mirror of https://github.com/docker/cli.git
156 lines
7.7 KiB
Markdown
156 lines
7.7 KiB
Markdown
---
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title: "service update"
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description: "The service update command description and usage"
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keywords: "service, update"
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---
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<!-- This file is maintained within the docker/docker Github
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# service update
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```Markdown
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Usage: docker service update [OPTIONS] SERVICE
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Update a service
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Options:
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--args string Service command args
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--constraint-add stringSlice Add or update a placement constraint
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--constraint-rm list Remove a constraint (default [])
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--container-label-add list Add or update a container label (default [])
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--container-label-rm list Remove a container label by its key (default [])
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--dns-add list Add or update custom DNS servers (default [])
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--dns-options-add list Add or update DNS options (default [])
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--dns-options-rm list Remove DNS options (default [])
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--dns-rm list Remove custom DNS servers (default [])
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--dns-search-add list Add or update custom DNS search domains (default [])
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--dns-search-rm list Remove DNS search domains (default [])
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--endpoint-mode string Endpoint mode (vip or dnsrr)
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--env-add list Add or update an environment variable (default [])
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--env-rm list Remove an environment variable (default [])
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--force Force update even if no changes require it
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--group-add stringSlice Add an additional supplementary user group to the container
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--group-rm list Remove a previously added supplementary user group from the container (default [])
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--health-cmd string Command to run to check health
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--health-interval duration-ptr Time between running the check (default none)
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--health-retries int Consecutive failures needed to report unhealthy
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--health-timeout duration-ptr Maximum time to allow one check to run (default none)
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--help Print usage
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--image string Service image tag
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--label-add list Add or update a service label (default [])
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--label-rm list Remove a label by its key (default [])
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--limit-cpu NanoCPUs Limit CPUs (default 0.000)
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--limit-memory MemoryBytes Limit Memory (default 0 B)
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--log-driver string Logging driver for service
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--log-opt list Logging driver options (default [])
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--mount-add mount Add or update a mount on a service
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--mount-rm list Remove a mount by its target path (default [])
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--no-healthcheck Disable any container-specified HEALTHCHECK
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--publish-add list Add or update a published port (default [])
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--publish-rm list Remove a published port by its target port (default [])
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--replicas uint64-ptr Number of tasks (default none)
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--reserve-cpu NanoCPUs Reserve CPUs (default 0.000)
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--reserve-memory MemoryBytes Reserve Memory (default 0 B)
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--restart-condition string Restart when condition is met (none, on-failure, or any)
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--restart-delay duration-ptr Delay between restart attempts (default none)
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--restart-max-attempts uint64-ptr Maximum number of restarts before giving up (default none)
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--restart-window duration-ptr Window used to evaluate the restart policy (default none)
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--rollback Rollback to previous specification
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--stop-grace-period duration-ptr Time to wait before force killing a container (default none)
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-t, --tty Allocate a pseudo-TTY
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--update-delay duration Delay between updates
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--update-failure-action string Action on update failure (pause|continue) (default "pause")
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--update-max-failure-ratio float32 Failure rate to tolerate during an update
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--update-monitor duration Duration after each task update to monitor for failure
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--update-parallelism uint Maximum number of tasks updated simultaneously (0 to update all at once) (default 1)
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-u, --user string Username or UID (format: <name|uid>[:<group|gid>])
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--with-registry-auth Send registry authentication details to swarm agents
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-w, --workdir string Working directory inside the container
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```
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Updates a service as described by the specified parameters. This command has to be run targeting a manager node.
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The parameters are the same as [`docker service create`](service_create.md). Please look at the description there
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for further information.
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Normally, updating a service will only cause the service's tasks to be replaced with new ones if a change to the
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service requires recreating the tasks for it to take effect. For example, only changing the
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`--update-parallelism` setting will not recreate the tasks, because the individual tasks are not affected by this
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setting. However, the `--force` flag will cause the tasks to be recreated anyway. This can be used to perform a
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rolling restart without any changes to the service parameters.
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## Examples
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### Update a service
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```bash
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$ docker service update --limit-cpu 2 redis
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```
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### Perform a rolling restart with no parameter changes
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```bash
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$ docker service update --force --update-parallelism 1 --update-delay 30s redis
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```
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In this example, the `--force` flag causes the service's tasks to be shut down
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and replaced with new ones even though none of the other parameters would
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normally cause that to happen. The `--update-parallelism 1` setting ensures
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that only one task is replaced at a time (this is the default behavior). The
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`--update-delay 30s` setting introduces a 30 second delay between tasks, so
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that the rolling restart happens gradually.
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### Adding and removing mounts
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Use the `--mount-add` or `--mount-rm` options add or remove a service's bind-mounts
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or volumes.
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The following example creates a service which mounts the `test-data` volume to
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`/somewhere`. The next step updates the service to also mount the `other-volume`
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volume to `/somewhere-else`volume, The last step unmounts the `/somewhere` mount
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point, effectively removing the `test-data` volume. Each command returns the
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service name.
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- The `--mount-add` flag takes the same parameters as the `--mount` flag on
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`service create`. Refer to the [volumes and
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bind-mounts](service_create.md#volumes-and-bind-mounts-mount) section in the
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`service create` reference for details.
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- The `--mount-rm` flag takes the `target` path of the mount.
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```bash
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$ docker service create \
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--name=myservice \
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--mount \
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type=volume,source=test-data,target=/somewhere \
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nginx:alpine \
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myservice
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myservice
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$ docker service update \
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--mount-add \
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type=volume,source=other-volume,target=/somewhere-else \
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myservice
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myservice
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$ docker service update --mount-rm /somewhere myservice
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myservice
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```
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## Related information
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* [service create](service_create.md)
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* [service inspect](service_inspect.md)
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* [service ps](service_ps.md)
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* [service ls](service_ls.md)
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* [service rm](service_rm.md)
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