Ansible DNS optimizations

dns-entry.yml

@@ -1,6 +1,20 @@
 ---
 # file: dns-entry.yml
 
+# This playbook is used to create a DNS entry for a given server if it's IP address is a host variable.
+# It will create a Terraform file in the homelab/terraform/dns directory.
+# It will then run the Terraform apply command to create the DNS entry.
+# It will then notify the update-dns handler to update the DNS entry.
+
+# Future work:
+# - Add a check to see if the DNS entry already exists.
+# - Add a check to see if the Terraform provider is already configured.
+# - Add a check to see if the Terraform DNS entry is already created.
+
+- name: Validate Terraform DNS provider
+  delegate_to: "{{ terraform_server }}"
+  run_once: true
+  block:
     - name: Check if terraform directory exists
       ansible.builtin.stat:
         path: homelab/terraform/dns
@@ -19,36 +33,12 @@
         dest: homelab/terraform/dns/provider.tf
         mode: '0644'
 
-- name: Loop through all hosts
-  vars:
-    my_hosts: "{{ query('inventory_hostnames', 'all') }}"
-  # ansible.builtin.debug:
-  #   msg: "Host {{ item }} has IP address: {{ hostvars[my_hosts[my_idx]].ip_address | default('No IP address defined') }}"
+- name: Create Terraform files for DNS
+  delegate_to: "{{ terraform_server }}"
   ansible.builtin.template:
     src: templates/dns.tf.j2
-    dest: homelab/terraform/dns/{{ item }}.tf
+    dest: homelab/terraform/dns/{{ inventory_hostname }}.tf
     mode: '0644'
-  when: hostvars[my_hosts[my_idx]].ip_address is defined
-  loop: "{{ my_hosts }}"
-  loop_control:
-    index_var: my_idx
-
-# - name: Loop through all hosts
-#   block:
-#     - name: Create Terraform files for all eligible hosts
-#       when: "{{hostvars["{{ item }}"].ip_address}}" is defined
-#       ansible.builtin.template:
-#         src: templates/dns.tf.j2
-#         dest: homelab/terraform/dns/{{ item }}.tf
-#         mode: '0644'
-#   loop: "{{ query('inventory_hostnames', 'all') }}"
-
-# - name: Update DNS entries via Terraform
-#   community.general.terraform:
-#     project_path: homelab/terraform/dns/
-#     variables:
-#       freeipa_server: "{{ dns_server }}"
-#       freeipa_admin: "{{ dns_admin }}"
-#       freeipa_password: "{{ vault_freeipa_password }}"
-#     state: present
-#     force_init: true
+  changed_when: true
+  notify:
+    - Update DNS

group_vars/all/vars

@@ -5,3 +5,6 @@
 dns_server: "infra01.int.mk-labs.cloud"
 dns_admin: "admin"
 base_domain: "int.mk-labs.cloud"
+
+# Terraform variables
+terraform_server: "infra01"

site.yml

@@ -7,9 +7,22 @@
 
   tasks:
     - name: Process DNS entries
-      when: inventory_hostname == "infra01"
+      when: ip_address is defined
       ansible.builtin.import_tasks:
         file: dns-entry.yml
       tags:
         - update-dns
         - never
+
+  handlers:
+    - name: Update DNS
+      run_once: true
+      delegate_to: "{{ terraform_server }}"
+      community.general.terraform:
+        project_path: homelab/terraform/dns/
+        variables:
+          freeipa_server: "{{ dns_server }}"
+          freeipa_admin: "{{ dns_admin }}"
+          freeipa_password: "{{ vault_freeipa_password }}"
+        state: present
+        force_init: true

templates/dns.tf.j2

@@ -5,7 +5,7 @@ resource "freeipa_dns_record" "{{ inventory_hostname }}" {
   name = "{{ inventory_hostname }}"
   type = "A"
   records = [
-    "{{ hostvars[inventory_hostname].ip_address }}",
+    "{{ ip_address }}",
   ]
   ttl = 60
 }