From 4ad25f705716b8216f026a16415bb1e315efdeeb Mon Sep 17 00:00:00 2001
From: Jeltz <jeltz@auro.re>
Date: Wed, 5 Apr 2023 00:18:41 +0200
Subject: [PATCH] hostname: add role

---
 playbooks/hostname.yml            |  8 ++++++++
 roles/hostname/defaults/main.yml  | 24 ++++++++++++++++++++++++
 roles/hostname/tasks/main.yml     | 14 ++++++++++++++
 roles/hostname/templates/hosts.j2 |  7 +++++++
 4 files changed, 53 insertions(+)
 create mode 100755 playbooks/hostname.yml
 create mode 100644 roles/hostname/defaults/main.yml
 create mode 100644 roles/hostname/tasks/main.yml
 create mode 100644 roles/hostname/templates/hosts.j2

diff --git a/playbooks/hostname.yml b/playbooks/hostname.yml
new file mode 100755
index 0000000..c31344e
--- /dev/null
+++ b/playbooks/hostname.yml
@@ -0,0 +1,8 @@
+#!/usr/bin/env ansible-playbook
+---
+- hosts:
+    - pve_network
+    - vm_network
+  roles:
+    - hostname
+...
diff --git a/roles/hostname/defaults/main.yml b/roles/hostname/defaults/main.yml
new file mode 100644
index 0000000..47ea332
--- /dev/null
+++ b/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
+...
diff --git a/roles/hostname/tasks/main.yml b/roles/hostname/tasks/main.yml
new file mode 100644
index 0000000..c469f5f
--- /dev/null
+++ b/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
+...
diff --git a/roles/hostname/templates/hosts.j2 b/roles/hostname/templates/hosts.j2
new file mode 100644
index 0000000..30ab544
--- /dev/null
+++ b/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 %}