document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/index.xml

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    <title>熔断 on ShardingSphere</title>
    <link>https://shardingsphere.apache.org/document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/</link>
    <description>Recent content in 熔断 on ShardingSphere</description>
    <generator>Hugo -- gohugo.io</generator>
    <language>en-us</language><atom:link href="https://shardingsphere.apache.org/document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/index.xml" rel="self" type="application/rss+xml" />
    <item>
      <title>ALTER READWRITE_SPLITTING RULE ENABLE/DISABLE</title>
      <link>https://shardingsphere.apache.org/document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/alter-readwrite-splitting-rule-enable-disable/</link>
      <pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate>
      
      <guid>https://shardingsphere.apache.org/document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/alter-readwrite-splitting-rule-enable-disable/</guid>
      <description>描述 ALTER READWRITE_SPLITTING RULE ENABLE/DISABLE 语法用于启用/禁用指定逻辑库中指定读写分离规则中的指定读数据存储单元。
语法定义 语法 铁路图  AlterReadwriteSplittingRule ::= &amp;#39;ALTER&amp;#39; &amp;#39;READWRITE_SPLITTING&amp;#39; &amp;#39;RULE&amp;#39; groupName (&amp;#39;ENABLE&amp;#39; | &amp;#39;DISABLE&amp;#39;) storageUnitName &amp;#39;FROM&amp;#39; databaseName groupName ::= identifier storageUnitName ::= identifier databaseName ::= identifier       补充说明  未指定 databaseName 时，默认是当前使用的 DATABASE。 如果也未使用 DATABASE 则会提示 No database selected。  示例  禁用指定逻辑库中指定读写分离规则中的指定读数据存储单元  ALTER READWRITE_SPLITTING RULE ms_group_0 DISABLE read_ds_0 FROM sharding_db;  启用指定逻辑库中指定读写分离规则中的指定读数据存储单元  ALTER READWRITE_SPLITTING RULE ms_group_0 ENABLE read_ds_0 FROM sharding_db;  禁用当前逻辑库中指定读写分离规则中的指定读数据存储单元  ALTER READWRITE_SPLITTING RULE ms_group_0 DISABLE read_ds_0;  启用当前逻辑库中指定读写分离规则中的指定读数据存储单元  ALTER READWRITE_SPLITTING RULE ms_group_1 ENABLE read_ds_0; 保留字 ALTER、READWRITE_SPLITTING、RULE、ENABLE、DISABLE</description>
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    <item>
      <title>SHOW STATUS FROM READWRITE_SPLITTING RULE</title>
      <link>https://shardingsphere.apache.org/document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/show-status-from-readwrite-splitting-rule/</link>
      <pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate>
      
      <guid>https://shardingsphere.apache.org/document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/show-status-from-readwrite-splitting-rule/</guid>
      <description>描述 SHOW STATUS FROM READWRITE_SPLITTING RULE 语法用于查询指定逻辑库中指定读写分离规则中读写分离存储单元状态。
语法 语法 铁路图  ShowStatusFromReadwriteSplittingRule ::= &amp;#39;SHOW&amp;#39; &amp;#39;STATUS&amp;#39; &amp;#39;FROM&amp;#39; &amp;#39;READWRITE_SPLITTING&amp;#39; (&amp;#39;RULES&amp;#39; | &amp;#39;RULE&amp;#39; groupName) (&amp;#39;FROM&amp;#39; databaseName)? groupName ::= identifier databaseName ::= identifier       补充说明  未指定 databaseName 时，默认是当前使用的 DATABASE。 如果也未使用 DATABASE 则会提示 No database selected。  返回值说明    列 说明     storage_unit 存储单元名称   status 存储单元状态    示例  查询指定逻辑库中指定读写分离规则中读写分离存储单元状态  SHOW STATUS FROM READWRITE_SPLITTING RULE ms_group_0 FROM sharding_db; mysql&amp;gt; SHOW STATUS FROM READWRITE_SPLITTING RULE ms_group_0 FROM sharding_db; +--------------+----------+ | storage_unit | status | +--------------+----------+ | ds_0 | disabled | +--------------+----------+ 1 rows in set (0.</description>
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    <item>
      <title>SHOW COMPUTE NODES</title>
      <link>https://shardingsphere.apache.org/document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/show-compute-nodes/</link>
      <pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate>
      
      <guid>https://shardingsphere.apache.org/document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/show-compute-nodes/</guid>
      <description>描述 SHOW COMPUTE NODES 语法用于查询计算节点信息。
语法 语法 铁路图  ShowComputeNodes ::= &amp;#39;SHOW&amp;#39; &amp;#39;COMPUTE&amp;#39; &amp;#39;NODES&amp;#39;       返回值说明    列 说明     instance_id 实例 id   instance_type 实例类型   host 主机地址   port 端口号   status 实例状态   mode_type 模式类型   worker_id worker id   labels 标签   version 版本    示例 mysql&amp;gt; SHOW COMPUTE NODES; +--------------------------------------+---------------+------------+------+--------+------------+-----------+--------+----------+ | instance_id | instance_type | host | port | status | mode_type | worker_id | labels | version | +--------------------------------------+---------------+------------+------+--------+------------+-----------+--------+----------+ | 3e84d33e-cb97-42f2-b6ce-f78fea0ded89 | PROXY | 127.</description>
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    <item>
      <title>ENABLE/DISABLE COMPUTE NODE</title>
      <link>https://shardingsphere.apache.org/document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/enable-disable-compute-node/</link>
      <pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate>
      
      <guid>https://shardingsphere.apache.org/document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/enable-disable-compute-node/</guid>
      <description>描述 ENABLE/DISABLE COMPUTE NODE 语法用于启用/禁用指定 proxy 实例。
语法定义 语法 铁路图  EnableDisableComputeNode ::= (&amp;#39;ENABLE&amp;#39; | &amp;#39;DISABLE&amp;#39;) &amp;#39;COMPUTE&amp;#39; &amp;#39;NODE&amp;#39; instanceId instanceId ::= string       补充说明   instanceId 需要通过 SHOW COMPUTE NODES 语法查询得到
  不可禁用当前正在使用的 proxy 实例
  示例  禁用指定 proxy 实例  DISABLE COMPUTE NODE &amp;#39;734bb086-b15d-4af0-be87-2372d8b6a0cd&amp;#39;;  启用指定 proxy 实例  ENABLE COMPUTE NODE &amp;#39;734bb086-b15d-4af0-be87-2372d8b6a0cd&amp;#39;; 保留字 ENABLE、DISABLE、COMPUTE、NODE
相关链接  保留字 SHOW COMPUTE NODES  </description>
    </item>
    
    <item>
      <title>LABEL|RELABEL COMPUTE NODE</title>
      <link>https://shardingsphere.apache.org/document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/label-relabel-compute-node/</link>
      <pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate>
      
      <guid>https://shardingsphere.apache.org/document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/label-relabel-compute-node/</guid>
      <description>描述 LABEL|RELABEL COMPUTE NODE 语法用于为 PROXY 实例添加标签。
语法 语法 铁路图  LableRelabelComputeNodes ::= (&amp;#39;LABEL&amp;#39; | &amp;#39;RELABEL&amp;#39;) &amp;#39;COMPUTE&amp;#39; &amp;#39;NODE&amp;#39; instance_id &amp;#39;WITH&amp;#39; labelName instance_id ::= string labelName ::= identifier       补充说明   instance_id 需要通过 SHOW COMPUTE NODES 语法查询获得
  RELABEL 用于为 PROXY 实例修改标签
  示例  为 PROXY 实例添加标签  LABEL COMPUTE NODE &amp;#34;0699e636-ade9-4681-b37a-65240c584bb3&amp;#34; WITH label_1;  为 PROXY 实例修改标签  RELABEL COMPUTE NODE &amp;#34;0699e636-ade9-4681-b37a-65240c584bb3&amp;#34; WITH label_2; 保留字 LABEL、RELABEL、COMPUTE、NODE 、WITH</description>
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    <item>
      <title>UNLABEL COMPUTE NODE</title>
      <link>https://shardingsphere.apache.org/document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/unlabel-compute-node/</link>
      <pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate>
      
      <guid>https://shardingsphere.apache.org/document/current/cn/user-manual/shardingsphere-proxy/distsql/syntax/ral/circuit-breaker/unlabel-compute-node/</guid>
      <description>描述 UNLABEL COMPUTE NODE 语法用于为 PROXY 实例去除指定标签。
语法 语法 铁路图  UnlabelComputeNode ::= &amp;#39;UNLABEL&amp;#39; &amp;#39;COMPUTE&amp;#39; &amp;#39;NODE&amp;#39; instance_id &amp;#39;WITH&amp;#39; labelName instance_id ::= string labelName ::= identifier       补充说明  instance_id 需要通过 SHOW COMPUTE NODES 语法查询获得  示例  为 PROXY 实例去除指定标签  UNLABEL COMPUTE NODE &amp;#34;0699e636-ade9-4681-b37a-65240c584bb3&amp;#34; WITH label_1; 保留字 UNLABEL、COMPUTE、NODE、WITH
相关链接  保留字 SHOW COMPUTE NODES  </description>
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