Usage: docker service update [OPTIONS] SERVICE Update a service Options: --args string Service command args --constraint-add list Add or update a placement constraint (default []) --constraint-rm list Remove a constraint (default []) --container-label-add list Add or update a container label (default []) --container-label-rm list Remove a container label by its key (default []) --dns-add list Add or update a custom DNS server (default []) --dns-option-add list Add or update a DNS option (default []) --dns-option-rm list Remove a DNS option (default []) --dns-rm list Remove a custom DNS server (default []) --dns-search-add list Add or update a custom DNS search domain (default []) --dns-search-rm list Remove a DNS search domain (default []) --endpoint-mode string Endpoint mode (vip or dnsrr) --env-add list Add or update an environment variable (default []) --env-rm list Remove an environment variable (default []) --force Force update even if no changes require it --group-add list Add an additional supplementary user group to the container (default []) --group-rm list Remove a previously added supplementary user group from the container (default []) --health-cmd string Command to run to check health --health-interval duration Time between running the check (ns|us|ms|s|m|h) --health-retries int Consecutive failures needed to report unhealthy --health-timeout duration Maximum time to allow one check to run (ns|us|ms|s|m|h) --help Print usage --host-add list Add or update a custom host-to-IP mapping (host:ip) (default []) --host-rm list Remove a custom host-to-IP mapping (host:ip) (default []) --hostname string Container hostname --image string Service image tag --label-add list Add or update a service label (default []) --label-rm list Remove a label by its key (default []) --limit-cpu decimal Limit CPUs (default 0.000) --limit-memory bytes Limit Memory (default 0 B) --log-driver string Logging driver for service --log-opt list Logging driver options (default []) --mount-add mount Add or update a mount on a service --mount-rm list Remove a mount by its target path (default []) --no-healthcheck Disable any container-specified HEALTHCHECK --publish-add port Add or update a published port --publish-rm port Remove a published port by its target port --replicas uint Number of tasks --reserve-cpu decimal Reserve CPUs (default 0.000) --reserve-memory bytes Reserve Memory (default 0 B) --restart-condition string Restart when condition is met (none, on-failure, or any) --restart-delay duration Delay between restart attempts (ns|us|ms|s|m|h) --restart-max-attempts uint Maximum number of restarts before giving up --restart-window duration Window used to evaluate the restart policy (ns|us|ms|s|m|h) --rollback Rollback to previous specification --secret-add secret Add or update a secret on a service --secret-rm list Remove a secret (default []) --stop-grace-period duration Time to wait before force killing a container (ns|us|ms|s|m|h) -t, --tty Allocate a pseudo-TTY --update-delay duration Delay between updates (ns|us|ms|s|m|h) (default 0s) --update-failure-action string Action on update failure (pause|continue) (default "pause") --update-max-failure-ratio float Failure rate to tolerate during an update --update-monitor duration Duration after each task update to monitor for failure (ns|us|ms|s|m|h) (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: <name|uid>[:<group|gid>]) --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. 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.
$ docker service update --limit-cpu 2 redis
$ 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.
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-elsevolume, 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 section in the service create reference for details.
The --mount-rm flag takes the target path of the mount.
$ 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
Use the --secret-add or --secret-rm options add or remove a service's secrets.
The following example adds a secret named ssh-2 and removes ssh-1:
$ docker service update \ --secret-add source=ssh-2,target=ssh-2 \ --secret-rm ssh-1 \ myservice
Some flags of service update support the use of templating. See service create for the reference.