Initial Commit

roles/hostname/defaults/main.yaml

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+---
+hostname_reboot: true

roles/hostname/tasks/main.yml

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+---
+- name: update hosts file
+  ansible.builtin.template:
+    src: hosts.j2
+    dest: /etc/hosts
+    owner: root
+    group: root
+    mode: 0644
+    backup: yes
+  register: _hostname
+
+- name: update hostname
+  ansible.builtin.template:
+    src: hostname.j2
+    dest: /etc/hostname
+    owner: root
+    group: root
+    mode: 0644
+    backup: yes
+  register: _hostname

roles/hostname/templates/hostname.j2

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+{{ inventory_hostname }}

roles/hostname/templates/hosts.j2

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+127.0.0.1   localhost.localdomain localhost localhost4
+::1         localhost.localdomain localhost localhost6