Support for linuxOSConfig on azurerm_kubernetes_cluster_node_pool

[liammoat]

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Description

In API version 2020-11-01 of the Azure Rest API linuxOSConfig can be used to configured sysctl properties on an AKS agent pool (see here).

To help maintain feature parity, it would make sense to introduce this API in the Terraform provider. The API is available in ARM (see here).

New or Affected Resource(s)

• azurerm_kubernetes_cluster_node_pool

Potential Terraform Configuration

resource "azurerm_kubernetes_cluster_node_pool" "example" {
  name                  = "internal"
  kubernetes_cluster_id = azurerm_kubernetes_cluster.example.id
  vm_size               = "Standard_DS2_v2"
  node_count            = 1

  linux_os_config {
    sysctls {
      netIpv4TcpWmem = 12345
      netIpv4TcpTwReuse = true
      netIpv4IpLocalPortRange = "20000 60000"
      kernelThreadsMax = 99999
    }
  }
}

References

• https://docs.microsoft.com/en-us/azure/aks/custom-node-configuration
• https://docs.microsoft.com/en-us/azure/templates/microsoft.containerservice/managedclusters/agentpools

[liammoat]

cc: @grayzu

[katbyte]

closing as it looks like this has been fixed by #11119

[github-actions]

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