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After you complete the tutorial setup steps, you’re ready to create a swarm. Make sure the Docker Engine daemon is started on the host machines.
Open a terminal and ssh into the machine where you want to run your manager
node. For example, the tutorial uses a machine named
Run the following command to create a new swarm:
docker swarm init --advertise-addr <MANAGER-IP>
In the tutorial, the following command creates a swarm on the
$ docker swarm init --advertise-addr 192.168.99.100 Swarm initialized: current node (dxn1zf6l61qsb1josjja83ngz) is now a manager. To add a worker to this swarm, run the following command: docker swarm join \ --token SWMTKN-1-49nj1cmql0jkz5s954yi3oex3nedyz0fb0xx14ie39trti4wxv-8vxv8rssmk743ojnwacrr2e7c \ 192.168.99.100:2377 To add a manager to this swarm, run the following command: docker swarm join \ --token SWMTKN-1-61ztec5kyafptydic6jfc1i33t37flcl4nuipzcusor96k7kby-5vy9t8u35tuqm7vh67lrz9xp6 \ 192.168.99.100:2377
--advertise-addr flag configures the manager node to publish its
192.168.99.100. The other nodes in the swarm must be able
to access the manager at the IP address.
The output incudes the commands to join new nodes to the swarm. Nodes will
join as managers or workers depending on the value for the
docker info to view the current state of the swarm:
$ docker info Containers: 2 Running: 0 Paused: 0 Stopped: 2 ...snip... Swarm: active NodeID: dxn1zf6l61qsb1josjja83ngz Is Manager: true Managers: 1 Nodes: 1 ...snip...
docker node ls command to view information about nodes:
$ docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS dxn1zf6l61qsb1josjja83ngz * manager1 Ready Active Leader
* next to the node id indicates that you’re currently connected on
Docker Engine swarm mode automatically names the node for the machine host name. The tutorial covers other columns in later steps.
In the next section of the tutorial, we’ll add two more nodes to the cluster.