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--><h2 id="端云协同" tabindex="-1"><a class="header-anchor" href="#端云协同" aria-hidden="true">#</a> 端云协同</h2><h3 id="tsfile-同步工具" tabindex="-1"><a class="header-anchor" href="#tsfile-同步工具" aria-hidden="true">#</a> TsFile 同步工具</h3><h4 id="介绍" tabindex="-1"><a class="header-anchor" href="#介绍" aria-hidden="true">#</a> 介绍</h4><p>同步工具是定期将本地磁盘中新增的已持久化的 tsfile 文件上传至云端并加载到 IoTDB 的套件工具。</p><p>在同步工具的发送端，同步模块是一个独立的进程，独立于本地的 IoTDB。通过独立的脚本进行启动和关闭（详见本章节<code>使用方式</code>)，同步的频率周期可由用户设置。</p><p>在同步工具的接收端，同步模块内嵌于 IoTDB 的引擎，和 IoTDB 处于同一个进程中。同步模块监听一个独立的端口，该端口可由用户设置（详见本章节<code>配置参数</code>)。用户使用前，需要在同步接收端设置同步白名单，以网段形式表示，接收端的同步模块只接受位于白名单网段中的发送端同步的数据。</p><p>同步工具具有多对一的发送-接受模式，即一个同步接收端可以同时接受多个同步发送端传输的数据，一个同步发送端只能向一个同步接收端发送数据。</p><blockquote><p>注意：在使用同步工具前，同步工具的接收端和发送端需要单独配置。</p></blockquote><h4 id="应用场景" tabindex="-1"><a class="header-anchor" href="#应用场景" aria-hidden="true">#</a> 应用场景</h4><p>以一个工厂应用为例，通常有多个分厂和多个总厂，每个分厂中使用一个 IoTDB 实例收集数据，然后将数据定时汇总到总厂中进行备份或者分析等，一个总厂可以接收来自多个分厂的数据，在这种场景下每个 IoTDB 实例所管理的设备各不相同。</p><p>在 sync 模块中，每个分厂是发送端，总厂是接收端，发送端定时将数据同步给接收端，在上述应用场景下一个设备的数据只能由一个发送端来收集，因此多个发送端同步的数据之间必须是没有设备重叠的，否则不符合 sync 功能的应用场景。</p><p>当出现异常场景时，即两个或两个以上的发送端向同一个接收端同步相同设备（其存储组设为 <a href="http://root.sg" target="_blank" rel="noopener noreferrer">root.sg<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>) 的数据时，后被接收端收到的含有该设备数据的发送端的 <a href="http://root.sg" target="_blank" rel="noopener noreferrer">root.sg<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> 数据将会被拒绝接收。示例：发送端 1 向接收端同步存储组 root.sg1 和 root.sg2, 发送端 2 向接收端同步存储组 root.sg2 和 root.sg3, 均包括时间序列 root.sg2.d0.s0, 若接收端先接收到发送端 1 的 root.sg2.d0.s0 的数据，那么接收端将拒绝发送端 2 的 root.sg2 同步的数据。</p><h4 id="注意事项" tabindex="-1"><a class="header-anchor" href="#注意事项" aria-hidden="true">#</a> 注意事项</h4><p>sync功能开启之后，发送端的 alter timeseries add tag 语句将不会被同步到接收端</p><h4 id="配置参数" tabindex="-1"><a class="header-anchor" href="#配置参数" aria-hidden="true">#</a> 配置参数</h4><h5 id="同步工具接收端" tabindex="-1"><a class="header-anchor" href="#同步工具接收端" aria-hidden="true">#</a> 同步工具接收端</h5><p>同步工具接收端的参数配置位于 IoTDB 的配置文件 iotdb-engine.properties 中，其安装目录为$IOTDB_HOME/conf/iotdb-engine.properties。在该配置文件中，有四个参数和同步接收端有关，配置说明如下：</p><table><thead><tr><th>参数名</th><th>is_sync_enable</th></tr></thead><tbody><tr><td>描述</td><td>同步功能开关，配置为 true 表示接收端允许接收同步的数据并加载，设置为 false 的时候表示接收端不允许接收同步的数据</td></tr><tr><td>类型</td><td>Boolean</td></tr><tr><td>默认值</td><td>false</td></tr><tr><td>改后生效方式</td><td>重启服务生效</td></tr></tbody></table><table><thead><tr><th>参数名</th><th>ip_white_list</th></tr></thead><tbody><tr><td>描述</td><td>设置同步功能发送端 IP 地址的白名单，以网段的形式表示，多个网段之间用逗号分隔。发送端向接收端同步数据时，只有当该发送端 IP 地址处于该白名单设置的网段范围内，接收端才允许同步操作。如果白名单为空，则接收端不允许任何发送端同步数据。默认接收端接受全部 IP 的同步请求。</td></tr><tr><td>类型</td><td>String</td></tr><tr><td>默认值</td><td>0.0.0.0/0</td></tr><tr><td>改后生效方式</td><td>重启服务生效</td></tr></tbody></table><table><thead><tr><th>参数名</th><th>sync_server_port</th></tr></thead><tbody><tr><td>描述</td><td>同步接收端服务器监听接口，请确认该端口不是系统保留端口并且未被占用。参数 is_sync_enable 设置为 true 时有效，参数 is_sync_enable 设置为 false 时无效</td></tr><tr><td>类型</td><td>Short Int : [0,65535]</td></tr><tr><td>默认值</td><td>5555</td></tr><tr><td>改后生效方式</td><td>重启服务生效</td></tr></tbody></table><h5 id="同步工具发送端" tabindex="-1"><a class="header-anchor" href="#同步工具发送端" aria-hidden="true">#</a> 同步工具发送端</h5><p>同步功能发送端的参数配置在一个单独的配置文件中，其安装目录为<code>$IOTDB_HOME/conf/iotdb-sync-client.properties</code>。在该配置文件中，有五个参数和同步发送端有关，配置说明如下：</p><table><thead><tr><th>参数名</th><th>server_ip</th></tr></thead><tbody><tr><td>描述</td><td>同步接收端的 IP 地址</td></tr><tr><td>类型</td><td>String</td></tr><tr><td>默认值</td><td>127.0.0.1</td></tr><tr><td>改后生效方式</td><td>重启同步功能发送端生效</td></tr></tbody></table><table><thead><tr><th>参数名</th><th>server_port</th></tr></thead><tbody><tr><td>描述</td><td>同步接收端服务器监听端口，需要保证该端口和同步接收端配置的监听端口一致</td></tr><tr><td>类型</td><td>Short Int : [0,65535]</td></tr><tr><td>默认值</td><td>5555</td></tr><tr><td>改后生效方式</td><td>重启同步功能发送端生效</td></tr></tbody></table><table><thead><tr><th>参数名</th><th>sync_period_in_second</th></tr></thead><tbody><tr><td>描述</td><td>同步周期，两次同步任务开始时间的间隔，单位为秒 (s)</td></tr><tr><td>类型</td><td>Int : [0,2147483647]</td></tr><tr><td>默认值</td><td>600</td></tr><tr><td>改后生效方式</td><td>重启同步功能发送端生效</td></tr></tbody></table><table><thead><tr><th>参数名</th><th>sync_storage_groups</th></tr></thead><tbody><tr><td>描述</td><td>进行同步的存储组列表，存储组间用逗号分隔；若列表设置为空表示同步所有存储组，默认为空</td></tr><tr><td>类型</td><td>String</td></tr><tr><td>示例</td><td>root.sg1, root.sg2</td></tr><tr><td>改后生效方式</td><td>重启同步功能发送端生效</td></tr></tbody></table><table><thead><tr><th>参数名</th><th>max_number_of_sync_file_retry</th></tr></thead><tbody><tr><td>描述</td><td>发送端同步文件到接收端失败时的最大重试次数</td></tr><tr><td>类型</td><td>Int : [0,2147483647]</td></tr><tr><td>示例</td><td>5</td></tr><tr><td>改后生效方式</td><td>重启同步功能发送端生效</td></tr></tbody></table><h4 id="使用方式" tabindex="-1"><a class="header-anchor" href="#使用方式" aria-hidden="true">#</a> 使用方式</h4><h5 id="启动同步功能接收端" tabindex="-1"><a class="header-anchor" href="#启动同步功能接收端" aria-hidden="true">#</a> 启动同步功能接收端</h5><ol><li>配置接收端的参数，例如：</li></ol><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>	####################
	### Sync Server Configuration
	####################

	# Whether to open the sync_server_port for receiving data from sync client, the default is closed
	is_sync_enable=true

	# Sync server port to listen
	sync_server_port=5555

	# White IP list of Sync client.
	# Please use the form of network segment to present the range of IP, for example: 192.168.0.0/16
	# If there are more than one IP segment, please separate them by commas
	# The default is to allow all IP to sync
	ip_white_list=0.0.0.0/0
</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><ol start="2"><li>启动 IoTDB 引擎，同步功能接收端会同时启动，启动时 LOG 日志会出现<code>IoTDB: start SYNC ServerService successfully</code>字样，表示同步接收端启动成功。</li></ol><h5 id="关闭同步功能接收端" tabindex="-1"><a class="header-anchor" href="#关闭同步功能接收端" aria-hidden="true">#</a> 关闭同步功能接收端</h5><p>关闭 IoTDB，同步功能接收端会同时关闭。</p><h5 id="启动同步功能发送端" tabindex="-1"><a class="header-anchor" href="#启动同步功能发送端" aria-hidden="true">#</a> 启动同步功能发送端</h5><ol><li>配置发送端的参数</li></ol><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>	# Sync receiver server address
	server_ip=127.0.0.1

	# Sync receiver server port
	server_port=5555

	# The period time of sync process, the time unit is second.
	sync_period_in_second=600

	# This parameter represents storage groups that participate in the synchronization task, which distinguishes each storage group by comma.
	# If the list is empty, it means that all storage groups participate in synchronization.
	# By default, it is empty list.
	# sync_storage_groups = root.sg1, root.sg2

	# The maximum number of retry when syncing a file to receiver fails.
	max_number_of_sync_file_retry=5

</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 class="line-number"></div><div class="line-number"></div></div></div><ol start="2"><li>启动同步功能发送端</li></ol><p>用户可以使用<code>$IOTDB_HOME/tools</code>文件夹下的脚本启动同步功能的发送端 Linux 系统与 MacOS 系统启动命令如下：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>  Shell &gt;$IOTDB_HOME/tools/start-sync-client.sh
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Windows 系统启动命令如下：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>  Shell &gt;$IOTDB_HOME\tools\start-sync-client.bat
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h5 id="关闭同步功能发送端" tabindex="-1"><a class="header-anchor" href="#关闭同步功能发送端" aria-hidden="true">#</a> 关闭同步功能发送端</h5><p>用户可以使用<code>$IOTDB_HOME/tools</code>文件夹下的脚本关闭同步功能的发送端。 Linux 系统与 MacOS 系统停止命令如下：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>  Shell &gt;$IOTDB_HOME/tools/stop-sync-client.sh
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Windows 系统停止命令如下：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>  Shell &gt;$IOTDB_HOME\tools\stop-sync-client.bat
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