Install calico via terraform

This will be disabled by default to have the old behaviour

Signed-off-by: solidnerd <[email protected]>

Author: solidnerd

README.md

@@ -42,7 +42,7 @@ $ KUBECONFIG=secrets/admin.conf kubectl expose deploy nginx --port=80 --type Nod
 | `docker_version`         | `18.06`          | Docker CE version that will be installed                                                     | No       |
 | `kubernetes_version`         | `1.12.0`          | Kubernetes version that will be installed                                                     | No       |
 | `core_dns`         | `false`          | Enables CoreDNS as Service Discovery                                                     | No       |
-
+| `calico_enabled`         | `false`          | Installs Calico Network Provider after the master comes up                                                    | No       |
 All variables cloud be passed through `environment variables` or a `tfvars` file.
 
 An example for a `tfvars` file would be the following `terraform.tfvars`

install-calico.tf

@@ -0,0 +1,18 @@
+resource "null_resource" "calico" {
+  count = "${var.calico_enabled ? 1 : 0}"
+
+  connection {
+    host        = "${hcloud_server.master.*.ipv4_address}"
+    private_key = "${file(var.ssh_private_key)}"
+  }
+
+  provisioner "remote-exec" {
+    inline = <<EOF
+    kubectl apply -f https://docs.projectcalico.org/v3.2/getting-started/kubernetes/installation/hosted/etcd.yaml
+    kubectl apply -f https://docs.projectcalico.org/v3.2/getting-started/kubernetes/installation/rbac.yaml
+    kubectl apply -f https://docs.projectcalico.org/v3.2/getting-started/kubernetes/installation/hosted/calico.yaml
+    EOF
+  }
+
+  depends_on = ["hcloud_server.master"]
+}

variables.tf

@@ -43,5 +43,9 @@ variable "kubernetes_version" {
 }
 
 variable "core_dns" {
-  default = "false"
+  default = false
+}
+
+variable "calico_enabled" {
+  default = false
 }