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52 lines
1.7 KiB
Markdown
52 lines
1.7 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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<!-- This file is maintained within the docker/cli GitHub
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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 Change manager autolocking setting (true|false)
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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 external-ca Specifications of one or more certificate signing endpoints
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--help Print usage
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--max-snapshots uint Number of additional Raft snapshots to retain
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--snapshot-interval uint Number of log entries between Raft snapshots (default 10000)
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--task-history-limit int Task history retention limit (default 5)
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```
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## Description
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Updates a swarm with new parameter values. This command must target a manager node.
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## Examples
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```bash
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$ docker swarm update --cert-expiry 720h
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```
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## Related commands
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* [swarm ca](swarm_ca.md)
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* [swarm init](swarm_init.md)
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* [swarm join](swarm_join.md)
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* [swarm join-token](swarm_join_token.md)
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* [swarm leave](swarm_leave.md)
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* [swarm unlock](swarm_unlock.md)
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* [swarm unlock-key](swarm_unlock_key.md)
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