class="cellrowborder" valign="top" width="31.656834316568343%" headers="mcps1.3.4.2.5.1.3 "><p id="as_pro_0002__p1093311117232">The instance is added to the AS group and starts to process service traffic.</p>
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</td>
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<td class="cellrowborder" valign="top" width="36.12638736126387%" headers="mcps1.3.4.2.5.1.4 "><p id="as_pro_0002__p2933181115234">N/A</p>
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</td>
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</tr>
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<tr id="as_pro_0002__row593341152311"><td class="cellrowborder" valign="top" width="14.888511148885112%" headers="mcps1.3.4.2.5.1.1 "><p id="as_pro_0002__p1193315116231">Removing from AS group</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.328267173282672%" headers="mcps1.3.4.2.5.1.2 "><p id="as_pro_0002__p1693351118231">(Optional) Disassociate the instance from the load balancing listener.</p>
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</td>
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<td class="cellrowborder" valign="top" width="31.656834316568343%" headers="mcps1.3.4.2.5.1.3 "><p id="as_pro_0002__p093461162315">When trigger condition 3 is met, the AS group starts to reduce resources and disassociate the instance from the load balancing listener.</p>
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</td>
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<td class="cellrowborder" valign="top" width="36.12638736126387%" headers="mcps1.3.4.2.5.1.4 "><div class="p" id="as_pro_0002__p1323365211271">The instance status changes from <strong id="as_pro_0002__b10881135314320">Enabled</strong> to <strong id="as_pro_0002__b18881453134320">Removing from AS group</strong> when any of the following conditions is met:<ul id="as_pro_0002__ul82331252142713"><li id="as_pro_0002__li1275875119453">You manually decrease the expected number of instances of the AS group.</li><li id="as_pro_0002__li5233105218272">The system automatically reduces the AS group capacity.</li><li id="as_pro_0002__li122331352122719">A health check shows that an enabled instance is unhealthy, and the system removes it from the AS group.</li><li id="as_pro_0002__li16234185210275">You manually remove instances from the AS group.</li></ul>
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</div>
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</td>
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</tr>
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<tr id="as_pro_0002__row1593411142316"><td class="cellrowborder" valign="top" width="14.888511148885112%" headers="mcps1.3.4.2.5.1.1 "><p id="as_pro_0002__p1395771334115">Removing from AS group</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.328267173282672%" headers="mcps1.3.4.2.5.1.2 "><p id="as_pro_0002__p10934211192311">Remove the instance.</p>
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</td>
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<td class="cellrowborder" valign="top" width="31.656834316568343%" headers="mcps1.3.4.2.5.1.3 "><p id="as_pro_0002__p15934011142318">After the instance is unbound from the load balancing listener, it is removed from the AS group.</p>
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</td>
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<td class="cellrowborder" valign="top" width="36.12638736126387%" headers="mcps1.3.4.2.5.1.4 "><div class="p" id="as_pro_0002__p6610195417279">The instance status changes from <strong id="as_pro_0002__b19475201716451">Enabled</strong> to <strong id="as_pro_0002__b19475131744516">Removing from AS group</strong> when any of the following conditions is met:<ul id="as_pro_0002__ul1461055472714"><li id="as_pro_0002__li169511915511">You manually decrease the expected number of instances of the AS group.</li><li id="as_pro_0002__li18706169105511">The system automatically reduces the AS group capacity.</li><li id="as_pro_0002__li196101254192711">A health check shows that an enabled instance is unhealthy, and the system removes it from the AS group.</li><li id="as_pro_0002__li1561045432715">You manually remove instances from the AS group.</li></ul>
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</div>
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</td>
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</tr>
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<tr id="as_pro_0002__row1593413115239"><td class="cellrowborder" valign="top" width="14.888511148885112%" headers="mcps1.3.4.2.5.1.1 "><p id="as_pro_0002__p1993417113239">Removed</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.328267173282672%" headers="mcps1.3.4.2.5.1.2 "><p id="as_pro_0002__p8934161152318">None</p>
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</td>
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<td class="cellrowborder" valign="top" width="31.656834316568343%" headers="mcps1.3.4.2.5.1.3 "><p id="as_pro_0002__p15934311182312">The instance lifecycle in the AS group ends.</p>
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</td>
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<td class="cellrowborder" valign="top" width="36.12638736126387%" headers="mcps1.3.4.2.5.1.4 "><p id="as_pro_0002__p13934121172318">None</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p id="as_pro_0002__en-us_topic_0190954031_p46766121172216">When an ECS instance is added to an AS group manually or through a scaling action, it goes through the <strong id="as_pro_0002__en-us_topic_0190954031_b842352706171636">Adding to AS group</strong>, <strong id="as_pro_0002__en-us_topic_0190954031_b842352706171644">Enabled</strong>, and <strong id="as_pro_0002__en-us_topic_0190954031_b842352706171654">Removing from AS group</strong> statuses. Then it is finally removed from the AS group.</p>
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<div class="p" id="as_pro_0002__en-us_topic_0190954031_p50022097153640">If you have added a lifecycle hook to the AS group, the instance statuses change as shown in <a href="#as_pro_0002__en-us_topic_0190954031_fig32791162165412">Figure 2</a>. When a scale-out or scale-in event occurs in the AS group, the required instances are suspended by the lifecycle hook and remain in the wait status until the timeout period ends or you manually call back the instances. You can perform custom operations on the instances when they are in the wait status. For example, you can install or configure software on an instance before it is added to the AS group or download log files from an instance before it is removed.<div class="fignone" id="as_pro_0002__en-us_topic_0190954031_fig32791162165412"><a name="as_pro_0002__en-us_topic_0190954031_fig32791162165412"></a><a name="en-us_topic_0190954031_fig32791162165412"></a><span class="figcap"><b>Figure 2 </b>Instance lifecycle</span><br><span><img id="as_pro_0002__image19973195891917" src="en-us_image_0200327117.png"></span></div>
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</div>
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<p id="as_pro_0002__en-us_topic_0190954031_p58847832123532">Under trigger condition 2, 4, 6, or 8, the system automatically changes the instance status.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="as_pro_0002__table1852055816300" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Instance statuses</caption><thead align="left"><tr id="as_pro_0002__row1552965816309"><th align="left" class="cellrowborder" valign="top" width="17.32%" id="mcps1.3.8.2.5.1.1"><p id="as_pro_0002__p752975811308"><strong id="as_pro_0002__b1845200090">Status</strong></p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="17.7%" id="mcps1.3.8.2.5.1.2"><p id="as_pro_0002__p2529185843016"><strong id="as_pro_0002__b1133146102">Sub-status</strong></p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="29.549999999999997%" id="mcps1.3.8.2.5.1.3"><p id="as_pro_0002__p1552920583306"><strong id="as_pro_0002__b1625418869">Status Description</strong></p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="35.43%" id="mcps1.3.8.2.5.1.4"><p id="as_pro_0002__p3530158183019"><strong id="as_pro_0002__b61053589">Trigger Description</strong></p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="as_pro_0002__row1253065823013"><td class="cellrowborder" valign="top" width="17.32%" headers="mcps1.3.8.2.5.1.1 "><p id="as_pro_0002__p12530558103018">Initial</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.7%" headers="mcps1.3.8.2.5.1.2 "><p id="as_pro_0002__p253015813306">None</p>
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</td>
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<td class="cellrowborder" valign="top" width="29.549999999999997%" headers="mcps1.3.8.2.5.1.3 "><p id="as_pro_0002__p7530115843010">The instance has not been added to the AS group.</p>
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</td>
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<td class="cellrowborder" valign="top" width="35.43%" headers="mcps1.3.8.2.5.1.4 "><p id="as_pro_0002__p1253015816309">N/A</p>
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</td>
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</tr>
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<tr id="as_pro_0002__row5531958163015"><td class="cellrowborder" valign="top" width="17.32%" headers="mcps1.3.8.2.5.1.1 "><p id="as_pro_0002__p1753116587303">Adding to AS group</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.7%" headers="mcps1.3.8.2.5.1.2 "><p id="as_pro_0002__p35321058143010">Add the instance.</p>
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</td>
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<td class="cellrowborder" valign="top" width="29.549999999999997%" headers="mcps1.3.8.2.5.1.3 "><p id="as_pro_0002__p2053275893010">When trigger condition 1 is met, AS adds the instance to expand the AS group capacity.</p>
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</td>
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<td class="cellrowborder" valign="top" width="35.43%" headers="mcps1.3.8.2.5.1.4 "><div class="p" id="as_pro_0002__p20798185810329">The instance status will be changed to <strong id="as_pro_0002__b13128174410367">Adding to AS group</strong> when any of the following conditions is met:<ul id="as_pro_0002__ul2798058103214"><li id="as_pro_0002__li1416710391707">You manually change the expected number of instances of the AS group.</li><li id="as_pro_0002__li1117317391301">The system automatically reduces the AS group capacity.</li><li id="as_pro_0002__li1079813588323">You manually add instances to the AS group.</li></ul>
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</div>
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</td>
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</tr>
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<tr id="as_pro_0002__row185321458163010"><td class="cellrowborder" valign="top" width="17.32%" headers="mcps1.3.8.2.5.1.1 "><p id="as_pro_0002__p8533195810304">Wait (Adding to AS group)</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.7%" headers="mcps1.3.8.2.5.1.2 "><p id="as_pro_0002__p5533135833012">None</p>
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</td>
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<td class="cellrowborder" valign="top" width="29.549999999999997%" headers="mcps1.3.8.2.5.1.3 "><p id="as_pro_0002__p6533105813019">The lifecycle hook suspends the instance that is being added to the AS group and puts the instance into a wait status.</p>
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</td>
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<td class="cellrowborder" valign="top" width="35.43%" headers="mcps1.3.8.2.5.1.4 "><div class="p" id="as_pro_0002__p1533195813301">The instance status is changed from <strong id="as_pro_0002__b1707991295">Wait (Adding to AS group)</strong> to <strong id="as_pro_0002__b307602569">Adding to AS group</strong> when either of the following occurs:<ul id="as_pro_0002__ul1853375823017"><li id="as_pro_0002__li2534185873015">The default callback action is performed.</li><li id="as_pro_0002__li95341158163013">You manually perform the callback action.</li></ul>
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</div>
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</td>
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</tr>
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<tr id="as_pro_0002__row45345585304"><td class="cellrowborder" valign="top" width="17.32%" headers="mcps1.3.8.2.5.1.1 "><p id="as_pro_0002__p453415815305">Adding to AS group</p>
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<p id="as_pro_0002__p17534115812305"></p>
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</td>
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<td class="cellrowborder" valign="top" width="17.7%" headers="mcps1.3.8.2.5.1.2 "><p id="as_pro_0002__p15534145810305">(Optional) Associate the instance with a load balancing listener.</p>
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</td>
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<td class="cellrowborder" valign="top" width="29.549999999999997%" headers="mcps1.3.8.2.5.1.3 "><p id="as_pro_0002__p16535145815305">When trigger condition 3 is met, AS associates the instance with the load balancing listener.</p>
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</td>
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<td class="cellrowborder" valign="top" width="35.43%" headers="mcps1.3.8.2.5.1.4 "><div class="p" id="as_pro_0002__p75383412330">The instance status is changed from <strong id="as_pro_0002__b07781929951">Wait (Adding to AS group)</strong> to <strong id="as_pro_0002__b1477917291551">Adding to AS group</strong> when either of the following occurs:<ul id="as_pro_0002__ul13538349332"><li id="as_pro_0002__li2053133493313">The default callback action is performed.</li><li id="as_pro_0002__li125333453310">You manually perform the callback action.</li></ul>
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</div>
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</td>
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</tr>
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<tr id="as_pro_0002__row3535125843015"><td class="cellrowborder" valign="top" width="17.32%" headers="mcps1.3.8.2.5.1.1 "><p id="as_pro_0002__p7536125814309">Enabled</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.7%" headers="mcps1.3.8.2.5.1.2 "><p id="as_pro_0002__p7536135818303">None</p>
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</td>
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<td class="cellrowborder" valign="top" width="29.549999999999997%" headers="mcps1.3.8.2.5.1.3 "><p id="as_pro_0002__p15538165813308">The instance is added to the AS group and starts to process service traffic.</p>
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</td>
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<td class="cellrowborder" valign="top" width="35.43%" headers="mcps1.3.8.2.5.1.4 "><div class="p" id="as_pro_0002__p1653825813306">The instance status changes from <strong id="as_pro_0002__b1341010581267">Enabled</strong> to <strong id="as_pro_0002__b241017581465">Removing from AS group</strong> when any of the following occurs:<ul id="as_pro_0002__ul35382582304"><li id="as_pro_0002__li3377928589">You manually change the expected number of instances of the AS group.</li><li id="as_pro_0002__li237120281982">The system automatically reduces the AS group capacity.</li><li id="as_pro_0002__li753845833019">A health check shows that an enabled instance is unhealthy, and the system removes it from the AS group.</li><li id="as_pro_0002__li185396588307">You manually remove instances from the AS group.</li></ul>
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</div>
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</td>
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</tr>
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<tr id="as_pro_0002__row1953955810304"><td class="cellrowborder" valign="top" width="17.32%" headers="mcps1.3.8.2.5.1.1 "><p id="as_pro_0002__p18539858153016">Removing from AS group</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.7%" headers="mcps1.3.8.2.5.1.2 "><p id="as_pro_0002__p55391858153013">(Optional) Disassociate the instance from the load balancing listener.</p>
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</td>
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<td class="cellrowborder" valign="top" width="29.549999999999997%" headers="mcps1.3.8.2.5.1.3 "><p id="as_pro_0002__p9539115818305">When trigger condition 5 is met, the AS group starts to reduce resources and disassociate the instance from the load balancing listener.</p>
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</td>
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<td class="cellrowborder" valign="top" width="35.43%" headers="mcps1.3.8.2.5.1.4 "><div class="p" id="as_pro_0002__p12102125918336">The instance status changes from <strong id="as_pro_0002__b147201589717">Enabled</strong> to <strong id="as_pro_0002__b11720138078">Removing from AS group</strong> when any of the following occurs:<ul id="as_pro_0002__ul8102459113312"><li id="as_pro_0002__li1331153412111">You manually change the expected number of instances of the AS group.</li><li id="as_pro_0002__li637734411">The system automatically reduces the AS group capacity.</li><li id="as_pro_0002__li1510285983317">A health check shows that an enabled instance is unhealthy, and the system removes it from the AS group.</li><li id="as_pro_0002__li1310355919339">You manually remove instances from the AS group.</li></ul>
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</div>
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</td>
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</tr>
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<tr id="as_pro_0002__row05395581302"><td class="cellrowborder" valign="top" width="17.32%" headers="mcps1.3.8.2.5.1.1 "><p id="as_pro_0002__p5540195812304">Wait (Removing from AS group)</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.7%" headers="mcps1.3.8.2.5.1.2 "><p id="as_pro_0002__p1954019583306">None</p>
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</td>
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<td class="cellrowborder" valign="top" width="29.549999999999997%" headers="mcps1.3.8.2.5.1.3 "><p id="as_pro_0002__p1554012586303">The lifecycle hook suspends the instance that is being removed from the AS group and puts the instance into a wait status.</p>
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</td>
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<td class="cellrowborder" valign="top" width="35.43%" headers="mcps1.3.8.2.5.1.4 "><div class="p" id="as_pro_0002__p154025833015">The instance status is changed from <strong id="as_pro_0002__b1223492783">Wait (Removing from AS group)</strong> to <strong id="as_pro_0002__b1879700937">Removing from AS group</strong> when either of the following occurs:<ul id="as_pro_0002__ul254019581301"><li id="as_pro_0002__li1154020580307">The default callback action is performed.</li><li id="as_pro_0002__li2540115816302">You manually perform the callback action.</li></ul>
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</div>
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</td>
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</tr>
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<tr id="as_pro_0002__row12540155833016"><td class="cellrowborder" valign="top" width="17.32%" headers="mcps1.3.8.2.5.1.1 "><p id="as_pro_0002__p75414582306">Removing from AS group</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.7%" headers="mcps1.3.8.2.5.1.2 "><p id="as_pro_0002__p19541258203010">Remove the instance.</p>
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</td>
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<td class="cellrowborder" valign="top" width="29.549999999999997%" headers="mcps1.3.8.2.5.1.3 "><p id="as_pro_0002__p1854165812300">When trigger condition 7 is met, AS removes the instance from the AS group.</p>
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</td>
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<td class="cellrowborder" valign="top" width="35.43%" headers="mcps1.3.8.2.5.1.4 "><div class="p" id="as_pro_0002__p195126514336">The instance status changes from <strong id="as_pro_0002__b142679177100">Wait (Removing from AS group)</strong> to <strong id="as_pro_0002__b14267917191011">Removing from AS group</strong> when either of the following occurs:<ul id="as_pro_0002__ul8512145163318"><li id="as_pro_0002__li1951295143315">The default callback action is performed.</li><li id="as_pro_0002__li165121510338">You manually perform the callback action.</li></ul>
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</div>
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</td>
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</tr>
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<tr id="as_pro_0002__row15541145843018"><td class="cellrowborder" valign="top" width="17.32%" headers="mcps1.3.8.2.5.1.1 "><p id="as_pro_0002__p3541155810302">Removed</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.7%" headers="mcps1.3.8.2.5.1.2 "><p id="as_pro_0002__p16541758153019">None</p>
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</td>
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<td class="cellrowborder" valign="top" width="29.549999999999997%" headers="mcps1.3.8.2.5.1.3 "><p id="as_pro_0002__p2541258103018">The instance lifecycle in the AS group ends.</p>
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</td>
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<td class="cellrowborder" valign="top" width="35.43%" headers="mcps1.3.8.2.5.1.4 "><p id="as_pro_0002__p954125883016">None</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p id="as_pro_0002__en-us_topic_0190954031_p10149883173117">Instances are added to an AS group manually or through a scaling action. Then, they go through the <strong id="as_pro_0002__en-us_topic_0190954031_b842352706144626">Adding to AS group</strong>, <strong id="as_pro_0002__en-us_topic_0190954031_b842352706144644">Wait (Adding to AS group)</strong>, <strong id="as_pro_0002__en-us_topic_0190954031_b842352706144712">Adding to AS group</strong>, <strong id="as_pro_0002__en-us_topic_0190954031_b842352706144722">Enabled</strong>, <strong id="as_pro_0002__en-us_topic_0190954031_b842352706144727">Removing from AS group</strong>, <strong id="as_pro_0002__en-us_topic_0190954031_b842352706144739">Wait (Removing from the AS group)</strong>, and <strong id="as_pro_0002__en-us_topic_0190954031_b84235270614480">Removing from AS group</strong> and are finally removed from the AS group.</p>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="en-us_topic_0042018361.html">Service Overview</a></div>
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</div>
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</div>
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