58 lines
1.6 KiB
YAML
58 lines
1.6 KiB
YAML
---
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- name: Configure Borgmatic backup with deterministic offset
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hosts: all
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become: true
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vars:
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borgmatic_bin: /usr/local/bin/borgmatic
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backup_hour: 2 # Base hour to run backups
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backup_window: 1800 # 30 min window (in seconds)
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borgmatic_config_dir: /etc/borgmatic
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tasks:
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- name: Ensure Borg and dependencies are present
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package:
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name:
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- borgbackup
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- python3-pip
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state: present
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- name: Ensure borgmatic is installed via pip
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pip:
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name: borgmatic
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executable: pip3
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- name: Create borgmatic config directory
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file:
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path: "{{ borgmatic_config_dir }}"
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state: directory
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owner: root
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group: root
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mode: '0755'
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- name: Generate deterministic backup offset
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set_fact:
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backup_offset: >-
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{{ (inventory_hostname | hash('md5') | int(base=16)) % backup_window }}
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- name: Split offset into minutes and seconds
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set_fact:
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backup_offset_minutes: "{{ backup_offset // 60 }}"
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backup_offset_seconds: "{{ backup_offset % 60 }}"
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- name: Deploy borgmatic config
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template:
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src: borgmatic-config.yaml.j2
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dest: "{{ borgmatic_config_dir }}/config.yaml"
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owner: root
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group: root
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mode: '0600'
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- name: Create cron job for borgmatic with offset
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cron:
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name: "Nightly borgmatic backup"
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user: root
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hour: "{{ backup_hour }}"
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minute: "{{ backup_offset_minutes }}"
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job: "sleep {{ backup_offset_seconds }} && {{ borgmatic_bin }} --verbosity 1"
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