Add support for linux_node_config cgroupMode

[hanikesn]

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Description

Newer GKE release allow setting the cgroupMode for nodes,:
https://cloud.google.com/kubernetes-engine/docs/how-to/node-system-config#cgroup-mode-options

New or Affected Resource(s)

• google_container_node_pool

Potential Terraform Configuration

resource "google_container_node_pool" "secondary-pools" {
  node_config {
    linux_node_config {
      cgroup_mode = "CGROUP_MODE_UNSPECIFIED"
    }
  }
}

References

b/288868203

[peter-mueller-viacom]

Please also add same to resource google_container_aws_node_pool TY.

[MatthieuStrullu]

Waiting Terraform configuration availability, is there any workaround to change cgroup mode ?

[DanTulovsky]

You can do this manually after the cluster is created, per node pool:

# put this into a file: config.txt
linuxConfig:
  cgroupMode: 'CGROUP_MODE_V1'

Then run:

gcloud container node-pools update <node_pool_name> --cluster=<cluster_name> --location <cluster_location> --system-config-from-file=./config.txt;

This does a normal node pool rolling update, recreating all the nodes.

[davicedraz]

Complementing @DanTulovsky's suggestion, you can perform this update via terraform using a null_resource by running a script that performs the gcloud container node-pools update on the desired node pools.

For example:

resource "null_resource" "update_cgroup" {
  triggers = {
    // whatever makes the most sense in your context
  }

  provisioner "local-exec" {
    command = "sh ../scripts/update-cgroup-mode.sh ${module.node_pool} ${module.cluster.name} ${var.metadata.region}"
  }

  depends_on = [module.node_pool] // your module of node pools, so it will only run after creating it
}

[NA2047]

Suggest closing this as this was merged in GoogleCloudPlatform/magic-modules#8997

[melinath]

Fixed in GoogleCloudPlatform/magic-modules#8997

[github-actions]

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