Start improving systemd

README.md

@@ -136,7 +136,8 @@ Available variables:
 | `keep_within`      |              no               | If set, only keeps snapshots in this time period.                                                                                                                            |
 | `keep_tag`         |              no               | If set, keep snapshots with this tags. Make sure to specify a list.                                                                                                          |
 | `prune`            |         no (`false`)          | If `true`, the `restic forget` command in the script has the [`--prune` option](https://restic.readthedocs.io/en/stable/060_forget.html#removing-backup-snapshots) appended. |
-| `scheduled`        |         no (`false`)          | If `restic_create_cron` is set to `true`, this backup is scheduled.                                                                                                          |
+| `scheduled`        |         no (`false`)          | If `restic_create_cron` is set to `true`, this backup is scheduled and tries to create a systemd timer unit. If it fails, it is creating a cronjob.                          |
+| `schedule_oncalendar` |  ``'*-*-* 02:00:00'``      | The time for the systemd timer. Please notice the randomDelaySec option. By Default the backup is done every night at 2 am (+0-4h). But only if scheduled is true.  |
 | `schedule_minute`  |           no (`*`)            | Minute when the job is run. ( 0-59, *, */2, etc )                                                                                                                            |
 | `schedule_hour`    |           no (`*`)            | Hour when the job is run. ( 0-23, *, */2, etc )                                                                                                                              |
 | `schedule_weekday` |           no (`*`)            | Weekday when the job is run.  ( 0-6 for Sunday-Saturday, *, etc )                                                                                                            |
@@ -151,7 +152,7 @@ restic_backups:
     repo: remove
     src: /path/to/data
     scheduled: true
-    schedule_hour: 3
+    schedule_oncalendar: '*-*-* 01:00:00'
 ```
 
 > You can also specify restic_backups as an array, which is a legacy feature and

defaults/main.yml

@@ -13,5 +13,9 @@ restic_create_cron: false
 restic_dir_owner: '{{ ansible_user | default(ansible_user_id) }}'
 restic_dir_group: '{{ ansible_user | default(ansible_user_id) }}'
 
+# timer defaults
+restic_systemd_timer_randomizeddelaysec: '4h'
+restic_systemd_timer_default_OnCalendar: '*-*-* 02:00:00'
+
 # perform simple version check for this role? (true is recomended)
 submodules_versioncheck: false

tasks/configure.yml

@@ -23,4 +23,4 @@
   loop: "{{ restic_repos|dict2items }}"
   when:
     - item.value.init is defined
-    - item.value.init
+    - item.value.init|bool

tasks/timer.yml

@@ -1,21 +1,4 @@
 ---
-- name: cleanup old CRON jobs from migration
-  ansible.builtin.cron:
-    name: 'arillso.restic backup {{ item.name }}'
-    job: 'CRON=true {{ restic_script_dir }}/backup-{{ item.name }}.sh'
-    minute: '{{ item.schedule_minute | default("*") }}'
-    hour: '{{ item.schedule_hour | default("*") }}'
-    weekday: '{{ item.schedule_weekday | default("*") }}'
-    month: '{{ item.schedule_month | default("*") }}'
-    state: absent
-  become: true
-  no_log: true
-  with_items: '{{ restic_backups }}'
-  when:
-    - restic_create_cron
-    - item.name is defined
-    - item.scheduled | default(false)
-
 - name: create systemd timer
   block:
     - name: copy systemd timer

templates/restic.timer.j2

@@ -2,8 +2,8 @@
 Description=Run restic backup {{ item.name }} every night
 
 [Timer]
-OnCalendar=*-*-* 02:00:00
+OnCalendar=*-*-* 02:00:00 {{ restic_systemd_timer_default_OnCalendar }}
-RandomizedDelaySec=3h
+RandomizedDelaySec={{ restic_systemd_timer_randomizeddelaysec }}
 Persistent=yes
 
 [Install]