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Creating Worker Nodes

Explore how to create and manage worker nodes in Google Kubernetes Engine clusters using Terraform. Understand node pool definitions, autoscaling settings, and version control. Gain practical knowledge of infrastructure as code in Terraform and ensure your Kubernetes cluster setup is efficient and maintainable.

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Defining worker nodes

We can manage worker nodes through the google_container_node_pool module. We’ve prepared yet another definition that we can use.

Explaining the output

Shell
resource "google_container_node_pool" "primary_nodes" {
  name         = var.cluster_name
  location     = var.region
  cluster      = google_container_cluster.primary.name
  version      = var.k8s_version
  node_config {
    preemptible  = var.preemptible
    machine_type = var.machine_type
    oauth_scopes = [
      "https://www.googleapis.com/auth/cloud-platform"
    ]
  }
  autoscaling {
    min_node_count = var.min_node_count
    max_node_count = var.max_node_count
  }
  management {
    auto_upgrade = false
  }
  timeouts {
    create = "15m"
    update = "1h"
  }
}

That definition is a bit bigger than the ones we’ve used before. There are more things we might want to define for worker nodes, so that definition has a few more fields than others.

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