provider "azurerm" {
  version = "=1.24.0"

  subscription_id = "${var.subscription_id}"
  client_id       = "${var.client_id}"
  client_secret   = "${var.client_secret}"
  tenant_id       = "${var.tenant_id}"
}

resource "azurerm_resource_group" "k8s" {
  name     = "${var.resource_group}"
  location = "${var.resource_group_location}"
}

resource "tls_private_key" "key" {
  algorithm   = "RSA"
  ecdsa_curve = "P224"
  rsa_bits    = "4096"
}

resource "azurerm_kubernetes_cluster" "k8s" {
  name                = "${var.cluster_name}"
  resource_group_name = "${azurerm_resource_group.k8s.name}"
  location            = "${azurerm_resource_group.k8s.location}"
  dns_prefix          = "${var.cluster_name}-k8s"

  agent_pool_profile {
    name            = "default"
    count           = 3
    vm_size         = "Standard_B2ms"
    os_type         = "Linux"
    os_disk_size_gb = 30
  }

  service_principal {
    client_id     = "${var.client_id}"
    client_secret = "${var.client_secret}"
  }

  linux_profile {
    admin_username = "${var.linux_profile_admin_user}"

    ssh_key {
      key_data = "${trimspace(tls_private_key.key.public_key_openssh)}"
    }
  }

  tags {
    Environment = "Demo"
  }
}