add restic role

roles/restic/defaults/main.yaml

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+---
+restic_service_name: restic.service
+restic_service_state: started
+restic_service_enabled: yes
+
+restic_arch: amd64
+restic_version: 0.9.6
+restic_url: "https://github.com/restic/restic/releases/download/v{{ restic_version }}/restic_{{ restic_version }}_linux_{{ restic_arch }}.bz2"
+restic_checksum: sha256:a88ca09d1dd051d470965667a224a2b81930c6628a0566b7b17868be40207dc8
+restic_bin_path: /usr/local/bin
+restic_etc_path: /etc/restic
+restic_path: "{{ restic_bin_path }}/restic"
+
+restic_repos: []
+restic_jobs: []

roles/restic/tasks/job.yaml

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+---
+- name: create job config directory
+  file:
+    path: "{{ restic_etc_path }}/jobs/{{ item.name }}"
+    owner: root
+    group: root
+    mode: 0755
+    state: directory
+
+- name: create job exclude file
+  template:
+    src: exclude.txt.j2
+    dest: "{{ restic_etc_path }}/jobs/{{ item.name }}/exclude.txt"
+    owner: root
+    group: root
+    mode: 0644
+
+- name: create cron
+  cron:
+    name: "restic {{ item.name }} job"
+    hour: "{{ item.cron.hour | default(omit) }}"
+    minute: "{{ item.cron.minute | default(omit) }}"
+    day: "{{ item.cron.day | default(omit) }}"
+    month: "{{ item.cron.month | default(omit) }}"
+    weekday: "{{ item.cron.weekday | default(omit) }}"
+    user: "{{ item.cron.user | default('root') }}"
+    state: "{{ item.cron.state | default('present') }}"
+    job: ". {{ restic_etc_path }}/repos/{{ item.repo }}/env.sh && restic backup -q --exclude-file {{ restic_etc_path }}/jobs/{{ item.name }}/exclude.txt {{ item.paths | join(' ') }}"

roles/restic/tasks/main.yaml

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+---
+- name: gather os specific variables
+  include_vars: "{{ lookup('first_found', possible_files) }}"
+  vars:
+    possible_files:
+      files:
+        - "{{ ansible_distribution }}-{{ ansible_distribution_version }}.yaml"
+        - "{{ ansible_distribution }}.yaml"
+        - "{{ ansible_os_family }}.yaml"
+        - "default.yaml"
+      paths:
+        - vars
+
+- name: include os specific tasks
+  include_tasks: "{{ lookup('first_found', possible_files) }}"
+  vars:
+    possible_files:
+      files:
+        - "{{ ansible_distribution }}-{{ ansible_distribution_version }}.yaml"
+        - "{{ ansible_distribution }}.yaml"
+        - "{{ ansible_os_family }}.yaml"
+        - "default.yaml"
+      paths:
+        - tasks
+
+- name: "download restic {{ restic_version }}"
+  get_url:
+    url: "{{ restic_url }}"
+    checksum: "{{ restic_checksum }}"
+    dest: "{{ restic_path }}.bz2"
+    owner: root
+    group: root
+    mode: 0400
+  register: dl
+
+- name: determine if restic exists
+  stat:
+    path: "{{ restic_path }}"
+  register: st
+
+- name: decompress restic
+  command:
+    cmd: "bunzip2 -k {{ restic_path }}.bz2"
+    creates: "{{ restic_path }}"
+  when: dl.changed or not st.stat.exists
+  #notify:
+  #  - restart restic
+
+- name: manage restic attributes
+  file:
+    path: "{{ restic_path }}"
+    owner: root
+    group: root
+    mode:  0755
+
+- name: create etc tree
+  file:
+    path: "{{ item }}"
+    state: directory
+    owner: root
+    group: root
+    mode: 0755
+  loop:
+    - "{{ restic_etc_path }}"
+    - "{{ restic_etc_path }}/repos"
+    - "{{ restic_etc_path }}/jobs"
+
+- name: manage repos
+  include: repo.yaml
+  loop: "{{ restic_repos | default([]) }}"
+
+- name: manage jobs
+  include: job.yaml
+  loop: "{{ restic_jobs | default([]) }}"

roles/restic/tasks/repo.yaml

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+---
+- name: get repo status
+  shell:
+    cmd: restic -q -r {{ item.repo }} snapshots 2> /dev/null 
+  ignore_errors: yes
+  environment: "{{ item.environment | default({}) }}"
+  register: restic_init
+
+- name: init repos
+  shell:
+    cmd: restic -q -r {{ item.repo }} init
+  environment: "{{ item.environment | default({}) }}"
+  when: restic_init.rc != 0
+
+- name: create repo config directory
+  file:
+    path: "{{ restic_etc_path }}/repos/{{ item.name }}"
+    owner: root
+    group: root
+    mode: 0755
+    state: directory
+
+- name: create repo env directory
+  file:
+    path: "{{ restic_etc_path }}/repos/{{ item.name }}"
+    owner: root
+    group: root
+    mode: 0755
+    state: directory
+
+- name: create repo environment helper
+  template:
+    src: env.sh.j2
+    dest: "{{ restic_etc_path }}/repos/{{ item.name }}/env.sh"
+    owner: root
+    group: root
+    mode: 0400

roles/restic/templates/env.sh.j2

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+#!/bin/bash
+
+export RESTIC_REPOSITORY="{{ item.repo }}"
+{% for k, v in item.environment.items() %}
+export {{ k | upper }}="{{ v }}"
+{% endfor %}

roles/restic/templates/exclude.txt.j2

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+{% for exclude in item.exclude %}
+{{ exclude }}
+{% endfor %}