docker swarm service update

[edouardkleinhans]

Is it possible to trigger an update to a docker swarm service ?

[stffabi]

At the moment watchtower can only update local running containers. I've briefly taken a look into the api, I think it should be possible to enhance watchtower with this functionality.

[ragemac]

That would be of great help for us as well. I hope we see this functionality soon. Thank you for your hard work

[dcrystalj]

this feature is must for future. Im looking forward to see this one day

[pjutard]

🙏

[oguya]

👍

[oguya]

Would deploying watchtower service to all manager & worker nodes in a swarm cluster achieve the same functionality as is in non-swarmed nodes??

[djmaze]

@oguya No, it does not work, because swarm manages the running containers itself.

As it turns out, automatically updating containers in a swarm-mode cluster is a lot simpler, since swarm itself queries the registry and updates the running containers every time you call swarm update --image. That means you just need to trigger a service update.

That is what I have just done with shepherd.

[danieljuhl]

@djmaze looks interesting.. I assume shepherd needs to be constrained to the manager ?

[djmaze]

@danieljuhl You are right, of course. Also there needs to be exactly one replica running.

I updated the README accordingly. Thanks!

[lnshi]

+1

[Dunky13]

Is there any update on this issue?

Seems like Shepherd does the job: https://github.com/djmaze/shepherd But I'd rather have one program updating my containers

[dhruvit01]

+1 https://github.com/djmaze/shepherd seem to be working fine. Just a concern that I see that logs talks about updating service all the time, regardless if the base image is changed or not...

[Dunky13]

@dhruvit01 exactly, That's an issue I'm experiencing with shepherd... And would like watchtower to pick up where they slack off.

[dhruvit01]

@Dunky13 : Agree. At this point I am using both but would like to have watch tower to support swarm. Any news/timeline on if/when this should be coming in?

[simskij]

With that said; what are the actual functional requirements? Would someone even like to have a stab at implementing it? If so, feel free to - I'll make sure to review the PR. Thanks 🙏

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[Dunky13]

Don't think this should be closed or stale imho. It's an issue that can/should be addressed in the future. Closing it will put in too much in the background.

[sixcorners]

If I use local containers and swarm containers will this try to update the swarm containers?
Does this at least support swarm insofar as it will skip them?

[simskij]

@sixcorners I don't know to be totally honest as I don't use swarms myself. Feel free to try and report back! 😅

[simskij]

Closing this issue. As @stffabi stated previously, the swarm support is currently extremely limited (if any). If you have any more specific errors, or would like to have a stab at implementing more thoroughly covering swarm support, please open a new issue and/or PR respectively.

Thank you.

[ghost]

To avoid important communication to get lost in a closed issues no one monitors, I'll go ahead and lock this issue. If you want to continue the discussion, please open a new issue. Thank you! 🙏🏼