Terraform dynamic inventory 0.12.12 (#5298)

* Update parsing of terraform state file for 0.12.12

* Resource does not seem to have a module element but instead has
provider
* Return the boolean right way if it is already a bool since a bool does
not have an lower method

* Remove the setting of ansible_ssh_user to root for all Packet

Not all servers in packet are accessed as root by default. CoreOS
systems use the `core` user. Removing this allows the user to specify
the remote user with an extra_var or in an ansible.cfg file.

* Default to root user for packet devices except on CoreOS

* Update TF_VERSION for packet in tf-validate-packet

Update TV_VERSION to 0.12.12 for gitlab-ci tf-validate-packet tests

* convert packet terraform files to TV_VERSION 4

* initalize terraform before copying the variable file to the top level dir

.gitlab-ci/terraform.yml

@@ -10,9 +10,9 @@
     - cp ansible.cfg ~/.ansible.cfg
     # Prepare inventory
     - if [ "$PROVIDER" == "openstack" ]; then VARIABLEFILE="cluster.tfvars"; else VARIABLEFILE="cluster.tf"; fi
-    - cp contrib/terraform/$PROVIDER/sample-inventory/$VARIABLEFILE .
     - ln -s contrib/terraform/$PROVIDER/hosts
     - terraform init contrib/terraform/$PROVIDER
+    - cp contrib/terraform/$PROVIDER/sample-inventory/$VARIABLEFILE .
     # Copy SSH keypair
     - mkdir -p ~/.ssh
     - echo "$PACKET_PRIVATE_KEY" | base64 -d > ~/.ssh/id_rsa
@@ -55,7 +55,7 @@ tf-validate-openstack:
 tf-validate-packet:
   extends: .terraform_validate
   variables:
-    TF_VERSION: 0.11.11
+    TF_VERSION: 0.12.12
     PROVIDER: packet
     CLUSTER: $CI_COMMIT_REF_NAME
 

contrib/terraform/packet/kubespray.tf

@@ -4,59 +4,60 @@ provider "packet" {
 }
 
 resource "packet_ssh_key" "k8s" {
-  count      = "${var.public_key_path != "" ? 1 : 0}"
+  count      = var.public_key_path != "" ? 1 : 0
   name       = "kubernetes-${var.cluster_name}"
-  public_key = "${chomp(file(var.public_key_path))}"
+  public_key = chomp(file(var.public_key_path))
 }
 
 resource "packet_device" "k8s_master" {
-  depends_on = ["packet_ssh_key.k8s"]
+  depends_on = [packet_ssh_key.k8s]
 
-  count            = "${var.number_of_k8s_masters}"
+  count            = var.number_of_k8s_masters
   hostname         = "${var.cluster_name}-k8s-master-${count.index + 1}"
-  plan             = "${var.plan_k8s_masters}"
+  plan             = var.plan_k8s_masters
-  facilities       = ["${var.facility}"]
+  facilities       = [var.facility]
-  operating_system = "${var.operating_system}"
+  operating_system = var.operating_system
-  billing_cycle    = "${var.billing_cycle}"
+  billing_cycle    = var.billing_cycle
-  project_id       = "${var.packet_project_id}"
+  project_id       = var.packet_project_id
   tags             = ["cluster-${var.cluster_name}", "k8s-cluster", "kube-master", "etcd", "kube-node"]
 }
 
 resource "packet_device" "k8s_master_no_etcd" {
-  depends_on = ["packet_ssh_key.k8s"]
+  depends_on = [packet_ssh_key.k8s]
 
-  count            = "${var.number_of_k8s_masters_no_etcd}"
+  count            = var.number_of_k8s_masters_no_etcd
   hostname         = "${var.cluster_name}-k8s-master-${count.index + 1}"
-  plan             = "${var.plan_k8s_masters_no_etcd}"
+  plan             = var.plan_k8s_masters_no_etcd
-  facilities       = ["${var.facility}"]
+  facilities       = [var.facility]
-  operating_system = "${var.operating_system}"
+  operating_system = var.operating_system
-  billing_cycle    = "${var.billing_cycle}"
+  billing_cycle    = var.billing_cycle
-  project_id       = "${var.packet_project_id}"
+  project_id       = var.packet_project_id
   tags             = ["cluster-${var.cluster_name}", "k8s-cluster", "kube-master"]
 }
 
 resource "packet_device" "k8s_etcd" {
-  depends_on = ["packet_ssh_key.k8s"]
+  depends_on = [packet_ssh_key.k8s]
 
-  count            = "${var.number_of_etcd}"
+  count            = var.number_of_etcd
   hostname         = "${var.cluster_name}-etcd-${count.index + 1}"
-  plan             = "${var.plan_etcd}"
+  plan             = var.plan_etcd
-  facilities       = ["${var.facility}"]
+  facilities       = [var.facility]
-  operating_system = "${var.operating_system}"
+  operating_system = var.operating_system
-  billing_cycle    = "${var.billing_cycle}"
+  billing_cycle    = var.billing_cycle
-  project_id       = "${var.packet_project_id}"
+  project_id       = var.packet_project_id
   tags             = ["cluster-${var.cluster_name}", "etcd"]
 }
 
 resource "packet_device" "k8s_node" {
-  depends_on = ["packet_ssh_key.k8s"]
+  depends_on = [packet_ssh_key.k8s]
 
-  count            = "${var.number_of_k8s_nodes}"
+  count            = var.number_of_k8s_nodes
   hostname         = "${var.cluster_name}-k8s-node-${count.index + 1}"
-  plan             = "${var.plan_k8s_nodes}"
+  plan             = var.plan_k8s_nodes
-  facilities       = ["${var.facility}"]
+  facilities       = [var.facility]
-  operating_system = "${var.operating_system}"
+  operating_system = var.operating_system
-  billing_cycle    = "${var.billing_cycle}"
+  billing_cycle    = var.billing_cycle
-  project_id       = "${var.packet_project_id}"
+  project_id       = var.packet_project_id
   tags             = ["cluster-${var.cluster_name}", "k8s-cluster", "kube-node"]
 }
+

contrib/terraform/packet/output.tf

@@ -1,15 +1,16 @@
 output "k8s_masters" {
-  value = "${packet_device.k8s_master.*.access_public_ipv4}"
+  value = packet_device.k8s_master.*.access_public_ipv4
 }
 
 output "k8s_masters_no_etc" {
-  value = "${packet_device.k8s_master_no_etcd.*.access_public_ipv4}"
+  value = packet_device.k8s_master_no_etcd.*.access_public_ipv4
 }
 
 output "k8s_etcds" {
-  value = "${packet_device.k8s_etcd.*.access_public_ipv4}"
+  value = packet_device.k8s_etcd.*.access_public_ipv4
 }
 
 output "k8s_nodes" {
-  value = "${packet_device.k8s_node.*.access_public_ipv4}"
+  value = packet_device.k8s_node.*.access_public_ipv4
 }
+

contrib/terraform/packet/variables.tf

@@ -54,3 +54,4 @@ variable "number_of_etcd" {
 variable "number_of_k8s_nodes" {
   default = 0
 }
+

contrib/terraform/packet/versions.tf

@@ -0,0 +1,4 @@
+
+terraform {
+  required_version = ">= 0.12"
+}

contrib/terraform/terraform.py

@@ -73,7 +73,7 @@ def iterresources(filenames):
                 # In version 4 the structure changes so we need to iterate
                 # each instance inside the resource branch.
                 for resource in state['resources']:
-                    name = resource['module'].split('.')[-1]
+                    name = resource['provider'].split('.')[-1]
                     for instance in resource['instances']:
                         key = "{}.{}".format(resource['type'], resource['name'])
                         if 'index_key' in instance:
@@ -182,6 +182,9 @@ def parse_list(source, prefix, sep='.'):
 
 
 def parse_bool(string_form):
+    if type(string_form) is bool:
+        return string_form
+
     token = string_form.lower()[0]
 
     if token == 't':
@@ -210,7 +213,7 @@ def packet_device(resource, tfvars=None):
         'state': raw_attrs['state'],
         # ansible
         'ansible_ssh_host': raw_attrs['network.0.address'],
-        'ansible_ssh_user': 'root',  # it's always "root" on Packet
+        'ansible_ssh_user': 'root',  # Use root by default in packet
         # generic
         'ipv4_address': raw_attrs['network.0.address'],
         'public_ipv4': raw_attrs['network.0.address'],
@@ -220,6 +223,10 @@ def packet_device(resource, tfvars=None):
         'provider': 'packet',
     }
 
+    if raw_attrs['operating_system'] == 'coreos_stable':
+        # For CoreOS set the ssh_user to core
+        attrs.update({'ansible_ssh_user': 'core'})
+
     # add groups based on attrs
     groups.append('packet_operating_system=' + attrs['operating_system'])
     groups.append('packet_locked=%s' % attrs['locked'])