[Jenkins-infra] A random thought for reducing ci.j.io cost

Baptiste Mathus bmathus at cloudbees.com
Mon Feb 17 08:51:25 UTC 2020

See inline

On Sat, Feb 8, 2020 at 1:10 AM R. Tyler Croy <rtyler at brokenco.de> wrote:

> (replies inline)


> I agree, the same-ness of our hosts in Azure right now is especially
> useful.
> Other than using Puppet, like we have with fixed agents in the past, I
> don't
> have a great solution in mind for how the sameness could be acheived by
> fixed
> and cloud-based agents simultaneously.

In my past, in a fixed environment where getting VMs was a manual process,
we achieved this by using Docker Swarm (v1) to balance the load
transparently to all VMs + agents running in Docker.
This was working great for ~60 hours of builds per day (so, might not work
for the likely hundreds of hours per day on ci.jenkins.io).

Nowadays, given Docker Swarm is deprecated, my guess is that it would be
K8S? (though I'd hope we do not need to adapt Jenkinsfile and the way we
build... ?)

-- Baptiste
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