--- title: "service update" description: "The service update command description and usage" keywords: ["service, update"] --- # service update ```Markdown 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 []) --force Force update even if no changes require it --group-add value Add additional user groups to the container (default []) --group-rm value Remove previously added user groups from the container (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) --rollback Rollback to previous specification --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-max-failure-ratio value Failure rate to tolerate during an update --update-monitor duration Duration after each task update to monitor for failure (default 0s) --update-parallelism uint Maximum number of tasks updated simultaneously (0 to update all at once) (default 1) -u, --user string Username or UID (format: [:]) --with-registry-auth Send registry authentication details to Swarm agents -w, --workdir string Working directory inside the container ``` Updates a service as described by the specified parameters. This command has to be run targeting a manager node. The parameters are the same as [`docker service create`](service_create.md). Please look at the description there for further information. Normally, updating a service will only cause the service's tasks to be replaced with new ones if a change to the service requires recreating the tasks for it to take effect. For example, only changing the `--update-parallelism` setting will not recreate the tasks, because the individual tasks are not affected by this setting. However, the `--force` flag will cause the tasks to be recreated anyway. This can be used to perform a rolling restart without any changes to the service parameters. ## Examples ### Update a service ```bash $ docker service update --limit-cpu 2 redis ``` ### Perform a rolling restart with no parameter changes ```bash $ docker service update --force --update-parallelism 1 --update-delay 30s redis ``` In this example, the `--force` flag causes the service's tasks to be shut down and replaced with new ones even though none of the other parameters would normally cause that to happen. The `--update-parallelism 1` setting ensures that only one task is replaced at a time (this is the default behavior). The `--update-delay 30s` setting introduces a 30 second delay between tasks, so that the rolling restart happens gradually. ### Adding and removing mounts Use the `--mount-add` or `--mount-rm` options add or remove a service's bind-mounts or volumes. The following example creates a service which mounts the `test-data` volume to `/somewhere`. The next step updates the service to also mount the `other-volume` volume to `/somewhere-else`volume, The last step unmounts the `/somewhere` mount point, effectively removing the `test-data` volume. Each command returns the service name. - The `--mount-add` flag takes the same parameters as the `--mount` flag on `service create`. Refer to the [volumes and bind-mounts](service_create.md#volumes-and-bind-mounts-mount) section in the `service create` reference for details. - The `--mount-rm` flag takes the `target` path of the mount. ```bash $ 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 ``` ## Related information * [service create](service_create.md) * [service inspect](service_inspect.md) * [service ps](service_ps.md) * [service ls](service_ls.md) * [service rm](service_rm.md)