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k8s: Terraform deployment for GKE clusters #33

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k8s: Terraform deployment for GKE clusters #33

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Commits on Nov 28, 2022

  1. k8s: Terraform deployment for GKE clusters 

    This provides a Terraform configuration for deploying our Kubernetes
clusters to GKE. We deploy an identical cluster to each of a list of
regions, with one small node for admin purposes due to a requirement to
not use spot instances for the main node group for the and two
autoscaling groups one with small 8 core nodes for most jobs and one
with bigger nodes for the more resource intensive ones.

This is different to our current scheme where each cluster has a single
node group and we direct jobs in Jenkins. With this scheme we allow the
Kubernetes scheduler to place jobs, or we can still direct them to
specific node sizes using nodeSelector in the jobs and the labels that
are assigned to the nodegroups. This is a more Kubernetes way of doing
things and decouples further from Jenkins.

Signed-off-by: Mark Brown <[email protected]>
    @broonie
    broonie committed Nov 28, 2022
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