dns_resolver role, update-dns script, dns-deploy playbook, inventory updates

roles/dns_resolver/tasks/main.yml

@@ -0,0 +1,24 @@
+---
+- name: Set DNS resolver (resolvconf)
+  copy:
+    content: |
+      nameserver 10.5.85.5
+      nameserver 1.1.1.1
+    dest: /etc/resolvconf/resolv.conf.d/head
+    mode: '0644'
+  when: ansible_facts.packages is defined and 'resolvconf' in ansible_facts.packages
+  notify: update resolvconf
+
+- name: Set DNS resolver (direct)
+  copy:
+    content: |
+      nameserver 10.5.85.5
+      nameserver 1.1.1.1
+    dest: /etc/resolv.conf
+    mode: '0644'
+  when: ansible_facts.packages is not defined or 'resolvconf' not in ansible_facts.packages
+
+- name: Gather package facts
+  package_facts:
+    manager: auto
+  when: ansible_facts.packages is not defined