feat(ntp): add role and playbook

playbooks/ntp.yml

@@ -0,0 +1,7 @@
+---
+- name: Install and configure network time protocol daemon
+  hosts: "{{ ntp_hosts | default('ntp') }}"
+  become: "{{ ntp_become | default(false) }}"
+  gather_facts: "{{ ntp_gather_facts | default(false) }}"
+  roles:
+    - role: finallycoffee.base.ntp

roles/ntp/README.md

@@ -0,0 +1,4 @@
+# `finallycoffee.base.ntp`
+
+Install `ntp`, configure a timezone by sym-linking `/etc/localtime`
+and enable the systemd service.

roles/ntp/defaults/main.yml

@@ -0,0 +1,14 @@
+---
+ntp_state: present
+ntp_package_name: "ntp"
+
+ntp_timezone: "Europe/Paris"
+
+ntp_systemd_service_name: "ntpd.service"
+ntp_systemd_service_state: >-2
+  {{ (ntp_state == 'present') | ternary('started', 'stopped') }}
+ntp_systemd_service_enabled: >-2
+  {{ (ntp_state == 'present') }}
+
+ntp_etc_localtime_file: "/etc/localtime"
+ntp_usr_share_zoneinfo_path: "/usr/share/zoneinfo"

roles/ntp/meta/main.yml

@@ -0,0 +1,8 @@
+---
+allow_duplicates: true
+dependencies: []
+galaxy_info:
+  role_name: ntp
+  description: Install network time protocol daemon
+  galaxy_tags:
+    - ntp

roles/ntp/tasks/main.yml

@@ -0,0 +1,28 @@
+---
+- name: Check if 'ntp_state' is valid
+  ansible.builtin.fail:
+    msg: >-2
+      Invalid state '{{ ntp_state }}'! Valid
+      states are {{ ntp_states | join(', ') }}.
+  when: ntp_state not in ntp_states
+
+- name: Ensure system package is {{ ntp_state }}
+  ansible.builtin.package:
+    name: "{{ ntp_package_name }}"
+    state: "{{ ntp_state }}"
+
+- name: Ensure /etc/localtime is symlinked
+  ansible.builtin.file:
+    src: "{{ ntp_usr_share_zoneinfo_path }}/{{ ntp_timezone }}"
+    dest: "{{ ntp_etc_localtime_file }}"
+    state: "{{ (ntp_state == 'present') | ternary('link', 'absent') }}"
+
+- name: Ensure ntp systemd service is configured
+  ansible.builtin.systemd:
+    name: "{{ ntp_systemd_service_name }}"
+    enabled: "{{ ntp_systemd_service_enabled }}"
+
+- name: Ensure ntp systemd service is {{ ntp_systemd_service_state }}
+  ansible.builtin.systemd:
+    name: "{{ ntp_systemd_service_name }}"
+    state: "{{ ntp_systemd_service_state }}"

roles/ntp/vars/main.yml

@@ -0,0 +1,4 @@
+---
+ntp_states:
+  - "present"
+  - "absent"