使用 dmctl 运维 TiDB Data Migration 集群

dmctl 是用来运维 DM 集群的命令行工具,支持交互模式和命令模式。

dmctl 交互模式

进入交互模式,与 DM-master 进行交互:

./dmctl --master-addr 172.16.30.14:8261
Welcome to dmctl Release Version: ${version} Git Commit Hash: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Git Branch: release-x.x UTC Build Time: yyyy-mm-dd hh:mm:ss Go Version: go version gox.xx linux/amd64 » help DM control Usage: dmctl [command] Available Commands: binlog manage or show binlog operations binlog-schema manage or show table schema in schema tracker check-task Checks the configuration file of the task config manage config operations encrypt Encrypts plain text to cipher text help Gets help about any command list-member Lists member information offline-member Offlines member which has been closed operate-leader `evict`/`cancel-evict` the leader operate-source `create`/`stop`/`show` upstream MySQL/MariaDB source pause-relay Pauses DM-worker's relay unit pause-task Pauses a specified running task or all (sub)tasks bound to a source purge-relay Purges relay log files of the DM-worker according to the specified filename query-status Queries task status resume-relay Resumes DM-worker's relay unit resume-task Resumes a specified paused task or all (sub)tasks bound to a source shard-ddl-lock maintain or show shard-ddl locks information start-relay Starts workers pulling relay log for a source start-task Starts a task as defined in the configuration file stop-relay Stops workers pulling relay log for a source stop-task Stops a specified task or all (sub)tasks bound to a source transfer-source Transfers a upstream MySQL/MariaDB source to a free worker Flags: -h, --help help for dmctl -s, --source strings MySQL Source ID. Use "dmctl [command] --help" for more information about a command.

dmctl 命令模式

命令模式跟交互模式的区别是,执行命令时只需要在 dmctl 命令后紧接着执行任务操作,任务操作同交互模式的参数一致。

./dmctl --master-addr 172.16.30.14:8261 start-task task.yaml ./dmctl --master-addr 172.16.30.14:8261 stop-task task ./dmctl --master-addr 172.16.30.14:8261 query-status export DM_MASTER_ADDR="172.16.30.14:8261" ./dmctl query-status
Available Commands: binlog manage or show binlog operations binlog-schema manage or show table schema in schema tracker check-task Checks the configuration file of the task config manage config operations encrypt Encrypts plain text to cipher text help Gets help about any command list-member Lists member information offline-member Offlines member which has been closed operate-leader `evict`/`cancel-evict` the leader operate-source `create`/`stop`/`show` upstream MySQL/MariaDB source pause-relay Pauses DM-worker's relay unit pause-task Pauses a specified running task or all (sub)tasks bound to a source purge-relay Purges relay log files of the DM-worker according to the specified filename query-status Queries task status resume-relay Resumes DM-worker's relay unit resume-task Resumes a specified paused task or all (sub)tasks bound to a source shard-ddl-lock maintain or show shard-ddl locks information start-relay Starts workers pulling relay log for a source start-task Starts a task as defined in the configuration file stop-relay Stops workers pulling relay log for a source stop-task Stops a specified task or all (sub)tasks bound to a source transfer-source Transfers a upstream MySQL/MariaDB source to a free worker Flags: --config string Path to config file. -h, --help help for dmctl --master-addr string Master API server address, this parameter is required when interacting with the dm-master --rpc-timeout string RPC timeout, default is 10m. (default "10m") -s, --source strings MySQL Source ID. --ssl-ca string Path of file that contains list of trusted SSL CAs for connection. --ssl-cert string Path of file that contains X509 certificate in PEM format for connection. --ssl-key string Path of file that contains X509 key in PEM format for connection. -V, --version Prints version and exit. Use "dmctl [command] --help" for more information about a command.

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