support enable/disable timed backups

playbook.yml

@@ -8,6 +8,7 @@
       - (cd "/tmp" && forgejo.sh dump --file="forgejo.zip")
     restic_backup_targets:
       - /tmp/forgejo.zip
+    restic_backup_frequency: daily
     sendmail_mta_user: "{{ vault_mta_user }}" 
     sendmail_mta_user_pw: "{{ vault_mta_user_pw }}"
     sendmail_mailhub: "box.nilsnh.no:465"
@@ -31,20 +32,3 @@
     - forgejo
     - caddy
 
-# - hosts: this_machine
-#   handlers:
-#   vars:
-#     restic_repo_pw: "{{ vault_restic_pw_mrmittens }}"
-#     restic_repo_url: "{{ vault_restic_url_mrmittens }}"
-#     sendmail_mta_user: "{{ vault_mta_user }}" 
-#     sendmail_mta_user_pw: "{{ vault_mta_user_pw }}"
-#     sendmail_mailhub: "box.nilsnh.no:465"
-#     sendmail_hostname: mr-mittens.box.nilsnh.no
-#     sendmail_rewrite_domain: "nilsnh.no"
-#     sendmail_revaliases:
-#       root: "{{ machine_from_email }}"
-#     machine_from_email: "noreply+mr-mittens@nilsnh.no"
-#     machine_notifications_receiver: "mail@nilsnh.no" 
-#   roles:
-#     - sendmail
-#     - backup

roles/backup/files/backup.timer

@@ -1,9 +0,0 @@
-[Unit]
-Description=Run backups daily
-
-[Timer]
-OnCalendar=daily
-Persistent=false
-
-[Install]
-WantedBy=timers.target

roles/backup/tasks/main.yml

@@ -77,14 +77,32 @@
   
 - name: upload systemd unit files
   copy:
-    src: "{{ item }}"
-    dest: "/etc/systemd/system/{{ item }}"
-  loop:
-    - backup.service
-    - backup.timer
+    src: backup.service
+    dest: /etc/systemd/system/backup.service
 
-- name: Enable backup.timer
+- name: upload backup.timer
+  ansible.builtin.template:
+    src: backup.timer.j2
+    dest: /etc/systemd/system/backup.timer
+  when: restic_backup_frequency
+
+- name: enable backup.timer
   ansible.builtin.systemd:
     name: backup.timer
     state: started
-    enabled: true
+    enabled: true
+  when: restic_backup_frequency
+
+- name: disable backup.timer, if restic_backup_frequency is set to false
+  ansible.builtin.systemd:
+    name: backup.timer
+    state: stopped
+    enabled: false
+  when: not restic_backup_frequency
+
+- name: remove backup.timer, if restic_backup_frequency is set to false
+  ansible.builtin.file:
+    path: /etc/systemd/system/backup.timer
+    state: absent
+  when: not restic_backup_frequency
+

roles/backup/templates/backup.timer.j2

@@ -0,0 +1,9 @@
+[Unit]
+Description=Run backups, on schedule: "{{ restic_backup_frequency }}".
+
+[Timer]
+OnCalendar={{ restic_backup_frequency }}
+Persistent=false
+
+[Install]
+WantedBy=timers.target