Add support for maintenance windows on google_container_cluster

[pdecat]

Hi there,

Google Cloud Container Engine maintenance windows were introduced last week:

https://cloud.google.com/container-engine/release-notes#new-features_1
https://cloud.google.com/container-engine/docs/maintenance-window

As of now, the relevant API is just made of MaintenancePolicy with a nested DailyMaintenanceWindow (probably making room future alternative policies):

https://github.com/google/google-api-go-client/blob/cf8a9e7cedca7843a0fdd8adc9d019e84349768d/container/v1/container-gen.go#L1255

Not yet documented at https://cloud.google.com/container-engine/reference/rest/v1beta1/projects.locations.clusters

Affected Resource

• google_container_cluster

Terraform Configuration Files

I'd suggest the following design:

resource "google_container_cluster" "primary" {
  name               = "marcellus-wallace"
  zone               = "us-central1-a"
  initial_node_count = 3

  maintenance_policy {
    daily_maintenance_window {
       start_time = "3:00"
    }
  }

  master_auth {
    username = "mr.yoda"
    password = "adoy.rm"
  }

  node_config {
    oauth_scopes = [
      "https://www.googleapis.com/auth/compute",
    ]
}

[pdecat]

Thanks @michaelbannister & @danawillow!

[ghost]

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