mirror of https://github.com/docker/cli.git
46 lines
1.6 KiB
Markdown
46 lines
1.6 KiB
Markdown
---
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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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---
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# swarm update
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```markdown
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Usage: docker swarm update [OPTIONS]
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Update the swarm
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Options:
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--autolock Enable or disable manager autolocking (requiring an unlock key to start a stopped manager)
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--cert-expiry duration Validity period for node certificates (ns|us|ms|s|m|h) (default 2160h0m0s)
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--dispatcher-heartbeat duration Dispatcher heartbeat period (ns|us|ms|s|m|h) (default 5s)
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--external-ca value Specifications of one or more certificate signing endpoints
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--help Print usage
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--max-snapshots int Number of additional Raft snapshots to retain
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--snapshot-interval int Number of log entries between Raft snapshots
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--task-history-limit int Task history retention limit (default 5)
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```
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Updates a swarm with new parameter values. This command must target a manager node.
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```bash
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$ docker swarm update --cert-expiry 720h
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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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