After you create a swarm, you can deploy a service to the swarm. For this tutorial, you also added worker nodes, but that is not a requirement to deploy a service.
Open a terminal and ssh into the machine where you run your manager node. For example, the tutorial uses a machine named manager1
.
Run the following command:
$ docker service create --replicas 1 --name helloworld alpine ping docker.com
9uk4639qpg7npwf3fn2aasksr
docker service create
command creates the service.--name
flag names the service helloworld
.--replicas
flag specifies the desired state of 1 running instance.alpine ping docker.com
define the service as an Alpine Linux container that executes the command ping docker.com
.Run docker service ls
to see the list of running services:
$ docker service ls
ID NAME SCALE IMAGE COMMAND
9uk4639qpg7n helloworld 1/1 alpine ping docker.com
Now you’ve deployed a service to the swarm, you’re ready to inspect the service.
tutorial, cluster management, swarm mode
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https://docs.docker.com/engine/swarm/swarm-tutorial/deploy-service/