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`/`update`/`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.