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
decrypt Decrypts cipher text to plain text
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
decrypt Decrypts cipher text to plain text
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.