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I've got a docker-compose.yml file and if I run docker swarm init I can:

$ docker stack deploy --compose-file=docker-compose.yml example

And it all works fine.

I gather though that I can't use docker stack deploy to deploy to a swarm my host isn't part of.

So I started a few Virtualbox instances:

$ docker-machine ls
NAME      ACTIVE   DRIVER       STATE     URL                         SWARM   DOCKER        ERRORS
manager   -        virtualbox   Running   tcp://192.168.99.102:2376           v17.05.0-ce
worker1   -        virtualbox   Running   tcp://192.168.99.100:2376           v17.05.0-ce
worker2   -        virtualbox   Running   tcp://192.168.99.101:2376           v17.05.0-ce

I've joined the workers to the manager.

$ docker-machine ssh worker1 "docker swarm join --token=${worker_token} --listen-addr $(docker-machine ip worker1) --advertise-addr $(docker-machine ip worker1) $(docker-machine ip manager)"
$ docker-machine ssh worker2 "docker swarm join --token=${worker_token} --listen-addr $(docker-machine ip worker2) --advertise-addr $(docker-machine ip worker2) $(docker-machine ip manager)"

I wondered if my host could join the swarm, run the stack deploy and leave it?

Attempting to join it fails.

Error response from daemon: can't initialize raft node: rpc error: code = 2 desc = could not connect to prospective new cluster member using its advertised address: rpc error: code = 4 desc = context deadline exceeded

So my question is, how can I deploy my docker-compose stack to a swarm I'm not a part of? Is copying the file up and running the stack deploy there really the way to do it?

rich
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2 Answers2

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This seems to be the best answer I have:

$ docker-machine scp docker-compose.yml manager:~/
$ docker-machine ssh manager docker stack deploy --compose-file=docker-compose.yml example
rich
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Another option, not requiring you to copy docker-compose.yml to the manager, would be to send the docker-compose.yml file to the manager on stdin:

docker-machine ssh manager docker stack deploy -c - example < docker-compose.yml

I provide some examples of this here: How can I remotely connect to docker swarm?

nachbar
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