github.com/brahmaroutu/docker@v1.2.1-0.20160809185609-eb28dde01f16/docs/reference/commandline/swarm_update.md (about)

     1  <!--[metadata]>
     2  +++
     3  title = "swarm update"
     4  description = "The swarm update command description and usage"
     5  keywords = ["swarm, update"]
     6  [menu.main]
     7  parent = "smn_cli"
     8  +++
     9  <![end-metadata]-->
    10  
    11  # swarm update
    12  
    13  ```markdown
    14  Usage:  docker swarm update [OPTIONS]
    15  
    16  Update the swarm
    17  
    18  Options:
    19        --cert-expiry duration            Validity period for node certificates (default 2160h0m0s)
    20        --dispatcher-heartbeat duration   Dispatcher heartbeat period (default 5s)
    21        --external-ca value               Specifications of one or more certificate signing endpoints
    22        --help                            Print usage
    23        --task-history-limit int          Task history retention limit (default 5)
    24  ```
    25  
    26  Updates a swarm with new parameter values. This command must target a manager node.
    27  
    28  
    29  ```bash
    30  $ docker swarm update --cert-expiry 720h
    31  ```
    32  
    33  ## Related information
    34  
    35  * [swarm init](swarm_init.md)
    36  * [swarm join](swarm_join.md)
    37  * [swarm leave](swarm_leave.md)