backup

1---
2# Restore one /docker/<svc> directory from its latest snapshot on this host.
3
4- name: "{{ svc }} - Find the latest snapshot on {{ inventory_hostname }}"
5  ansible.builtin.command:
6    argv: ["{{ backup_restic_bin }}", snapshots, --json, --latest, "1", --host, "{{ inventory_hostname }}", --tag, "{{ svc }}"]
7  environment:
8    RESTIC_REPOSITORY: "{{ restic_repo }}"
9    RESTIC_PASSWORD: "{{ restic_password }}"
10  register: _rs_snapshots
11  changed_when: false
12
13- name: "{{ svc }} - Pick the snapshot"
14  ansible.builtin.set_fact:
15    _rs_snapshot: "{{ (_rs_snapshots.stdout | from_json | sort(attribute='time') | last) if (_rs_snapshots.stdout | from_json | length > 0) else {} }}"
16
17- name: "{{ svc }} - Fail if there is no snapshot"
18  ansible.builtin.fail:
19    msg: "No snapshot with tag {{ svc }} for host {{ inventory_hostname }}"
20  when: _rs_snapshot | length == 0
21
22- name: "{{ svc }} - Find its running containers"
23  community.docker.docker_host_info:
24    containers: true
25    containers_filters:
26      label: "com.docker.compose.project={{ svc }}"
27      status: running
28  register: _rs_info
29
30- name: "{{ svc }} - Remember the running containers"
31  ansible.builtin.set_fact:
32    _rs_running: "{{ _rs_info.containers | map(attribute='Names') | map('first') | map('regex_replace', '^/', '') | sort }}"
33
34- name: "{{ svc }} - Restore snapshot {{ _rs_snapshot.short_id }} from {{ _rs_snapshot.time[:19] }}"
35  block:
36    - name: "{{ svc }} - Stop running containers"
37      ansible.builtin.command:
38        argv: "{{ ['docker', 'stop', '--time', '60'] + _rs_running }}"
39      when: _rs_running | length > 0
40
41    - name: "{{ svc }} - Remove the current directory"
42      ansible.builtin.file:
43        path: "{{ backup_docker_root }}/{{ svc }}"
44        state: absent
45
46    - name: "{{ svc }} - restic restore"
47      ansible.builtin.command:
48        argv:
49          - "{{ backup_restic_bin }}"
50          - restore
51          - "{{ _rs_snapshot.id }}"
52          - --target
53          - /
54          - --include
55          - "{{ backup_docker_root }}/{{ svc }}"
56      environment:
57        RESTIC_REPOSITORY: "{{ restic_repo }}"
58        RESTIC_PASSWORD: "{{ restic_password }}"
59      changed_when: true
60
61  always:
62    - name: "{{ svc }} - Start the containers that were running"
63      ansible.builtin.command:
64        argv: "{{ ['docker', 'start'] + _rs_running }}"
65      when: _rs_running | length > 0
66
67- name: "{{ svc }} - Restored"
68  ansible.builtin.debug:
69    msg: >-
70      {{ svc }} restored from snapshot {{ _rs_snapshot.short_id }} ({{ _rs_snapshot.time[:19] }}).
71      Restarted: {{ _rs_running | join(', ') or 'nothing was running' }}.
72