feat(systemd): use service only for backups

And other cleanup/var improvements

defaults/main.yml

@@ -2,7 +2,8 @@
 
 restic_install: false
 restic_version: 0.9.4
-restic_script_path: /root/restic-backup.sh
+restic_path: /usr/local/bin/restic
+restic_env_file_path: /root/.restic_env
 
 restic_repository_name: restic
 restic_default_folders:
@@ -14,6 +15,7 @@ restic_databases: []
 restic_forget: true
 restic_forget_keep_within: 30d
 restic_prune: true
+restic_check: true
 
 restic_ssh_host: backup
 restic_ssh_port: 22 

handlers/main.yml

@@ -0,0 +1,5 @@
+---
+
+- name: systemd reload
+  systemd:
+    daemon_reload: yes

tasks/install.yml

@@ -1,9 +1,10 @@
 ---
-- name: Install fuse
+
+- name: Install fuse (to mount repositories)
   apt:
     name: fuse
 
-- name: Install bzip2
+- name: Install bzip2 (to install restic)
   apt:
     name: bzip2
 
@@ -21,7 +22,7 @@
   copy:
     remote_src: true
     src: '/tmp/restic_{{ restic_version }}_linux_amd64'
-    dest: /usr/local/bin/restic
+    dest: "{{ restic_path }}"
     mode: 0755
 
 - name: Remove downloaded file

tasks/main.yml

@@ -2,14 +2,13 @@
 
 - name: Check if restic is installed
   stat: 
-    path: /usr/local/bin/restic
+    path: "{{ restic_path }}"
   register: restic_binary
 
-
 - include_tasks: install.yml
   when: not restic_binary.stat.exists or restic_install
 
-- name: Add SSH config
+- name: Overwrite SSH config for backup server
   template:
     src: ssh_config.j2
     dest: /root/.ssh/config
@@ -24,33 +23,27 @@
     mode: 0600
   when: restic_ssh_private_key is defined
 
-- name: Add restic-env
+- name: Add restic_env in home folder
   template:
-    src: restic-env.j2
-    dest: /root/.restic-env
+    src: restic_env.j2
+    dest: restic_env_file_path
     owner: root
     group: root
     mode: 0600
 
-- name: Add restic-backup.sh
-  template:
-    src: restic-backup.sh.j2
-    dest: /root/restic-backup.sh
-    owner: root
-    group: root
-    mode: 0700
-  vars:
-    restic_folders_combined: '{{ restic_default_folders + restic_folders }}'
-
 - name: Add systemd service for restic
   template:
     src: restic-backup.service.j2
     dest: /etc/systemd/system/restic-backup.service
+  vars:
+    restic_folders_combined: '{{ restic_default_folders + restic_folders }}'
+  notify: systemd reload
 
 - name: Add systemd timer for restic
   template:
     src: restic-backup.timer.j2
     dest: /etc/systemd/system/restic-backup.timer
+  notify: systemd reload
 
 - name: Enable restic timer
   systemd:

templates/restic-backup.service.j2

@@ -3,5 +3,26 @@ Description=Restic backup
 
 [Service]
 Type=oneshot
-ExecStart={{ restic_script_path }}
 User={{ restic_user }}
+Environment="RESTIC_REPOSITORY=sftp:{{ restic_ssh_host }}:{{ restic_repository_name }}"
+Environment="RESTIC_PASSWORD={{ restic_password}}"
+
+{% if restic_check %}
+ExecStartPre={{ restic_path }} check
+{% endif -%}
+
+{% for folder in restic_folders_combined %}
+ExecStart={{ restic_path }} backup --verbose {{ folder.path }} {{ folder.exclude if folder.exclude is defined else '' }}
+{% endfor -%}
+
+{% for database in restic_databases %}
+ExecStart={{ database.dump_command}} | {{ restic_path }} backup --verbose --stdin --stdin-filename {{ database.name }}.sql
+{% endfor -%}
+
+{% if restic_forget %}
+ExecStartPost={{ restic_path }} forget --keep-within {{ restic_forget_keep_within }}
+{% endif -%}
+
+{% if restic_prune %}
+ExecStartPost={{ restic_path }} prune
+{% endif -%}

templates/restic-backup.sh.j2

@@ -1,26 +0,0 @@
-#!/bin/bash
-
-source ~/.restic-env
-
-echo -e "\n`date` - Starting backup...\n"
-
-{% for folder in restic_folders_combined %}
-restic backup --verbose {{ folder.path }} {{ folder.exclude if folder.exclude is defined else '' }}
-{% endfor %}
-
-{% for database in restic_databases %}
-{{ database.dump_command}} | restic backup --verbose --stdin --stdin-filename {{ database.name }}.sql
-{% endfor -%}
-
-echo -e "\n`date` - Running forget and prune...\n"
-
-{% if restic_forget %}
-restic forget --keep-within {{ restic_forget_keep_within }}
-{% endif %}
-
-{% if restic_prune %}
-restic prune
-{% endif %}
-
-echo -e "\n`date` - Backup finished.\n"
-