terraform configuration for Kubernetes clusters

terraform configuration for Kubernetes clusters

[Mark Brown]

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Hi,

There's a couple of pull requests open which attempt to start converting
the Kubernetes clusters we're using for build to be managed using
Terraform:

Azure: https://github.com/kernelci/kernelci-deploy/pull/18
GKE: https://github.com/kernelci/kernelci-deploy/pull/33

The idea here is to make it easier to manage things, both for people
doing deployment (since it makes things less manual) and for those
working with developing things (since they can see how production is
configured and propose changes without actually accessing it).  Since I
don't have any access to production I'm about at the limit of what I can
do with this right now, there's some finishing on the configurations
that should be done but that needs some configuration on the cloud side
(eg, for allocating a storage bucket for terraform to store state in)
and validation that what I've done does actually match what the current
system does.

Discussing this at the weekly meetings it's seemed like people were
broadly in favour of this approach but we need a plan for how we'd
actually deploy it - do people have any thoughts on this?  One
suggestion was that we should start deploying this in parallel with the
existing infrastructure and putting jobs through it, perhaps doing
something like putting the new pipeline jobs through it it.

There was also some talk of also deploying some of the other cloudish
bits (eg, a cloud mongo instance) like this, that does seem like a good
idea if we're going with this approach.

Thanks,
Mark

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