- Usage: docker service update [OPTIONS] SERVICE
-
- Update a service
-
- Options:
- --args string Service command args
- --constraint-add value Add or update placement constraints (default [])
- --constraint-rm value Remove a constraint (default [])
- --container-label-add value Add or update container labels (default [])
- --container-label-rm value Remove a container label by its key (default [])
- --endpoint-mode string Endpoint mode (vip or dnsrr)
- --env-add value Add or update environment variables (default [])
- --env-rm value Remove an environment variable (default [])
- --help Print usage
- --image string Service image tag
- --label-add value Add or update service labels (default [])
- --label-rm value Remove a label by its key (default [])
- --limit-cpu value Limit CPUs (default 0.000)
- --limit-memory value Limit Memory (default 0 B)
- --log-driver string Logging driver for service
- --log-opt value Logging driver options (default [])
- --mount-add value Add or update a mount on a service
- --mount-rm value Remove a mount by its target path (default [])
- --name string Service name
- --publish-add value Add or update a published port (default [])
- --publish-rm value Remove a published port by its target port (default [])
- --replicas value Number of tasks (default none)
- --reserve-cpu value Reserve CPUs (default 0.000)
- --reserve-memory value Reserve Memory (default 0 B)
- --restart-condition string Restart when condition is met (none, on-failure, or any)
- --restart-delay value Delay between restart attempts (default none)
- --restart-max-attempts value Maximum number of restarts before giving up (default none)
- --restart-window value Window used to evaluate the restart policy (default none)
- --stop-grace-period value Time to wait before force killing a container (default none)
- --update-delay duration Delay between updates
- --update-failure-action string Action on update failure (pause|continue) (default "pause")
- --update-parallelism uint Maximum number of tasks updated simultaneously (0 to update all at once) (default 1)
- -u, --user string Username or UID
- --with-registry-auth Send registry authentication details to Swarm agents
- -w, --workdir string Working directory inside the container
通过指定的参数描述更新服务。这个命令必须在manager节点执行。这些参数与docker service create命令的参数一样。
示例
更新服务
- $ docker service update --limit-cpu 2 redis
添加和删除挂载
使用–mount-add 或 –mount-rm选项添加或删除一个服务的bind-mounts或volumes。
下面的示例创建一个服务并挂载test-data数据卷到/somewhere。下一步是更新服务添加挂载一个other-volume数据卷到/shomewhere-else,最后一步是取消/somewhere挂载点,将会删除test-data数据卷。每个命令返回服务名称。
–mount-add接受与service create的–mount选项一样的参数。
–mount-rm参数指定的是挂载点的目标路径。
- $ docker service create \
- --name=myservice \
- --mount \
- type=volume,source=test-data,target=/somewhere \
- nginx:alpine \
- myservice
-
- myservice
-
- $ docker service update \
- --mount-add \
- type=volume,source=other-volume,target=/somewhere-else \
- myservice
-
- myservice
-
- $ docker service update --mount-rm /somewhere myservice
-
- myservice