Jenkins Installed on Docker Swarm Engine Cluster - How to Handle Slaves?

[Justin Seiser]

We just spun up a dedicated Docker Swarm environment.  I cant seem to find a clear answer on the best/preferred way to handle slaves in this style environment.

docker-workflow - We use this in AWS, but with the EC2 Plugin, which spins up a AMI that has docker installed/configured. Thats not an option here.  It only appears to semi support the Legacy Standalone swarm, not the actual Swarm Mode.

docker-plugin - States it doesnt support Swarm mode, just legacy Swarm Standalone

docker-swarm - This appears to be what I want, but there is 0 documentation i can find on how to use it in pipelines.  It also isnt clear if this can run any docker container, or if it requires we build containers off of a JNLP enabled container.

There are countless others listed as well.  Some wanting agents installed on the docker servers themselves, which is a no go in this environment.

Im really just looking for how other people are handling this, and if it is the docker-swarm plugin, any link to any documentation on the pipeline syntax.

Thanks,

[Liejun Tao]

As far as I tried last year, there was no support to use a docker swarm cluster to serve as slaves.

The reason is once you start many slaves there is no way to tear down a specific slave (after it's done with its build) in the new swarm mode, per my understanding.

I switched to use kubernetes cluster, and it worked well.

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