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data-balloon-pos="up"><svg xmlns="http://www.w3.org/2000/svg" class="icon calendar-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="calendar icon" name="calendar"><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 data-allow-mismatch="text">4/22/26</span><meta property="datePublished" content="2026-04-22T04:07:31.000Z"></span><!----><span class="page-reading-time-info" aria-label="Reading Time⌛" data-balloon-pos="up"><svg xmlns="http://www.w3.org/2000/svg" class="icon timer-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="timer icon" name="timer"><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>About 4 min</span><meta property="timeRequired" content="PT4M"></span><!----><!----></div><hr></div><!----><div class="" vp-content><!----><div id="markdown-content"><h1 id="auto-start-on-boot" tabindex="-1"><a class="header-anchor" href="#auto-start-on-boot"><span>Auto-start on Boot</span></a></h1><h2 id="_1-overview" tabindex="-1"><a class="header-anchor" href="#_1-overview"><span>1. Overview</span></a></h2><p>IoTDB supports registering ConfigNode, DataNode, and AINode as Linux system services via the three scripts <code>daemon-confignode.sh</code>, <code>daemon-datanode.sh</code>, and <code>daemon-ainode.sh</code>. Combined with the system-built <code>systemctl</code> command, it manages the IoTDB cluster in daemon mode, enabling more convenient startup, shutdown, restart, and auto-start on boot operations, and improving service stability.</p><blockquote><p>Note: This feature is available starting from version 2.0.9-beta.</p></blockquote><h2 id="_2-environment-requirements" tabindex="-1"><a class="header-anchor" href="#_2-environment-requirements"><span>2. Environment Requirements</span></a></h2><table><thead><tr><th>Item</th><th>Specification</th></tr></thead><tbody><tr><td>OS</td><td>Linux (supports the <code>systemctl</code> command)</td></tr><tr><td>User Privilege</td><td>root user</td></tr><tr><td>Environment Variable</td><td><code>JAVA_HOME</code> must be set before deploying ConfigNode and DataNode</td></tr></tbody></table><h2 id="_3-service-registration" tabindex="-1"><a class="header-anchor" href="#_3-service-registration"><span>3. Service Registration</span></a></h2><p>Enter the IoTDB installation directory and execute the corresponding daemon script:</p><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#7F848E;font-style:italic;"># Register ConfigNode service</span></span> |
| <span class="line"><span style="color:#61AFEF;">./tools/ops/daemon-confignode.sh</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Register DataNode service</span></span> |
| <span class="line"><span style="color:#61AFEF;">./tools/ops/daemon-datanode.sh</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Register AINode service</span></span> |
| <span class="line"><span style="color:#61AFEF;">./tools/ops/daemon-ainode.sh</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>During script execution, you will be prompted with two options:</p><ol><li>Whether to start the corresponding IoTDB service immediately (iotdb-confignode / iotdb-datanode / iotdb-ainode);</li><li>Whether to register the corresponding service for auto-start on boot.</li></ol><p>After script execution, the corresponding service files will be generated in the <code>/etc/systemd/system/</code> directory:</p><ul><li><code>iotdb-confignode.service</code></li><li><code>iotdb-datanode.service</code></li><li><code>iotdb-ainode.service</code></li></ul><h2 id="_4-service-management" tabindex="-1"><a class="header-anchor" href="#_4-service-management"><span>4. Service Management</span></a></h2><p>After service registration, you can use <code>systemctl</code> commands to start, stop, restart, check status, and configure auto-start on boot for each IoTDB node service. All commands below must be executed as the root user.</p><h3 id="_4-1-manual-service-startup" tabindex="-1"><a class="header-anchor" href="#_4-1-manual-service-startup"><span>4.1 Manual Service Startup</span></a></h3><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#7F848E;font-style:italic;"># Start ConfigNode service</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> start</span><span style="color:#98C379;"> iotdb-confignode</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Start DataNode service</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> start</span><span style="color:#98C379;"> iotdb-datanode</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Start AINode service</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> start</span><span style="color:#98C379;"> iotdb-ainode</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="_4-2-manual-service-shutdown" tabindex="-1"><a class="header-anchor" href="#_4-2-manual-service-shutdown"><span>4.2 Manual Service Shutdown</span></a></h3><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#7F848E;font-style:italic;"># Stop ConfigNode service</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> stop</span><span style="color:#98C379;"> iotdb-confignode</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Stop DataNode service</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> stop</span><span style="color:#98C379;"> iotdb-datanode</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Stop AINode service</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> stop</span><span style="color:#98C379;"> iotdb-ainode</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>After stopping the service, check the service status. If it shows <code>inactive (dead)</code>, the service has been shut down successfully. For other statuses, check IoTDB logs to analyze exceptions.</p><h3 id="_4-3-check-service-status" tabindex="-1"><a class="header-anchor" href="#_4-3-check-service-status"><span>4.3 Check Service Status</span></a></h3><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#7F848E;font-style:italic;"># Check ConfigNode service status</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> status</span><span style="color:#98C379;"> iotdb-confignode</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Check DataNode service status</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> status</span><span style="color:#98C379;"> iotdb-datanode</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Check AINode service status</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> status</span><span style="color:#98C379;"> iotdb-ainode</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>Status Description:</p><ul><li><code>active (running)</code>: Service is running. If this status persists for 10 minutes, the service has started successfully.</li><li><code>failed</code>: Service startup failed. Check IoTDB logs for troubleshooting.</li></ul><h3 id="_4-4-restart-service" tabindex="-1"><a class="header-anchor" href="#_4-4-restart-service"><span>4.4 Restart Service</span></a></h3><p>Restarting a service is equivalent to stopping and then starting it. Commands are as follows:</p><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#7F848E;font-style:italic;"># Restart ConfigNode service</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> restart</span><span style="color:#98C379;"> iotdb-confignode</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Restart DataNode service</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> restart</span><span style="color:#98C379;"> iotdb-datanode</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Restart AINode service</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> restart</span><span style="color:#98C379;"> iotdb-ainode</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="_4-5-enable-auto-start-on-boot" tabindex="-1"><a class="header-anchor" href="#_4-5-enable-auto-start-on-boot"><span>4.5 Enable Auto-start on Boot</span></a></h3><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#7F848E;font-style:italic;"># Enable ConfigNode auto-start on boot</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> enable</span><span style="color:#98C379;"> iotdb-confignode</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Enable DataNode auto-start on boot</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> enable</span><span style="color:#98C379;"> iotdb-datanode</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Enable AINode auto-start on boot</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> enable</span><span style="color:#98C379;"> iotdb-ainode</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="_4-6-disable-auto-start-on-boot" tabindex="-1"><a class="header-anchor" href="#_4-6-disable-auto-start-on-boot"><span>4.6 Disable Auto-start on Boot</span></a></h3><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#7F848E;font-style:italic;"># Disable ConfigNode auto-start on boot</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> disable</span><span style="color:#98C379;"> iotdb-confignode</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Disable DataNode auto-start on boot</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> disable</span><span style="color:#98C379;"> iotdb-datanode</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"># Disable AINode auto-start on boot</span></span> |
| <span class="line"><span style="color:#61AFEF;">systemctl</span><span style="color:#98C379;"> disable</span><span style="color:#98C379;"> iotdb-ainode</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="_5-custom-service-configuration" tabindex="-1"><a class="header-anchor" href="#_5-custom-service-configuration"><span>5. Custom Service Configuration</span></a></h2><h3 id="_5-1-customization-methods" tabindex="-1"><a class="header-anchor" href="#_5-1-customization-methods"><span>5.1 Customization Methods</span></a></h3><h4 id="_5-1-1-method-1-modify-the-script" tabindex="-1"><a class="header-anchor" href="#_5-1-1-method-1-modify-the-script"><span>5.1.1 Method 1: Modify the Script</span></a></h4><ol><li>Modify the <code>[Unit]</code>, <code>[Service]</code>, and <code>[Install]</code> sections in the <code>daemon-xxx.sh</code> script. For details of configuration items, refer to the next section.</li><li>Execute the <code>daemon-xxx.sh</code> script.</li></ol><h4 id="_5-1-2-method-2-modify-the-service-file" tabindex="-1"><a class="header-anchor" href="#_5-1-2-method-2-modify-the-service-file"><span>5.1.2 Method 2: Modify the Service File</span></a></h4><ol><li>Modify the <code>xx.service</code> file in <code>/etc/systemd/system</code>.</li><li>Execute <code>systemctl daemon-reload</code>.</li></ol><h3 id="_5-2-daemon-xxx-sh-configuration-items" tabindex="-1"><a class="header-anchor" href="#_5-2-daemon-xxx-sh-configuration-items"><span>5.2 <code>daemon-xxx.sh</code> Configuration Items</span></a></h3><h4 id="_5-2-1-unit-section-service-metadata" tabindex="-1"><a class="header-anchor" href="#_5-2-1-unit-section-service-metadata"><span>5.2.1 <code>[Unit]</code> Section (Service Metadata)</span></a></h4><table><thead><tr><th>Item</th><th>Description</th></tr></thead><tbody><tr><td>Description</td><td>Service description</td></tr><tr><td>Documentation</td><td>Link to the official IoTDB documentation</td></tr><tr><td>After</td><td>Ensures the service starts only after the network service has started</td></tr></tbody></table><h4 id="_5-2-2-service-section-service-runtime-configuration" tabindex="-1"><a class="header-anchor" href="#_5-2-2-service-section-service-runtime-configuration"><span>5.2.2 <code>[Service]</code> Section (Service Runtime Configuration)</span></a></h4><table><thead><tr><th>Item</th><th>Meaning</th></tr></thead><tbody><tr><td>StandardOutput, StandardError</td><td>Specify storage paths for service standard output and error logs</td></tr><tr><td>LimitNOFILE=65536</td><td>Set the maximum number of file descriptors, default value is 65536</td></tr><tr><td>Type=simple</td><td>Service type is a simple foreground process; systemd tracks the main service process</td></tr><tr><td>User=root, Group=root</td><td>Run the service with root user and group permissions</td></tr><tr><td>ExecStart / ExecStop</td><td>Specify the paths of the service startup and shutdown scripts respectively</td></tr><tr><td>Restart=on-failure</td><td>Automatically restart the service only if it exits abnormally</td></tr><tr><td>SuccessExitStatus=143</td><td>Treat exit code 143 (128+15, normal termination via SIGTERM) as a successful exit</td></tr><tr><td>RestartSec=5</td><td>Interval between service restarts, default 5 seconds</td></tr><tr><td>StartLimitInterval=600s, StartLimitBurst=3</td><td>Maximum 3 restarts within 10 minutes (600 seconds) to prevent excessive resource consumption from frequent restarts</td></tr><tr><td>RestartPreventExitStatus=SIGKILL</td><td>Do not auto-restart the service if killed by the SIGKILL signal, avoiding infinite restart of zombie processes</td></tr></tbody></table><h4 id="_5-2-3-install-section-installation-configuration" tabindex="-1"><a class="header-anchor" href="#_5-2-3-install-section-installation-configuration"><span>5.2.3 <code>[Install]</code> Section (Installation Configuration)</span></a></h4><table><thead><tr><th>Item</th><th>Meaning</th></tr></thead><tbody><tr><td>WantedBy=multi-user.target</td><td>Start the service automatically when the system enters multi-user mode</td></tr></tbody></table><h3 id="_5-3-sample-service-file-format" tabindex="-1"><a class="header-anchor" href="#_5-3-sample-service-file-format"><span>5.3 Sample <code>.service</code> File Format</span></a></h3><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#ABB2BF;">[Unit]</span></span> |
| <span class="line"><span style="color:#E06C75;">Description</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">iotdb-confignode</span></span> |
| <span class="line"><span style="color:#E06C75;">Documentation</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">https://iotdb.apache.org/</span></span> |
| <span class="line"><span style="color:#E06C75;">After</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">network.target</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">[Service]</span></span> |
| <span class="line"><span style="color:#E06C75;">StandardOutput</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">null</span></span> |
| <span class="line"><span style="color:#E06C75;">StandardError</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">null</span></span> |
| <span class="line"><span style="color:#E06C75;">LimitNOFILE</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">65536</span></span> |
| <span class="line"><span style="color:#E06C75;">Type</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">simple</span></span> |
| <span class="line"><span style="color:#E06C75;">User</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">root</span></span> |
| <span class="line"><span style="color:#E06C75;">Group</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">root</span></span> |
| <span class="line"><span style="color:#E06C75;">Environment</span><span style="color:#56B6C2;">=</span><span style="color:#E06C75;">JAVA_HOME</span><span style="color:#56B6C2;">=</span><span style="color:#E06C75;">$JAVA_HOME</span></span> |
| <span class="line"><span style="color:#E06C75;">ExecStart</span><span style="color:#56B6C2;">=</span><span style="color:#E06C75;">$IoTDB_SBIN_HOME</span><span style="color:#98C379;">/start-confignode.sh</span></span> |
| <span class="line"><span style="color:#E06C75;">Restart</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">on-failure</span></span> |
| <span class="line"><span style="color:#E06C75;">SuccessExitStatus</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">143</span></span> |
| <span class="line"><span style="color:#E06C75;">RestartSec</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">5</span></span> |
| <span class="line"><span style="color:#E06C75;">StartLimitInterval</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">600s</span></span> |
| <span class="line"><span style="color:#E06C75;">StartLimitBurst</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">3</span></span> |
| <span class="line"><span style="color:#E06C75;">RestartPreventExitStatus</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">SIGKILL</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">[Install]</span></span> |
| <span class="line"><span style="color:#E06C75;">WantedBy</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">multi-user.target</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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>Note: The above is the standard format of the <code>iotdb-confignode.service</code> file. The formats of <code>iotdb-datanode.service</code> and <code>iotdb-ainode.service</code> are similar.</p><h2 id="_6-notes" tabindex="-1"><a class="header-anchor" href="#_6-notes"><span>6. Notes</span></a></h2><ol><li><p><strong>Process Daemon Mechanism</strong></p><ul><li><strong>Auto-restart</strong>: The system will auto-restart the service if it fails to start or exits abnormally during runtime (e.g., OOM).</li><li><strong>No restart</strong>: Normal exits (e.g., executing <code>kill</code>, <code>./sbin/stop-xxx.sh</code>, or <code>systemctl stop</code>) will not trigger auto-restart.</li></ul></li><li><p><strong>Log Location</strong></p><ul><li>All runtime logs are stored in the <code>logs</code> folder under the IoTDB installation directory. Refer to this directory for troubleshooting.</li></ul></li><li><p><strong>Cluster Status Check</strong></p><ul><li>After service startup, execute <code>./sbin/start-cli.sh</code> and run the <code>show cluster</code> command to view the cluster status.</li></ul></li><li><p><strong>Fault Recovery Procedure</strong></p><ul><li>If the service status is <code>failed</code>, after fixing the issue, <strong>you must first execute <code>systemctl daemon-reload</code></strong> before running <code>systemctl start</code>, otherwise startup will fail.</li></ul></li><li><p><strong>Configuration Activation</strong></p><ul><li>After modifying the <code>daemon-xxx.sh</code> script, execute <code>systemctl daemon-reload</code> to re-register the service for new configurations to take effect.</li></ul></li><li><p><strong>Startup Mode Compatibility</strong></p><ul><li>Services started via <code>systemctl start</code> can be stopped using <code>./sbin/stop</code> (no restart triggered).</li><li>Processes started via <code>./sbin/start</code> cannot be monitored via <code>systemctl</code>.</li></ul></li></ol></div><!----><!----><!----></div><footer class="vp-page-meta"><div class="vp-meta-item edit-link"><a class="auto-link external-link vp-meta-label" href="https://github.com/apache/iotdb-docs/edit/main/src/UserGuide/latest-Table/User-Manual/Auto-Start-On-Boot_apache.md" aria-label="Found Error? Edit this page on GitHub" rel="noopener noreferrer" target="_blank"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon" name="edit"><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><!--]-->Found Error? Edit this page on GitHub<!----></a></div><div class="vp-meta-item git-info"><div class="update-time"><span class="vp-meta-label">Last Updated: </span><time class="vp-meta-info" datetime="2026-04-22T04:07:31.000Z" data-allow-mismatch>4/22/26, 4:07 AM</time></div><!----></div></footer><nav class="vp-page-nav"><a class="route-link auto-link prev" href="/UserGuide/latest-Table/User-Manual/Maintenance-commands_apache.html" aria-label="Maintenance statement"><div class="hint"><span class="arrow start"></span>Prev</div><div class="link"><!---->Maintenance statement</div></a><!----></nav><!----><!----><!--]--></main><!--]--><footer class="site-footer"><span id="doc-version" style="display:none;">latest-Table</span><p class="copyright-text">Copyright © 2026 The Apache Software Foundation. |
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