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class="vp-sidebar-title">关于IoTDB</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-heading clickable active" type="button"><!----><span class="vp-sidebar-title">快速上手</span><span class="vp-arrow down"></span></button><ul class="vp-sidebar-links"><li><!--[--><a aria-label="单机版" class="vp-link nav-link vp-sidebar-link vp-sidebar-page nav-link vp-sidebar-link vp-sidebar-page" href="/zh/UserGuide/latest/QuickStart/QuickStart.html"><!---->单机版<!----></a><ul class="vp-sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a aria-label="集群版" class="vp-link nav-link active vp-sidebar-link vp-sidebar-page active nav-link active vp-sidebar-link vp-sidebar-page active" href="/zh/UserGuide/latest/QuickStart/ClusterQuickStart.html"><!---->集群版<!----></a><ul class="vp-sidebar-sub-headers"><li class="vp-sidebar-sub-header"><a aria-label="1. 安装部署" class="vp-link nav-link vp-sidebar-link vp-heading nav-link vp-sidebar-link vp-heading" href="/zh/UserGuide/latest/QuickStart/ClusterQuickStart.html#_1-安装部署"><!---->1. 安装部署<!----></a><ul class="vp-sidebar-sub-headers"><li class="vp-sidebar-sub-header"><a aria-label="1.1 下载安装包" class="vp-link nav-link vp-sidebar-link vp-heading nav-link vp-sidebar-link vp-heading" href="/zh/UserGuide/latest/QuickStart/ClusterQuickStart.html#_1-1-下载安装包"><!---->1.1 下载安装包<!----></a><ul class="vp-sidebar-sub-headers"></ul></li><li class="vp-sidebar-sub-header"><a aria-label="1.2. 修改节点配置文件" class="vp-link nav-link vp-sidebar-link vp-heading nav-link vp-sidebar-link vp-heading" href="/zh/UserGuide/latest/QuickStart/ClusterQuickStart.html#_1-2-修改节点配置文件"><!---->1.2. 修改节点配置文件<!----></a><ul class="vp-sidebar-sub-headers"></ul></li><li class="vp-sidebar-sub-header"><a aria-label="1.3. 启动集群" class="vp-link nav-link vp-sidebar-link vp-heading nav-link vp-sidebar-link vp-heading" href="/zh/UserGuide/latest/QuickStart/ClusterQuickStart.html#_1-3-启动集群"><!---->1.3. 启动集群<!----></a><ul class="vp-sidebar-sub-headers"></ul></li><li class="vp-sidebar-sub-header"><a aria-label="【附录】清理环境" class="vp-link nav-link vp-sidebar-link vp-heading nav-link vp-sidebar-link vp-heading" href="/zh/UserGuide/latest/QuickStart/ClusterQuickStart.html#【附录】清理环境"><!---->【附录】清理环境<!----></a><ul class="vp-sidebar-sub-headers"></ul></li></ul></li><li class="vp-sidebar-sub-header"><a aria-label="2. 集群扩容" class="vp-link nav-link vp-sidebar-link vp-heading nav-link vp-sidebar-link vp-heading" href="/zh/UserGuide/latest/QuickStart/ClusterQuickStart.html#_2-集群扩容"><!---->2. 集群扩容<!----></a><ul class="vp-sidebar-sub-headers"><li class="vp-sidebar-sub-header"><a aria-label="2.1. 修改配置" class="vp-link nav-link vp-sidebar-link vp-heading nav-link vp-sidebar-link vp-heading" href="/zh/UserGuide/latest/QuickStart/ClusterQuickStart.html#_2-1-修改配置"><!---->2.1. 修改配置<!----></a><ul class="vp-sidebar-sub-headers"></ul></li><li class="vp-sidebar-sub-header"><a aria-label="2.2. 扩容" class="vp-link nav-link vp-sidebar-link vp-heading nav-link vp-sidebar-link vp-heading" href="/zh/UserGuide/latest/QuickStart/ClusterQuickStart.html#_2-2-扩容"><!---->2.2. 扩容<!----></a><ul class="vp-sidebar-sub-headers"></ul></li><li class="vp-sidebar-sub-header"><a aria-label="2.3. 验证扩容结果" class="vp-link nav-link vp-sidebar-link vp-heading nav-link vp-sidebar-link vp-heading" href="/zh/UserGuide/latest/QuickStart/ClusterQuickStart.html#_2-3-验证扩容结果"><!---->2.3. 验证扩容结果<!----></a><ul class="vp-sidebar-sub-headers"></ul></li></ul></li><li class="vp-sidebar-sub-header"><a aria-label="3. 集群缩容" class="vp-link nav-link vp-sidebar-link vp-heading nav-link vp-sidebar-link vp-heading" href="/zh/UserGuide/latest/QuickStart/ClusterQuickStart.html#_3-集群缩容"><!---->3. 集群缩容<!----></a><ul class="vp-sidebar-sub-headers"><li class="vp-sidebar-sub-header"><a aria-label="3.1 缩容一个 ConfigNode" class="vp-link nav-link vp-sidebar-link vp-heading nav-link vp-sidebar-link vp-heading" href="/zh/UserGuide/latest/QuickStart/ClusterQuickStart.html#_3-1-缩容一个-confignode"><!---->3.1 缩容一个 ConfigNode<!----></a><ul class="vp-sidebar-sub-headers"></ul></li><li class="vp-sidebar-sub-header"><a aria-label="3.2 缩容一个 DataNode" class="vp-link nav-link vp-sidebar-link vp-heading nav-link vp-sidebar-link vp-heading" href="/zh/UserGuide/latest/QuickStart/ClusterQuickStart.html#_3-2-缩容一个-datanode"><!---->3.2 缩容一个 DataNode<!----></a><ul class="vp-sidebar-sub-headers"></ul></li><li class="vp-sidebar-sub-header"><a aria-label="3.3 验证缩容结果" class="vp-link nav-link vp-sidebar-link vp-heading nav-link vp-sidebar-link vp-heading" href="/zh/UserGuide/latest/QuickStart/ClusterQuickStart.html#_3-3-验证缩容结果"><!---->3.3 验证缩容结果<!----></a><ul class="vp-sidebar-sub-headers"></ul></li></ul></li></ul><!--]--></li><li><!--[--><a aria-label="常用SQL语句" class="vp-link nav-link vp-sidebar-link vp-sidebar-page nav-link vp-sidebar-link vp-sidebar-page" href="/zh/UserGuide/latest/QuickStart/General-SQL-Statements.html"><!---->常用SQL语句<!----></a><ul class="vp-sidebar-sub-headers"></ul><!--]--></li></ul></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-heading clickable" type="button"><!----><span class="vp-sidebar-title">基础概念</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-heading clickable" type="button"><!----><span class="vp-sidebar-title">部署与运维</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-heading clickable" type="button"><!----><span class="vp-sidebar-title">使用手册</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-heading clickable" type="button"><!----><span class="vp-sidebar-title">工具体系</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-heading clickable" type="button"><!----><span class="vp-sidebar-title">应用编程接口</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-heading clickable" type="button"><!----><span class="vp-sidebar-title">系统集成</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-heading clickable" type="button"><!----><span class="vp-sidebar-title">SQL手册</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-heading clickable" type="button"><!----><span class="vp-sidebar-title">FAQ</span><span class="vp-arrow end"></span></button><!----></section></li><li><section class="vp-sidebar-group"><button class="vp-sidebar-heading clickable" type="button"><!----><span class="vp-sidebar-title">参考</span><span class="vp-arrow end"></span></button><!----></section></li></ul><!--[--><!----><!--]--></aside><!--[--><main id="main-content" class="vp-page"><!--[--><!--[--><!----><!--]--><!----><nav class="vp-breadcrumb disable"></nav><div class="vp-page-title"><h1><!---->集群版</h1><div class="page-info"><!----><!----><span class="page-date-info" aria-label="写作日期"><svg xmlns="http://www.w3.org/2000/svg" class="icon calendar-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="calendar icon"><path d="M716.4 110.137c0-18.753-14.72-33.473-33.472-33.473-18.753 0-33.473 14.72-33.473 33.473v33.473h66.993v-33.473zm-334.87 0c0-18.753-14.72-33.473-33.473-33.473s-33.52 14.72-33.52 33.473v33.473h66.993v-33.473zm468.81 33.52H716.4v100.465c0 18.753-14.72 33.473-33.472 33.473a33.145 33.145 0 01-33.473-33.473V143.657H381.53v100.465c0 18.753-14.72 33.473-33.473 33.473a33.145 33.145 0 01-33.473-33.473V143.657H180.6A134.314 134.314 0 0046.66 277.595v535.756A134.314 134.314 0 00180.6 947.289h669.74a134.36 134.36 0 00133.94-133.938V277.595a134.314 134.314 0 00-133.94-133.938zm33.473 267.877H147.126a33.145 33.145 0 01-33.473-33.473c0-18.752 14.72-33.473 33.473-33.473h736.687c18.752 0 33.472 14.72 33.472 33.473a33.145 33.145 0 01-33.472 33.473z"></path></svg><span><!----></span><meta property="datePublished" content="2024-03-29T10:50:02.000Z"></span><!----><span class="page-reading-time-info" aria-label="阅读时间"><svg xmlns="http://www.w3.org/2000/svg" class="icon timer-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="timer icon"><path d="M799.387 122.15c4.402-2.978 7.38-7.897 7.38-13.463v-1.165c0-8.933-7.38-16.312-16.312-16.312H256.33c-8.933 0-16.311 7.38-16.311 16.312v1.165c0 5.825 2.977 10.874 7.637 13.592 4.143 194.44 97.22 354.963 220.201 392.763-122.204 37.542-214.893 196.511-220.2 389.397-4.661 5.049-7.638 11.651-7.638 19.03v5.825h566.49v-5.825c0-7.379-2.849-13.981-7.509-18.9-5.049-193.016-97.867-351.985-220.2-389.527 123.24-37.67 216.446-198.453 220.588-392.892zM531.16 450.445v352.632c117.674 1.553 211.787 40.778 211.787 88.676H304.097c0-48.286 95.149-87.382 213.728-88.676V450.445c-93.077-3.107-167.901-81.297-167.901-177.093 0-8.803 6.99-15.793 15.793-15.793 8.803 0 15.794 6.99 15.794 15.793 0 80.261 63.69 145.635 142.01 145.635s142.011-65.374 142.011-145.635c0-8.803 6.99-15.793 15.794-15.793s15.793 6.99 15.793 15.793c0 95.019-73.789 172.82-165.96 177.093z"></path></svg><span>大约 7 分钟</span><meta property="timeRequired" content="PT7M"></span><!----><!----></div><hr></div><div class="toc-place-holder"><aside id="toc"><!--[--><!----><!--]--><div class="toc-header">此页内容<button type="button" class="print-button" title="打印"><svg xmlns="http://www.w3.org/2000/svg" class="icon print-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="print icon"><path d="M819.2 364.8h-44.8V128c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v236.8h-44.8C145.067 364.8 96 413.867 96 473.6v192c0 59.733 49.067 108.8 108.8 108.8h44.8V896c0 17.067 14.933 32 32 32h460.8c17.067 0 32-14.933 32-32V774.4h44.8c59.733 0 108.8-49.067 108.8-108.8v-192c0-59.733-49.067-108.8-108.8-108.8zM313.6 160h396.8v204.8H313.6V160zm396.8 704H313.6V620.8h396.8V864zM864 665.6c0 25.6-19.2 44.8-44.8 44.8h-44.8V588.8c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v121.6h-44.8c-25.6 0-44.8-19.2-44.8-44.8v-192c0-25.6 19.2-44.8 44.8-44.8h614.4c25.6 0 44.8 19.2 44.8 44.8v192z"></path></svg></button></div><div class="toc-wrapper"><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level2 toc-link level2" href="#_1-安装部署">1. 安装部署</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#_1-1-下载安装包">1.1 下载安装包</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#_1-2-修改节点配置文件">1.2. 修改节点配置文件</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#_1-3-启动集群">1.3. 启动集群</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#【附录】清理环境">【附录】清理环境</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2 toc-link level2" href="#_2-集群扩容">2. 集群扩容</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#_2-1-修改配置">2.1. 修改配置</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#_2-2-扩容">2.2. 扩容</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#_2-3-验证扩容结果">2.3. 验证扩容结果</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2 toc-link level2" href="#_3-集群缩容">3. 集群缩容</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#_3-1-缩容一个-confignode">3.1 缩容一个 ConfigNode</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#_3-2-缩容一个-datanode">3.2 缩容一个 DataNode</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3 toc-link level3" href="#_3-3-验证缩容结果">3.3 验证缩容结果</a></li><!----><!--]--></ul></li><!--]--></ul><div class="toc-marker" style="top:-1.7rem;"></div></div><!--[--><!----><!--]--></aside></div><!--[--><!----><!--]--><div class="theme-hope-content"><!--
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--><h1 id="集群版" tabindex="-1"><a class="header-anchor" href="#集群版" aria-hidden="true">#</a> 集群版</h1><p>本文将简单介绍 IoTDB 集群的安装配置、扩容和缩容等常规操作。<br> 遇到问题可以看:<br><a href="/zh/UserGuide/latest/FAQ/Frequently-asked-questions.html" class="">FAQ</a></p><h2 id="_1-安装部署" tabindex="-1"><a class="header-anchor" href="#_1-安装部署" aria-hidden="true">#</a> 1. 安装部署</h2><p>部署集群时我们推荐优先使用<code>hostname</code>来配置集群，这样可以避免一些网络问题。需要在每个节点上分别配置<code>/etc/hosts</code> ，windows 上为<code>C:\Windows\System32\drivers\etc\hosts</code>。</p><p>我们将以最小的改动，启动一个含有3个 ConfigNode 和3个DataNode(3C3D)集群：</p><ul><li>数据/元数据副本数为1</li><li>集群名称为defaultCluster</li><li>Confignode JVM 的最大堆内存配置为机器内存的 1/4</li><li>Datanode JVM 的最大堆内存配置为机器内存的 1/4</li></ul><p>假设有3台物理机(下面称节点)，操作系统为Linux，并且已经安装配置好了JAVA环境(具体见<a href="/zh/UserGuide/latest/QuickStart/QuickStart.html" class="">单机版对安装环境说明</a>)，安装目录均为<code>/data/iotdb</code>。<br> IP地址和服务角色分配如下：</p><table><thead><tr><th>节点IP</th><th style="text-align:left;">192.168.132.10</th><th style="text-align:left;">192.168.132.11</th><th style="text-align:left;">192.168.132.12</th></tr></thead><tbody><tr><td><code>hostname</code></td><td style="text-align:left;">iotdb-1</td><td style="text-align:left;">iotdb-2</td><td style="text-align:left;">iotdb-3</td></tr><tr><td>服务</td><td style="text-align:left;">ConfigNode</td><td style="text-align:left;">ConfigNode</td><td style="text-align:left;">ConfigNode</td></tr><tr><td>服务</td><td style="text-align:left;">DataNode</td><td style="text-align:left;">DataNode</td><td style="text-align:left;">DataNode</td></tr></tbody></table><p>端口占用：</p><table><thead><tr><th>服务</th><th>ConfigNode</th><th>DataNode</th></tr></thead><tbody><tr><td>端口</td><td>10710, 10720</td><td>6667, 10730, 10740, 10750, 10760</td></tr></tbody></table><p><strong>说明：</strong></p><ul><li>可以使用<code>IP地址</code>或者<code>hostname(机器名/域名)</code>来安装配置 IoTDB 集群，本文以<code>hostname(机器名/域名)</code>为例。使用<code>hostname(机器名/域名)</code>，需要配置<code>/etc/hosts</code>。</li><li>优先推荐使用 <code>hostname(机器名/域名)</code> 进行配置，这样可以避免一些网络问题，也更方便迁移集群。</li><li>JVM堆内存配置: <code>confignode-env.sh</code> 和 <code>datanode-env.sh</code> 内配置<code>ON_HEAP_MEMORY</code>, 建议设置值大于等于1G。ConfigNode 1~2G就足够了，DataNode的内存配置则要取决于数据接入的数据量和查询数据量。</li></ul><h3 id="_1-1-下载安装包" tabindex="-1"><a class="header-anchor" href="#_1-1-下载安装包" aria-hidden="true">#</a> 1.1 下载安装包</h3><p>在每个节点，将安装包<a href="https://iotdb.apache.org/Download/" target="_blank" rel="noopener noreferrer">下载<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a>后，解压到安装目录，这里为<code>/data/iotdb</code>。<br> 目录结构:</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code>/data/iotdb/
├── conf <span class="token comment"># 配置文件</span>
├── lib <span class="token comment"># jar library</span>
├── sbin <span class="token comment"># 启动/停止等脚本</span>
└── tools <span class="token comment"># 其他工具</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="_1-2-修改节点配置文件" tabindex="-1"><a class="header-anchor" href="#_1-2-修改节点配置文件" aria-hidden="true">#</a> 1.2. 修改节点配置文件</h3><p>在每个节点均配置 hosts</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token builtin class-name">echo</span> <span class="token string">&quot;192.168.132.10 iotdb-1&quot;</span> <span class="token operator">&gt;&gt;</span> /etc/hosts
<span class="token builtin class-name">echo</span> <span class="token string">&quot;192.168.132.11 iotdb-2&quot;</span> <span class="token operator">&gt;&gt;</span> /etc/hosts
<span class="token builtin class-name">echo</span> <span class="token string">&quot;192.168.132.12 iotdb-3&quot;</span> <span class="token operator">&gt;&gt;</span> /etc/hosts
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>配置文件在 <code>/data/iotdb/conf</code>目录下。<br> 按照下表修改相应的配置文件：</p><table><thead><tr><th>配置</th><th style="text-align:left;">配置项</th><th>IP:192.168.132.10</th><th>IP:192.168.132.11</th><th style="text-align:left;">IP:192.168.132.12</th></tr></thead><tbody><tr><td>iotdb-confignode.properties</td><td style="text-align:left;">cn_internal_address</td><td>iotdb-1</td><td>iotdb-2</td><td style="text-align:left;">iotdb-3</td></tr><tr><td></td><td style="text-align:left;">cn_seed_config_node</td><td>iotdb-1:10710</td><td>iotdb-1:10710</td><td style="text-align:left;">iotdb-1:10710</td></tr><tr><td>iotdb-datanode.properties</td><td style="text-align:left;">dn_rpc_address</td><td>iotdb-1</td><td>iotdb-2</td><td style="text-align:left;">iotdb-3</td></tr><tr><td></td><td style="text-align:left;">dn_internal_address</td><td>iotdb-1</td><td>iotdb-2</td><td style="text-align:left;">iotdb-3</td></tr><tr><td></td><td style="text-align:left;">dn_seed_config_node</td><td>iotdb-1:10710</td><td>iotdb-1:10710</td><td style="text-align:left;">iotdb-1:10710</td></tr></tbody></table><p><strong>注意：</strong><br> 我们推荐所有节点的 iotdb-common.properties 和 JVM 的内存配置是一致的。</p><h3 id="_1-3-启动集群" tabindex="-1"><a class="header-anchor" href="#_1-3-启动集群" aria-hidden="true">#</a> 1.3. 启动集群</h3><p>启动集群前，需保证配置正确，保证 IoTDB 安装目录下没有数据(<code>data</code>目录)。</p><h4 id="_1-3-1-启动第一个节点" tabindex="-1"><a class="header-anchor" href="#_1-3-1-启动第一个节点" aria-hidden="true">#</a> 1.3.1. 启动第一个节点</h4><p>即上面表格中<code>cn_seed_config_node</code>配置的节点。<br> 登录该节点 <code>iotdb-1(192.168.132.10)</code>，执行下面命令：</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token builtin class-name">cd</span> /data/iotdb
<span class="token comment"># 启动 ConfigNode 和 DataNode 服务</span>
sbin/start-standalone.sh
<span class="token comment"># 查看 DataNode 日志以确定启动成功</span>
<span class="token function">tail</span> <span class="token parameter variable">-f</span> logs/log_datanode_all.log
<span class="token comment"># 期望看见类似下方的日志</span>
<span class="token comment"># 2023-07-21 20:26:01,881 [main] INFO o.a.i.db.service.DataNode:192 - Congratulation, IoTDB DataNode is set up successfully. Now, enjoy yourself!</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>如果没有看到上面所说的日志或者看到了 Exception，那么代表启动失败了。请查看 <code>/data/iotdb/logs</code> 目录内的<code>log_confignode_all.log</code> 和 <code>log_datanode_all.log</code> 日志文件。</p><p><strong>注意</strong>：</p><ul><li>要保证第一个节点启动成功后，再启动其他节点。确切的说，要先保证第一个 ConfigNode 服务启动成功，即<code>cn_seed_config_node</code>配置的节点。</li><li>如果启动失败，需要<a href="#%E3%80%90%E9%99%84%E5%BD%95%E3%80%91%E6%B8%85%E7%90%86%E7%8E%AF%E5%A2%83">清理环境</a>后，再次启动。</li><li>ConfigNode 和 DataNode 服务都可以单独启动:</li></ul><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token comment"># 单独启动 ConfigNode， 后台启动</span>
sbin/start-confignode.sh <span class="token parameter variable">-d</span>
<span class="token comment"># 单独启动 DataNode，后台启动</span>
sbin/start-datanode.sh <span class="token parameter variable">-d</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="_1-3-2-启动其他两个节点的-confignode-和-datanode" tabindex="-1"><a class="header-anchor" href="#_1-3-2-启动其他两个节点的-confignode-和-datanode" aria-hidden="true">#</a> 1.3.2. 启动其他两个节点的 ConfigNode 和 DataNode</h4><p>在节点 <code>iotdb-2(192.168.132.11)</code> 和 <code>iotdb-3(192.168.132.12)</code> 两个节点上分别执行：</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token builtin class-name">cd</span> /data/iotdb
<span class="token comment"># 启动 ConfigNode 和 DataNode 服务</span>
sbin/start-standalone.sh
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>如果启动失败，需要在所有节点执行<a href="#%E3%80%90%E9%99%84%E5%BD%95%E3%80%91%E6%B8%85%E7%90%86%E7%8E%AF%E5%A2%83">清理环境</a>后，然后从启动第一个节点开始，再重新执行一次。</p><h4 id="_1-3-3-检验集群状态" tabindex="-1"><a class="header-anchor" href="#_1-3-3-检验集群状态" aria-hidden="true">#</a> 1.3.3. 检验集群状态</h4><p>在任意节点上，在 Cli 执行 <code>show cluster</code>:</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code>/data/iotdb/sbin/start-cli.sh <span class="token parameter variable">-h</span> iotdb-1
IoTDB<span class="token operator">&gt;</span>show cluster<span class="token punctuation">;</span>
<span class="token comment"># 示例结果如下：</span>
+------+----------+-------+---------------+------------+-------+---------+
<span class="token operator">|</span>NodeID<span class="token operator">|</span> NodeType<span class="token operator">|</span> Status<span class="token operator">|</span>InternalAddress<span class="token operator">|</span>InternalPort<span class="token operator">|</span>Version<span class="token operator">|</span>BuildInfo<span class="token operator">|</span>
+------+----------+-------+---------------+------------+-------+---------+
<span class="token operator">|</span> <span class="token number">0</span><span class="token operator">|</span>ConfigNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-1 <span class="token operator">|</span> <span class="token number">10710</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">1</span><span class="token operator">|</span> DataNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-1 <span class="token operator">|</span> <span class="token number">10730</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">2</span><span class="token operator">|</span>ConfigNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-2 <span class="token operator">|</span> <span class="token number">10710</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">3</span><span class="token operator">|</span> DataNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-2 <span class="token operator">|</span> <span class="token number">10730</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">4</span><span class="token operator">|</span>ConfigNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-3 <span class="token operator">|</span> <span class="token number">10710</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">5</span><span class="token operator">|</span> DataNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-3 <span class="token operator">|</span> <span class="token number">10730</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
+------+----------+-------+---------------+------------+-------+---------+
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p><strong>说明：</strong><br><code>start-cli.sh -h</code> 后指定的IP地址，可以是任意一个 DataNode 的IP地址。</p><h3 id="【附录】清理环境" tabindex="-1"><a class="header-anchor" href="#【附录】清理环境" aria-hidden="true">#</a> 【附录】清理环境</h3><p>在所有节点执行：</p><ol><li>结束 ConfigNode 和 DataNode 进程。</li></ol><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token comment"># 1. 停止 ConfigNode 和 DataNode 服务</span>
sbin/stop-standalone.sh
<span class="token comment"># 2. 检查是否还有进程残留</span>
jps
<span class="token comment"># 或者</span>
<span class="token function">ps</span> -ef<span class="token operator">|</span><span class="token function">grep</span> iotdb
<span class="token comment"># 3. 如果有进程残留，则手动kill</span>
<span class="token function">kill</span> <span class="token parameter variable">-9</span> <span class="token operator">&lt;</span>pid<span class="token operator">&gt;</span>
<span class="token comment"># 如果确定机器上仅有1个iotdb，可以使用下面命令清理残留进程</span>
<span class="token function">ps</span> -ef<span class="token operator">|</span><span class="token function">grep</span> iotdb<span class="token operator">|</span><span class="token function">grep</span> <span class="token parameter variable">-v</span> <span class="token function">grep</span><span class="token operator">|</span><span class="token function">tr</span> <span class="token parameter variable">-s</span> <span class="token string">&#39; &#39;</span> <span class="token string">&#39; &#39;</span> <span class="token operator">|</span><span class="token function">cut</span> <span class="token parameter variable">-d</span> <span class="token string">&#39; &#39;</span> -f2<span class="token operator">|</span><span class="token function">xargs</span> <span class="token function">kill</span> <span class="token parameter variable">-9</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ol start="2"><li>删除 data 和 logs 目录。</li></ol><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token builtin class-name">cd</span> /data/iotdb
<span class="token function">rm</span> <span class="token parameter variable">-rf</span> data logs
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><p>说明：删除 data 目录是必要的，删除 logs 目录是为了纯净日志，非必需。</p><h2 id="_2-集群扩容" tabindex="-1"><a class="header-anchor" href="#_2-集群扩容" aria-hidden="true">#</a> 2. 集群扩容</h2><p>扩容方式与上方启动其他节点相同。也就是，在要添加的节点上，下载IoTDB的安装包，解压，修改配置，然后启动。这里要添加节点的IP为 <code>192.168.132.13</code><br><strong>注意：</strong></p><ul><li>扩容的节点必须是干净的节点，不能有数据(也就是<code>data</code>目录)</li><li>iotdb-common.properties中的<code>cluster_name</code>的配置必须和已有集群一致。</li><li><code>cn_seed_config_node</code> 和 <code>dn_seed_config_node</code>的配置必须和已有集群一致。</li><li>原有数据不会移动到新节点，新创建的元数据分区和数据分区很可能在新的节点。</li></ul><h3 id="_2-1-修改配置" tabindex="-1"><a class="header-anchor" href="#_2-1-修改配置" aria-hidden="true">#</a> 2.1. 修改配置</h3><p>在原节点上新增一行 hosts</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token builtin class-name">echo</span> <span class="token string">&quot;192.168.132.13 iotdb-4&quot;</span> <span class="token operator">&gt;&gt;</span> /etc/hosts
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>在节点设置 hosts</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token builtin class-name">echo</span> <span class="token string">&quot;192.168.132.10 iotdb-1&quot;</span> <span class="token operator">&gt;&gt;</span> /etc/hosts
<span class="token builtin class-name">echo</span> <span class="token string">&quot;192.168.132.11 iotdb-2&quot;</span> <span class="token operator">&gt;&gt;</span> /etc/hosts
<span class="token builtin class-name">echo</span> <span class="token string">&quot;192.168.132.12 iotdb-3&quot;</span> <span class="token operator">&gt;&gt;</span> /etc/hosts
<span class="token builtin class-name">echo</span> <span class="token string">&quot;192.168.132.13 iotdb-4&quot;</span> <span class="token operator">&gt;&gt;</span> /etc/hosts
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>按照下表修改相应的配置文件：</p><table><thead><tr><th>配置</th><th style="text-align:left;">配置项</th><th style="text-align:left;">IP:192.168.132.13</th></tr></thead><tbody><tr><td>iotdb-confignode.properties</td><td style="text-align:left;">cn_internal_address</td><td style="text-align:left;">iotdb-4</td></tr><tr><td></td><td style="text-align:left;">cn_seed_config_node</td><td style="text-align:left;">iotdb-1:10710</td></tr><tr><td>iotdb-datanode.properties</td><td style="text-align:left;">dn_rpc_address</td><td style="text-align:left;">iotdb-4</td></tr><tr><td></td><td style="text-align:left;">dn_internal_address</td><td style="text-align:left;">iotdb-4</td></tr><tr><td></td><td style="text-align:left;">dn_seed_config_node</td><td style="text-align:left;">iotdb-1:10710</td></tr></tbody></table><h3 id="_2-2-扩容" tabindex="-1"><a class="header-anchor" href="#_2-2-扩容" aria-hidden="true">#</a> 2.2. 扩容</h3><p>在新增节点<code>iotdb-4(192.168.132.13)</code>上，执行：</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token builtin class-name">cd</span> /data/iotdb
<span class="token comment"># 启动 ConfigNode 和 DataNode 服务</span>
sbin/start-standalone.sh
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="_2-3-验证扩容结果" tabindex="-1"><a class="header-anchor" href="#_2-3-验证扩容结果" aria-hidden="true">#</a> 2.3. 验证扩容结果</h3><p>在 Cli 执行 <code>show cluster</code>，结果如下：</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code>/data/iotdb/sbin/start-cli.sh <span class="token parameter variable">-h</span> iotdb-1
IoTDB<span class="token operator">&gt;</span>show cluster<span class="token punctuation">;</span>
<span class="token comment"># 示例结果如下：</span>
+------+----------+-------+---------------+------------+-------+---------+
<span class="token operator">|</span>NodeID<span class="token operator">|</span> NodeType<span class="token operator">|</span> Status<span class="token operator">|</span>InternalAddress<span class="token operator">|</span>InternalPort<span class="token operator">|</span>Version<span class="token operator">|</span>BuildInfo<span class="token operator">|</span>
+------+----------+-------+---------------+------------+-------+---------+
<span class="token operator">|</span> <span class="token number">0</span><span class="token operator">|</span>ConfigNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-1 <span class="token operator">|</span> <span class="token number">10710</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">1</span><span class="token operator">|</span> DataNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-1 <span class="token operator">|</span> <span class="token number">10730</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">2</span><span class="token operator">|</span>ConfigNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-2 <span class="token operator">|</span> <span class="token number">10710</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">3</span><span class="token operator">|</span> DataNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-2 <span class="token operator">|</span> <span class="token number">10730</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">4</span><span class="token operator">|</span>ConfigNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-3 <span class="token operator">|</span> <span class="token number">10710</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">5</span><span class="token operator">|</span> DataNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-3 <span class="token operator">|</span> <span class="token number">10730</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">6</span><span class="token operator">|</span>ConfigNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-4 <span class="token operator">|</span> <span class="token number">10710</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">7</span><span class="token operator">|</span> DataNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-4 <span class="token operator">|</span> <span class="token number">10730</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
+------+----------+-------+---------------+------------+-------+---------+
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="_3-集群缩容" tabindex="-1"><a class="header-anchor" href="#_3-集群缩容" aria-hidden="true">#</a> 3. 集群缩容</h2><p><strong>注意:</strong></p><ul><li>可以在任何一个集群内的节点上，执行缩容操作。</li><li>集群内的任意节点都可以被缩容。但是存留的 DataNode 服务不能小于副本数设置。</li><li>请耐心等待缩容脚本执行结束，并仔细阅读日志说明，尤其是结束前的指南说明。</li></ul><h3 id="_3-1-缩容一个-confignode" tabindex="-1"><a class="header-anchor" href="#_3-1-缩容一个-confignode" aria-hidden="true">#</a> 3.1 缩容一个 ConfigNode</h3><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token builtin class-name">cd</span> /data/iotdb
<span class="token comment"># 方式一：使用 ip:port 移除</span>
sbin/remove-confignode.sh iotdb-4:10710
<span class="token comment"># 方式二：使用节点编号移除, `show cluster`中的 NodeID </span>
sbin/remove-confignode.sh <span class="token number">6</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="_3-2-缩容一个-datanode" tabindex="-1"><a class="header-anchor" href="#_3-2-缩容一个-datanode" aria-hidden="true">#</a> 3.2 缩容一个 DataNode</h3><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token builtin class-name">cd</span> /data/iotdb
<span class="token comment"># 方式一：使用 ip:port 移除</span>
sbin/remove-datanode.sh iotdb-4:6667
<span class="token comment"># 方式二：使用节点编号移除, `show cluster`中的 NodeID</span>
sbin/remove-datanode.sh <span class="token number">7</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="_3-3-验证缩容结果" tabindex="-1"><a class="header-anchor" href="#_3-3-验证缩容结果" aria-hidden="true">#</a> 3.3 验证缩容结果</h3><p>在 Cli 执行 <code>show cluster</code>，结果如下：</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code>+------+----------+-------+---------------+------------+-------+---------+
<span class="token operator">|</span>NodeID<span class="token operator">|</span> NodeType<span class="token operator">|</span> Status<span class="token operator">|</span>InternalAddress<span class="token operator">|</span>InternalPort<span class="token operator">|</span>Version<span class="token operator">|</span>BuildInfo<span class="token operator">|</span>
+------+----------+-------+---------------+------------+-------+---------+
<span class="token operator">|</span> <span class="token number">0</span><span class="token operator">|</span>ConfigNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-1 <span class="token operator">|</span> <span class="token number">10710</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">1</span><span class="token operator">|</span> DataNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-1 <span class="token operator">|</span> <span class="token number">10730</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">2</span><span class="token operator">|</span>ConfigNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-2 <span class="token operator">|</span> <span class="token number">10710</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">3</span><span class="token operator">|</span> DataNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-2 <span class="token operator">|</span> <span class="token number">10730</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">4</span><span class="token operator">|</span>ConfigNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-3 <span class="token operator">|</span> <span class="token number">10710</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
<span class="token operator">|</span> <span class="token number">5</span><span class="token operator">|</span> DataNode<span class="token operator">|</span>Running<span class="token operator">|</span> iotdb-3 <span class="token operator">|</span> <span class="token number">10730</span><span class="token operator">|</span><span class="token number">1</span>.x.x <span class="token operator">|</span> xxxxxxx<span class="token operator">|</span>
+------+----------+-------+---------------+------------+-------+---------+
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div></div><!--[--><!----><!--]--><footer class="page-meta"><div class="meta-item edit-link"><a href="https://github.com/apache/iotdb-docs/edit/main/src/zh/UserGuide/latest/QuickStart/ClusterQuickStart.md" rel="noopener noreferrer" target="_blank" aria-label="发现错误？在 GitHub 上编辑此页" class="nav-link label"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon"><path d="M430.818 653.65a60.46 60.46 0 0 1-50.96-93.281l71.69-114.012 7.773-10.365L816.038 80.138A60.46 60.46 0 0 1 859.225 62a60.46 60.46 0 0 1 43.186 18.138l43.186 43.186a60.46 60.46 0 0 1 0 86.373L588.879 565.55l-8.637 8.637-117.466 68.234a60.46 60.46 0 0 1-31.958 11.229z"></path><path d="M728.802 962H252.891A190.883 190.883 0 0 1 62.008 771.98V296.934a190.883 190.883 0 0 1 190.883-192.61h267.754a60.46 60.46 0 0 1 0 120.92H252.891a69.962 69.962 0 0 0-69.098 69.099V771.98a69.962 69.962 0 0 0 69.098 69.098h475.911A69.962 69.962 0 0 0 797.9 771.98V503.363a60.46 60.46 0 1 1 120.922 0V771.98A190.883 190.883 0 0 1 728.802 962z"></path></svg><!--]-->发现错误？在 GitHub 上编辑此页<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></div><div class="meta-item git-info"><div class="update-time"><span class="label">上次编辑于: </span><!----></div><div class="contributors"><span class="label">贡献者: </span><!--[--><!--[--><span class="contributor" title="email: 105700158+wanghui42@users.noreply.github.com">wanghui42</span><!--]--><!--]--></div></div></footer><nav class="vp-page-nav"><a aria-label="单机版" class="vp-link nav-link prev nav-link prev" href="/zh/UserGuide/latest/QuickStart/QuickStart.html"><div class="hint"><span class="arrow start"></span>上一页</div><div class="link"><!---->单机版</div></a><a aria-label="常用SQL语句" class="vp-link nav-link next nav-link next" href="/zh/UserGuide/latest/QuickStart/General-SQL-Statements.html"><div class="hint">下一页<span class="arrow end"></span></div><div class="link">常用SQL语句<!----></div></a></nav><!----><!--[--><!----><!--]--><!--]--></main><!--]--><footer style="padding-bottom:2rem;"><span id="doc-version" style="display:none;">latest</span><p style="text-align:center;color:#909399;font-size:12px;margin:0 30px;">Copyright © 2024 The Apache Software Foundation.<br> Apache and the Apache feather logo are trademarks of The Apache Software Foundation</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"><strong>Have a question?</strong> Connect with us on QQ, WeChat, or Slack. <a href="https://github.com/apache/iotdb/issues/1995">Join the community</a> now.</p></footer></div><!--]--><!--]--><!----><!--]--></div>
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