Still experimental in Swarm Mode?

[ThatRendle]

The README hasn't been updated in a while; is this image still considered experimental for Swarm Mode, or is it stable?

[Jascen]

I am also interested in knowing if this is working with Swarm (and offically approved).

[markvr]

We use it with swarm and it works fine. You need to run it on master nodes, and mount the docker socket into the service.

[charandas]

@markvr I am curious if you are using Compose v3 with Swarm. The README only mentions Compose v2 support. I notice that with v3, if I use links, I get messages saying, ignoring links field from docker.

The reason I ask is:

docker deploy file.dab # is experiemental, even though compose v2 is able to provide file.dab

while

docker deploy STACK1 # is not experimental, but requires compose v3

so my clear preference is for the latter, but when I go down that route, the proxy always shows services as unavailable (503s).

I guess, a question for maintainers is, when is Compose v3 support coming? Can we provide cues to the service using some ENV vars instead of using the deprecated links option?

[charandas]

If it helps, I have also gone through the process of making an overlay network and ensuring, that all my services have the networks block referencing that network.

I am running Swarm on rancher with edge Docker (maybe that's not such a great idea), and am opting out of their managed network by using docker commands, specifically to follow the overlay network instructions in the readme.

[Jascen]

@charandas , I was able to successfully get Swarm working with v3. I don't think you should have any problems, however, it is worth noting that I'm using a Fork I made changes to (to support explicit targeting of Services in Swarm/Compose).

[markvr]

@charandas

I'm not really clear what you mean about the compose versions. We use it with docker swarm and overlay networks. I've never used "links" but I think they were deprecated when the overlay network driver was released, so I'd advise against using them.

The instructions for swarm in the readme file worked OK for us.

[charandas]

@Jascen thanks. I will take a look at your fork. Did you add explicit targeting just so that the code/configuration becomes easier to read, or did it actually add functionality?

@markvr excuse my ignorance but I am really new to Swarm, and so far all use cases I have seen of Swarm deployments are using a bundle dab, or a --compose-file file.yml examples.

For some reason, this haproxy container is yet to shine for me in my swarm environment (which is powered by rancher).

[markvr]

Just follow the instructions in the readme file, you don't need to use compose files, dab files or links:
https://github.com/docker/dockercloud-haproxy#running-with-docker-swarmmode-swarm-mode