fix: hostname and domain setup

roles/os_base/defaults/main.yml

@@ -9,3 +9,8 @@ system_packages__default: []
 system_accounts: "{{ vars | dict2items | selectattr('key', 'match', '^system_accounts__.*') | map(attribute='value') |     list | flatten | unique }}"
 system_packages: "{{ vars | dict2items | selectattr('key', 'match', '^system_packages__.*') | map(attribute='value') |     list | flatten | unique }}"
 
+# system_hostname: "{{ ansible_hostname }}"
+system_hostname: "{{ inventory_hostname | split('.') | first }}"
+system_domain: "{{ (inventory_hostname | split('.'))[1:] | join('.') }}"
+# system_domain: "lan.test"
+system_fqdn: "{{ system_hostname }}.{{ system_domain }}"

roles/os_base/tasks/main.yml

@@ -8,7 +8,11 @@
     role_config:
       system_accounts: "{{ system_accounts }}"
       system_packages: "{{ system_packages }}"
+      system_hostname: "{{ system_hostname }}"
+      system_domain: "{{ system_domain }}"
+      system_fqdn: "{{ system_fqdn }}"
       tasks:
+        - "Configure system hostname, domain and fqdn"
         - Ensure system security groups are present
         - Create system users from system_accounts
         - Ensure ssh keys are correctly deployed
@@ -18,6 +22,23 @@
   tags:
     - config_show
 
+# Configure system fqdn
+# ==========================
+- name: Configure system hostname in /etc/hosts
+  ansible.builtin.lineinfile:
+    path: /etc/hosts
+    regexp: '^127\.0\.1\.1 '
+    line: '127.0.1.1 {{ system_fqdn }} {{ system_hostname }}'
+    state: present
+  register: machine_name_changed
+
+- name: "Apply system hostname (changed={{ machine_name_changed.changed }})"
+  ansible.builtin.shell:
+    cmd: "test '{{ ansible_check_mode|lower }}' == true || hostnamectl set-hostname {{ system_fqdn }}"
+  when: machine_name_changed.changed
+  changed_when: true
+  check_mode: false
+
 
 # Configure groups and users
 # ==========================