add backup service

roles/borg/files/backup.timer

@@ -0,0 +1,10 @@
+[Unit]
+Description=Backup data daily
+
+[Timer]
+OnCalendar=*-*-* 3:00:00
+Persistent=true
+RandomizedDelaySec=1h
+
+[Install]
+WantedBy=timers.target

roles/borg/tasks/main.yml

@@ -1,3 +1,28 @@
+- name: Install borg
+  apt:
+    pkg:
+      - borgbackup
+      - borgmatic
+- name: Copy borg backup config
+  template:
+    src: "{{ role_path }}/templates/backup.yml.j2"
+    dest: /root/backup.yml
+- name: Copy systemd service
+  template:
+    src: "{{ role_path }}/templates/backup.service.j2"
+    dest: "/etc/systemd/system/backup.service"
+  register: service
+- name: Copy systemd timer
+  copy:
+    src: "{{ role_path }}/files/backup.timer"
+    dest: "/etc/systemd/system/backup.timer"
+  register: timer
+- name: Enable timer
+  systemd:
+    name: backup.timer
+    enabled: true
+    state: started
+    daemon_reload: "{{ 'yes' if service.changed or timer.changed else 'no' }}"
 - name: Create extra disk moint point
   file:
     path: "{{ kingston1tb_mount_point }}"

roles/borg/templates/backup.service.j2

@@ -0,0 +1,6 @@
+[Unit]
+Description=Backup data using borgmatic
+
+[Service]
+ExecStart=/usr/bin/borgmatic --config /root/backup.yml
+Type=oneshot

roles/borg/templates/backup.yml.j2

@@ -0,0 +1,14 @@
+location:
+    source_directories:
+        - /mnt/atlas
+    repositories:
+        - {{ backup_location }}
+retention:
+    keep_daily: 7
+    keep_weekly: 4
+    keep_monthly: 6
+hooks:
+    before_everything:
+        - echo down | ssh backup-control@atlas.lan
+    after_everything:
+        - echo up | ssh backup-control@atlas.lan