使用 dmctl 运维集群

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: v2.0.3 Git Commit Hash: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Git Branch: release-2.0 UTC Build Time: yyyy-mm-dd hh:mm:ss Go Version: go version go1.13 linux/amd64 » help DM control Usage: dmctl [command] Available Commands: check-task Checks the configuration file of the task. config Commands to import/export config. get-config Gets the configuration. handle-error `skip`/`replace`/`revert` the current error event or a specific binlog position (binlog-pos) event. help 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-schema `get`/`set`/`remove` the schema for an upstream table. operate-source `create`/`stop`/`show` upstream MySQL/MariaDB source. pause-relay Pauses DM-worker's relay unit. pause-task Pauses a specified running task. 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. show-ddl-locks Shows un-resolved DDL locks. start-task Starts a task as defined in the configuration file. stop-task Stops a specified task. unlock-ddl-lock Unlocks DDL lock forcefully. 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: check-task check-task <config-file> [--error count] [--warn count] config commands to import/export config get-config get-config <task | master | worker | source> <name> [--file filename] handle-error handle-error <task-name | task-file> [-s source ...] [-b binlog-pos] <skip/replace/revert> [replace-sql1;replace-sql2;] list-member list-member [--leader] [--master] [--worker] [--name master-name/worker-name ...] offline-member offline-member <--master/--worker> <--name master-name/worker-name> operate-leader operate-leader <operate-type> operate-schema operate-schema <operate-type> <-s source ...> <task-name | task-file> <-d database> <-t table> [schema-file] operate-source operate-source <operate-type> [config-file ...] [--print-sample-config] pause-relay pause-relay <-s source ...> pause-task pause-task [-s source ...] <task-name | task-file> purge-relay purge-relay <-s source> <-f filename> [--sub-dir directory] query-status query-status [-s source ...] [task-name | task-file] [--more] resume-relay resume-relay <-s source ...> resume-task resume-task [-s source ...] <task-name | task-file> show-ddl-locks show-ddl-locks [-s source ...] [task-name | task-file] start-task start-task [-s source ...] [--remove-meta] <config-file> stop-task stop-task [-s source ...] <task-name | task-file> unlock-ddl-lock unlock-ddl-lock [-s source ...] <lock-ID> Special Commands: --encrypt Encrypts plaintext to ciphertext. --decrypt Decrypts ciphertext to plaintext. Global Options: --V Prints version and exit. --config Path to configuration file. --master-addr Master API server address. --rpc-timeout RPC timeout, default is 10m. --ssl-ca Path of file that contains list of trusted SSL CAs for connection. --ssl-cert Path of file that contains X509 certificate in PEM format for connection. --ssl-key Path of file that contains X509 key in PEM format for connection.

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