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<!--[metadata]>
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+++
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title = "swarm update"
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description = "The swarm update command description and usage"
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keywords = ["swarm, update"]
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advisory = "rc"
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[menu.main]
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parent = "smn_cli"
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+++
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<![end-metadata]-->
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# swarm update
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Usage: docker swarm update [OPTIONS]
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2016-06-14 20:36:37 -04:00
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update the Swarm.
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Options:
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--auto-accept value Auto acceptance policy (worker, manager or none)
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--external-ca value Specifications of one or more certificate signing endpoints
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--dispatcher-heartbeat duration Dispatcher heartbeat period (default 5s)
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--help Print usage
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--secret string Set secret value needed to accept nodes into cluster
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--task-history-limit int Task history retention limit (default 10)
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Updates a Swarm cluster with new parameter values. This command must target a manager node.
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```bash
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$ docker swarm update --auto-accept manager
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```
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## Related information
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* [swarm init](swarm_init.md)
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* [swarm join](swarm_join.md)
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* [swarm leave](swarm_leave.md)
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