2016-06-14 02:57:19 +00:00
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<!--[metadata]>
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+++
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title = "swarm init"
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description = "The swarm init command description and usage"
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keywords = ["swarm, init"]
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2016-06-20 11:54:53 +00:00
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advisory = "rc"
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2016-06-14 02:57:19 +00:00
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[menu.main]
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parent = "smn_cli"
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+++
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<![end-metadata]-->
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# swarm init
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Usage: docker swarm init [OPTIONS]
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Initialize a Swarm.
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Options:
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--auto-accept value Acceptance policy (default [worker,manager])
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--force-new-cluster Force create a new cluster from current state.
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--help Print usage
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--listen-addr value Listen address (default 0.0.0.0:2377)
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--secret string Set secret value needed to accept nodes into cluster
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Initialize a Swarm cluster. The docker engine targeted by this command becomes a manager
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in the newly created one node Swarm cluster.
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```bash
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$ docker swarm init --listen-addr 192.168.99.121:2377
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Swarm initialized: current node (1ujecd0j9n3ro9i6628smdmth) is now a manager.
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$ docker node ls
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ID NAME MEMBERSHIP STATUS AVAILABILITY MANAGER STATUS LEADER
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1ujecd0j9n3ro9i6628smdmth * manager1 Accepted Ready Active Reachable Yes
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```
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### --auto-accept value
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This flag controls node acceptance into the cluster. By default, both `worker` and `manager`
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nodes are auto accepted by the cluster. This can be changed by specifing what kinds of nodes
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can be auto-accepted into the cluster. If auto-accept is not turned on, then
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[node accept](node_accept.md) can be used to explicitly accept a node into the cluster.
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For example, the following initializes a cluster with auto-acceptance of workers, but not managers
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```bash
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$ docker swarm init --listen-addr 192.168.99.121:2377 --auto-accept worker
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Swarm initialized: current node (1m8cdsylxbf3lk8qriqt07hx1) is now a manager.
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```
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### `--force-new-cluster`
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This flag forces an existing node that was part of a quorum that was lost to restart as a single node Manager without losing its data
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### `--listen-addr value`
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The node listens for inbound Swarm manager traffic on this IP:PORT
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### `--secret string`
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Secret value needed to accept nodes into the Swarm
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## Related information
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* [swarm join](swarm_join.md)
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* [swarm leave](swarm_leave.md)
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* [swarm update](swarm_update.md)
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