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docker-cli/components/engine/docs/reference/commandline/swarm_update.md
Ying Li 94be5a4238 Document the swarm root CA rotation CLI command. 
Signed-off-by: Ying Li <ying.li@docker.com>
Upstream-commit: 3adddab957024f0d1f196c207cdb7eee543dda48
Component: engine
2017-05-15 17:21:01 -07:00

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title, description, keywords
title description keywords
swarm update The swarm update command description and usage swarm, update

swarm update

Usage:  docker swarm update [OPTIONS]

Update the swarm

Options:
      --autolock                        Change manager autolocking setting (true|false)
      --cert-expiry duration            Validity period for node certificates (ns|us|ms|s|m|h) (default 2160h0m0s)
      --dispatcher-heartbeat duration   Dispatcher heartbeat period (ns|us|ms|s|m|h) (default 5s)
      --external-ca external-ca         Specifications of one or more certificate signing endpoints
      --help                            Print usage
      --max-snapshots uint              Number of additional Raft snapshots to retain
      --snapshot-interval uint          Number of log entries between Raft snapshots (default 10000)
      --task-history-limit int          Task history retention limit (default 5)

Description

Updates a swarm with new parameter values. This command must target a manager node.

Examples

$ docker swarm update --cert-expiry 720h

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