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doc-exports/docs/dws/api-ref/ResizeClusterWithExistedNodes.html
luhuayi 007dffd756 DWS API 8.5.1_20260108 version 
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: luhuayi <luhuayi@huawei.com>
Co-committed-by: luhuayi <luhuayi@huawei.com>
2026-03-06 08:01:27 +00:00

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<a name="EN-US_TOPIC_0000002531893991"></a><a name="EN-US_TOPIC_0000002531893991"></a>
<h1 class="topictitle1">Scaling Out a Cluster with Idle Nodes</h1>
<div id="body8662426"><div class="section"><h4 class="sectiontitle">Function</h4><p>This API is used to scale out a cluster with idle nodes.</p>
</div>
<div class="section" id="EN-US_TOPIC_0000002531893991__en-us_topic_0000002340937144_atuogenerate_1"><h4 class="sectiontitle">Calling Method</h4><p>For details, see <a href="dws_02_0062.html">Calling APIs</a>.</p>
</div>
<div class="section" id="EN-US_TOPIC_0000002531893991__en-us_topic_0000002340937144_atuogenerate_2"><h4 class="sectiontitle">URI</h4><p>POST /v2/{project_id}/clusters/{cluster_id}/resize-with-existed-nodes</p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Path Parameters</caption><thead align="left"><tr><th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.3.3.2.5.1.1"><p>Parameter</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.3.3.2.5.1.2"><p>Mandatory</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.3.3.2.5.1.3"><p>Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="40%" id="mcps1.3.3.3.2.5.1.4"><p>Description</p>
</th>
</tr>
</thead>
<tbody><tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.3.2.5.1.1 "><p>project_id</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.3.2.5.1.2 "><p>Yes</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.3.2.5.1.3 "><p>String</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.3.3.2.5.1.4 "><p><strong>Definition</strong></p>
<p>Project ID. To obtain the value, see <a href="dws_02_0011.html">Obtaining a Project ID</a>.</p>
<p><strong>Constraints</strong></p>
<p>N/A</p>
<p><strong>Range</strong></p>
<p>N/A</p>
<p><strong>Default Value</strong></p>
<p>N/A</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.3.2.5.1.1 "><p>cluster_id</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.3.2.5.1.2 "><p>Yes</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.3.3.2.5.1.3 "><p>String</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.3.3.2.5.1.4 "><p><strong>Definition</strong></p>
<p>Cluster ID. For details about how to obtain the value, see <a href="dws_02_00068.html">Obtaining the Cluster ID</a>.</p>
<p><strong>Constraints</strong></p>
<p>N/A</p>
<p><strong>Range</strong></p>
<p>N/A</p>
<p><strong>Default Value</strong></p>
<p>N/A</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="section"><h4 class="sectiontitle">Request Parameters</h4>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000002531893991__en-us_topic_0000002340937144_request_ResizeClusterWithExistedNodesRequestBody" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Request body parameters</caption><thead align="left"><tr><th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.2.2.5.1.1"><p>Parameter</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.2.2.5.1.2"><p>Mandatory</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.2.2.5.1.3"><p>Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="40%" id="mcps1.3.4.2.2.5.1.4"><p>Description</p>
</th>
</tr>
</thead>
<tbody><tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.1 "><p>scale_out</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.2 "><p>Yes</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.3 "><p><a href="#EN-US_TOPIC_0000002531893991__en-us_topic_0000002340937144_request_ScaleOut">ScaleOut</a> object</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.4.2.2.5.1.4 "><p><strong>Definition</strong></p>
<p>Scale-out objects</p>
<p><strong>Constraints</strong></p>
<p>N/A</p>
<p><strong>Range</strong></p>
<p>N/A</p>
<p><strong>Default Value</strong></p>
<p>N/A</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.1 "><p>force_backup</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.2 "><p>No</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.3 "><p>Boolean</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.4.2.2.5.1.4 "><p><strong>Definition</strong></p>
<p>Whether to forcibly back up data.</p>
<p><strong>Constraints</strong></p>
<p>N/A</p>
<p><strong>Range</strong></p>
<p>N/A</p>
<p><strong>Default Value</strong></p>
<p>N/A</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.1 "><p>mode</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.2 "><p>No</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.3 "><p>String</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.4.2.2.5.1.4 "><p><strong>Definition</strong></p>
<p>Scale-out mode. If this parameter is not specified, the offline read-only mode is used by default.</p>
<p><strong>Constraints</strong></p>
<p>The online mode is not supported by most clusters of earlier versions. To use the mode, contact O&amp;M personnel.</p>
<p><strong>Range</strong></p>
<p><strong>read-only</strong>: offline mode</p>
<p><strong>insert</strong>: online mode</p>
<p><strong>Default Value</strong></p>
<p>N/A</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.1 "><p>logical_cluster_name</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.2 "><p>No</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.3 "><p>String</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.4.2.2.5.1.4 "><p><strong>Definition</strong></p>
<p>Logical cluster name.</p>
<p><strong>Constraints</strong></p>
<p>N/A</p>
<p><strong>Range</strong></p>
<p>In non-logical cluster mode, this parameter is left blank. In logical cluster mode, the default value is <strong>elastic_group</strong>.</p>
<p><strong>Default Value</strong></p>
<p>elastic_group</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.1 "><p>expand_with_existed_node</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.2 "><p>Yes</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.3 "><p>Boolean</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.4.2.2.5.1.4 "><p><strong>Definition</strong></p>
<p>Whether to use added idle nodes for scale-out.</p>
<p><strong>Constraints</strong></p>
<p>N/A</p>
<p><strong>Range</strong></p>
<p><strong>true</strong>: Idle nodes are used for scale-out.</p>
<p><strong>false</strong>: Idle nodes are not used for scale-out.</p>
<p><strong>Default Value</strong></p>
<p>false</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.1 "><p>auto_redistribute</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.2 "><p>No</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.3 "><p>Boolean</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.4.2.2.5.1.4 "><p><strong>Definition</strong></p>
<p>Whether to automatically start redistribution after scale-out. The default value is <strong>true</strong>.</p>
<p><strong>Constraints</strong></p>
<p>N/A</p>
<p><strong>Range</strong></p>
<p>N/A</p>
<p><strong>Default Value</strong></p>
<p>true</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.1 "><p>redis_conf</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.2 "><p>No</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.2.5.1.3 "><p><a href="#EN-US_TOPIC_0000002531893991__en-us_topic_0000002340937144_request_RedisConfReq">RedisConfReq</a> object</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.4.2.2.5.1.4 "><p><strong>Definition</strong></p>
<p>Redistribution configuration information.</p>
<p><strong>Constraints</strong></p>
<p>N/A</p>
<p><strong>Range</strong></p>
<p>N/A</p>
<p><strong>Default Value</strong></p>
<p>N/A</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="tablenoborder"><a name="EN-US_TOPIC_0000002531893991__en-us_topic_0000002340937144_request_ScaleOut"></a><a name="en-us_topic_0000002340937144_request_ScaleOut"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000002531893991__en-us_topic_0000002340937144_request_ScaleOut" frame="border" border="1" rules="all"><caption><b>Table 3 </b>ScaleOut</caption><thead align="left"><tr><th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.3.2.5.1.1"><p>Parameter</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.3.2.5.1.2"><p>Mandatory</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.3.2.5.1.3"><p>Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="40%" id="mcps1.3.4.3.2.5.1.4"><p>Description</p>
</th>
</tr>
</thead>
<tbody><tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.3.2.5.1.1 "><p>count</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.3.2.5.1.2 "><p>Yes</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.3.2.5.1.3 "><p>Integer</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.4.3.2.5.1.4 "><p><strong>Definition</strong></p>
<p>Number of nodes to be added.</p>
<p><strong>Range</strong></p>
<p>Greater than or equal to <strong>3</strong></p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.3.2.5.1.1 "><p>subnet_id</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.3.2.5.1.2 "><p>No</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.3.2.5.1.3 "><p>String</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.4.3.2.5.1.4 "><p><strong>Definition</strong></p>
<p>Subnet ID.</p>
<p><strong>Range</strong></p>
<p>The value is a valid subnet ID in the same VPC.</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="tablenoborder"><a name="EN-US_TOPIC_0000002531893991__en-us_topic_0000002340937144_request_RedisConfReq"></a><a name="en-us_topic_0000002340937144_request_RedisConfReq"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000002531893991__en-us_topic_0000002340937144_request_RedisConfReq" frame="border" border="1" rules="all"><caption><b>Table 4 </b>RedisConfReq</caption><thead align="left"><tr><th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.4.2.5.1.1"><p>Parameter</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.4.2.5.1.2"><p>Mandatory</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="20%" id="mcps1.3.4.4.2.5.1.3"><p>Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="40%" id="mcps1.3.4.4.2.5.1.4"><p>Description</p>
</th>
</tr>
</thead>
<tbody><tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.5.1.1 "><p>redis_mode</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.5.1.2 "><p>Yes</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.5.1.3 "><p>String</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.4.4.2.5.1.4 "><p><strong>Definition</strong></p>
<p>Redistribution mode. The impact on services varies depending on the mode. You are advised to contact O&amp;M personnel for evaluation before changing the mode.</p>
<p><strong>Constraints</strong></p>
<p>The value must be a valid DWS cluster ID.</p>
<p><strong>Range</strong></p>
<p><strong>offline</strong></p>
<p><strong>online</strong></p>
<p><strong>Default Value</strong></p>
<p><strong>offline</strong></p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.5.1.1 "><p>parallel_jobs</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.5.1.2 "><p>Yes</p>
</td>
<td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.4.2.5.1.3 "><p>Integer</p>
</td>
<td class="cellrowborder" valign="top" width="40%" headers="mcps1.3.4.4.2.5.1.4 "><p><strong>Definition</strong></p>
<p>Number of concurrent jobs. The default value is <strong>4</strong>.</p>
<p><strong>Constraints</strong></p>
<p>N/A</p>
<p><strong>Range</strong></p>
<p><strong>1</strong> to <strong>200</strong></p>
<p><strong>Default Value</strong></p>
<p>4</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="section"><h4 class="sectiontitle">Response Parameters</h4><p><strong>Status code: 200</strong></p>
<p>Request for adding an idle node submitted.</p>
<p>None</p>
</div>
<div class="section"><h4 class="sectiontitle">Example Requests</h4><p>Scale out a cluster with idle nodes.</p>
<pre class="screen">POST https://{Endpoint}/v2/89cd04f168b84af6be287f71730fdb4b/clusters/4ca46bf1-5c61-48ff-b4f3-0ad4e5e3ba90/resize-with-existed-nodes
{
"scale_out" : {
"count" : 3
},
"expand_with_existed_node" : true,
"auto_redistribute" : true,
"redis_conf" : {
"redis_mode" : "offLine",
"parallel_jobs" : 4
}
}</pre>
</div>
<div class="section"><h4 class="sectiontitle">Example Responses</h4><p>None</p>
</div>
<div class="section"><h4 class="sectiontitle">Status Codes</h4>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000002531893991__en-us_topic_0000002340937144_status_code" frame="border" border="1" rules="all"><thead align="left"><tr><th align="left" class="cellrowborder" valign="top" width="15%" id="mcps1.3.8.2.1.3.1.1"><p>Status Code</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="85%" id="mcps1.3.8.2.1.3.1.2"><p>Description</p>
</th>
</tr>
</thead>
<tbody><tr><td class="cellrowborder" valign="top" width="15%" headers="mcps1.3.8.2.1.3.1.1 "><p>200</p>
</td>
<td class="cellrowborder" valign="top" width="85%" headers="mcps1.3.8.2.1.3.1.2 "><p>Request for adding an idle node submitted.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="15%" headers="mcps1.3.8.2.1.3.1.1 "><p>400</p>
</td>
<td class="cellrowborder" valign="top" width="85%" headers="mcps1.3.8.2.1.3.1.2 "><p>Request error.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="15%" headers="mcps1.3.8.2.1.3.1.1 "><p>401</p>
</td>
<td class="cellrowborder" valign="top" width="85%" headers="mcps1.3.8.2.1.3.1.2 "><p>Authentication failed.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="15%" headers="mcps1.3.8.2.1.3.1.1 "><p>403</p>
</td>
<td class="cellrowborder" valign="top" width="85%" headers="mcps1.3.8.2.1.3.1.2 "><p>You do not have required permissions.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="15%" headers="mcps1.3.8.2.1.3.1.1 "><p>404</p>
</td>
<td class="cellrowborder" valign="top" width="85%" headers="mcps1.3.8.2.1.3.1.2 "><p>No resources found.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="15%" headers="mcps1.3.8.2.1.3.1.1 "><p>500</p>
</td>
<td class="cellrowborder" valign="top" width="85%" headers="mcps1.3.8.2.1.3.1.2 "><p>Internal server error.</p>
</td>
</tr>
<tr><td class="cellrowborder" valign="top" width="15%" headers="mcps1.3.8.2.1.3.1.1 "><p>503</p>
</td>
<td class="cellrowborder" valign="top" width="85%" headers="mcps1.3.8.2.1.3.1.2 "><p>Service unavailable.</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_02_0026.html">Node Change</a></div>
</div>
</div>
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