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Creating Worker Nodes

Creating Worker Nodes

Learn to create worker nodes and view them using Terraform.

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Defining worker nodes

We can manage worker node pools (beyond the default one) through the azurerm_kubernetes_cluster_node_pool module. We’ve prepared yet another definition that we can use.

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resource "azurerm_kubernetes_cluster_node_pool" "secondary" {
  name                  = "${var.cluster_name}2"
  kubernetes_cluster_id = azurerm_kubernetes_cluster.primary.id
  vm_size               = var.machine_type
  enable_auto_scaling   = true
  max_count             = var.max_node_count
  min_count             = var.min_node_count
}

Explaining the output

  • Line 2: We define the name of the node pool.
  • Line 3: We define the ID of the Kubernetes cluster (kubernetes_cluster_id). Instead of hard-coding it or setting to a value, we’re telling Terraform to use the ID field of the azurerm_kubernetes_cluster.primary resource.
  • Lines 4–7: Further on, we have the size of the VMs (vm_size), whether auto-scaling should be enabled (enable_auto_scaling), and the maximum (
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