Delete the service running on the swarm

The remaining steps in the tutorial don’t use the helloworld service, so now you can delete the service from the swarm.

If you haven’t already, open a terminal and ssh into the machine where you run your manager node. For example, the tutorial uses a machine named manager1.
Run docker service rm helloworld to remove the helloworld service.
```
$ docker service rm helloworld

helloworld
```
Run docker service inspect <SERVICE-ID> to verify that the swarm manager removed the service. The CLI returns a message that the service is not found:
```
$ docker service inspect helloworld
[]
Error: no such service: helloworld
```

Even though the service no longer exists, the task containers take a few seconds to clean up. You can use docker ps on the nodes to verify when the tasks have been removed.

$ docker ps

    CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
    db1651f50347        alpine:latest       "ping docker.com"        44 minutes ago      Up 46 seconds                           helloworld.5.9lkmos2beppihw95vdwxy1j3w
    43bf6e532a92        alpine:latest       "ping docker.com"        44 minutes ago      Up 46 seconds                           helloworld.3.a71i8rp6fua79ad43ycocl4t2
    5a0fb65d8fa7        alpine:latest       "ping docker.com"        44 minutes ago      Up 45 seconds                           helloworld.2.2jpgensh7d935qdc857pxulfr
    afb0ba67076f        alpine:latest       "ping docker.com"        44 minutes ago      Up 46 seconds                           helloworld.4.1c47o7tluz7drve4vkm2m5olx
    688172d3bfaa        alpine:latest       "ping docker.com"        45 minutes ago      Up About a minute                       helloworld.1.74nbhb3fhud8jfrhigd7s29we

$ docker ps
   CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS

What’s next?

In the next step of the tutorial, you set up a new service and apply a rolling update.

tutorial, cluster management, swarm, service

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https://docs.docker.com/v18.09/engine/swarm/swarm-tutorial/delete-service/