Terraform count based resource management

terraform apply

$ terraform apply
random_id.cluster_name[0]: Refreshing state... [id=26Ak6SRX]
azurerm_resource_group.rg[0]: Refreshing state... [id=/subscriptions/104e4289-6059-4afb-885a-982ba31991ee/resourceGroups/K8sRG1]
data.azurerm_kubernetes_service_versions.current[0]: Reading...
data.azurerm_kubernetes_service_versions.current[0]: Read complete after 1s [id=/subscriptions/104e4289-6059-4afb-885a-982ba31991ee/providers/Microsoft.ContainerService/locations/southindia]
azurerm_kubernetes_cluster.aks[0]: Refreshing state... [id=/subscriptions/104e4289-6059-4afb-885a-982ba31991ee/resourceGroups/K8sRG1/providers/Microsoft.ContainerService/managedClusters/k8s-dba024e92457]
azurerm_public_ip.public_ip[0]: Refreshing state... [id=/subscriptions/104e4289-6059-4afb-885a-982ba31991ee/resourceGroups/MC_K8sRG1_k8s-dba024e92457_southindia/providers/Microsoft.Network/publicIPAddresses/k8s-public-ip-dba024e92457]
local_file.kubeconfigaks[0]: Refreshing state... [id=6d63d7a3898cbab172185eb9d0d1d56b753f4d3b]
azurerm_kubernetes_cluster_node_pool.aks_node_pool[0]: Refreshing state... [id=/subscriptions/104e4289-6059-4afb-885a-982ba31991ee/resourceGroups/K8sRG1/providers/Microsoft.ContainerService/managedClusters/k8s-dba024e92457/agentPools/nodepool1]
azurerm_kubernetes_cluster_node_pool.aks_node_pool[1]: Refreshing state... [id=/subscriptions/104e4289-6059-4afb-885a-982ba31991ee/resourceGroups/K8sRG1/providers/Microsoft.ContainerService/managedClusters/k8s-dba024e92457/agentPools/nodepool2]

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
  - destroy
-/+ destroy and then create replacement

Terraform will perform the following actions:

  # azurerm_kubernetes_cluster_node_pool.aks_node_pool[0] must be replaced
-/+ resource "azurerm_kubernetes_cluster_node_pool" "aks_node_pool" {
      - custom_ca_trust_enabled = false -> null
      - enable_auto_scaling     = false -> null
      - enable_host_encryption  = false -> null
      - enable_node_public_ip   = false -> null
      - fips_enabled            = false -> null
      ~ id                      = "/subscriptions/104e4289-6059-4afb-885a-982ba31991ee/resourceGroups/K8sRG1/providers/Microsoft.ContainerService/managedClusters/k8s-dba024e92457/agentPools/nodepool1" -> (known after apply)
      ~ kubelet_disk_type       = "OS" -> (known after apply)
      - max_count               = 0 -> null
      ~ max_pods                = 110 -> (known after apply)
      - min_count               = 0 -> null
      ~ name                    = "nodepool1" -> "nodepool2" # forces replacement
      ~ node_count              = 1 -> 2
      ~ node_labels             = {} -> (known after apply)
      - node_taints             = [] -> null
      ~ orchestrator_version    = "1.26.0" -> (known after apply)
      ~ os_disk_size_gb         = 128 -> (known after apply)
      ~ os_sku                  = "Ubuntu" -> (known after apply)
        tags                    = {
            "foo" = "bar"
            "key" = "val"
        }
      - zones                   = [] -> null
        # (9 unchanged attributes hidden)
    }

  # azurerm_kubernetes_cluster_node_pool.aks_node_pool[1] will be destroyed
  # (because index [1] is out of range for count)
  - resource "azurerm_kubernetes_cluster_node_pool" "aks_node_pool" {
      - custom_ca_trust_enabled = false -> null
      - enable_auto_scaling     = false -> null
      - enable_host_encryption  = false -> null
      - enable_node_public_ip   = false -> null
      - fips_enabled            = false -> null
      - id                      = "/subscriptions/104e4289-6059-4afb-885a-982ba31991ee/resourceGroups/K8sRG1/providers/Microsoft.ContainerService/managedClusters/k8s-dba024e92457/agentPools/nodepool2" -> null
      - kubelet_disk_type       = "OS" -> null
      - kubernetes_cluster_id   = "/subscriptions/104e4289-6059-4afb-885a-982ba31991ee/resourceGroups/K8sRG1/providers/Microsoft.ContainerService/managedClusters/k8s-dba024e92457" -> null
      - max_count               = 0 -> null
      - max_pods                = 110 -> null
      - min_count               = 0 -> null
      - mode                    = "User" -> null
      - name                    = "nodepool2" -> null
      - node_count              = 2 -> null
      - node_labels             = {} -> null
      - node_taints             = [] -> null
      - orchestrator_version    = "1.26.0" -> null
      - os_disk_size_gb         = 128 -> null
      - os_disk_type            = "Managed" -> null
      - os_sku                  = "Ubuntu" -> null
      - os_type                 = "Linux" -> null
      - priority                = "Regular" -> null
      - scale_down_mode         = "Delete" -> null
      - spot_max_price          = -1 -> null
      - tags                    = {
          - "foo" = "bar"
          - "key" = "val"
        } -> null
      - ultra_ssd_enabled       = false -> null
      - vm_size                 = "Standard_D2_v2" -> null
      - zones                   = [] -> null
    }

Plan: 1 to add, 0 to change, 2 to destroy.

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

  Enter a value: no

Apply cancelled.