hostname: add role

playbooks/hostname.yml

@@ -0,0 +1,8 @@
+#!/usr/bin/env ansible-playbook
+---
+- hosts:
+    - pve_network
+    - vm_network
+  roles:
+    - hostname
+...

roles/hostname/defaults/main.yml

@@ -0,0 +1,24 @@
+---
+hostname__fqdn: "{{ inventory_hostname }}"
+hostname__hosts:
+  - name:
+      - localhost
+      - "{{ hostname__fqdn }}"
+      - "{{ hostname__fqdn.split('.') | first }}"
+    address:
+      - 127.0.0.1
+      - ::1
+  - name:
+      - ip6-localhost
+      - ip6-loopback
+    address:
+      - ::1
+  - name:
+      - ip6-allnodes
+    address:
+      - ff02::1
+  - name:
+      - ip6-allrouters
+    address:
+      - ff02::2
+...

roles/hostname/tasks/main.yml

@@ -0,0 +1,14 @@
+---
+- name: Set hostname
+  hostname:
+    name: "{{ hostname__fqdn }}"
+    use: systemd
+
+- name: Configure /etc/hosts
+  template:
+    src: hosts.j2
+    dest: /etc/hosts
+    owner: root
+    group: root
+    mode: u=rw,g=r,o=r
+...

roles/hostname/templates/hosts.j2

@@ -0,0 +1,7 @@
+{{ ansible_managed | comment }}
+
+{% for item in hostname__hosts %}
+{% for addr in item.address %}
+{{ addr }} {{ item.name | join(" ") }}
+{% endfor %}
+{% endfor %}