6db1c73da7
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
(cherry picked from commit 180f8c61bb)
Signed-off-by: Tibor Vass <tibor@docker.com>
39 lines
1.1 KiB
Markdown
39 lines
1.1 KiB
Markdown
<!--[metadata]>
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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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[menu.main]
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parent = "smn_cli"
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<![end-metadata]-->
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**Warning:** this command is part of the Swarm management feature introduced in Docker 1.12, and might be subject to non backward-compatible changes.
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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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--cert-expiry duration Validity period for node certificates (default 2160h0m0s)
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--dispatcher-heartbeat duration Dispatcher heartbeat period (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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--task-history-limit int Task history retention limit (default 5)
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```
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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 --cert-expirty 4000h0m0s
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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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