courseworkrep/backup_postgresql.yml

---
  - name: Backup PostgreSQL and create cron
    hosts: postgres_servers
    become: true
  
    vars:
      backup_dir: "{{ backup_dir }}" 
  
    tasks:
      - name: Create backup directory
        file:
          path: "{{ backup_dir }}"
          state: directory
          owner: postgres
          group: postgres
          mode: '0755'
  
      - name: PostgreSQL database backup
        become_user: postgres
        command: >
          pg_dump -U {{ postgres_user }}
          -F c
          -f "{{ backup_dir }}/db_backup_{{ postgres_db }}_{{ ansible_date_time.iso8601 }}.sql"
          {{ postgres_db }}
        environment:
          PGPASSWORD: "{{ postgres_password }}"
  
      - name: Create cron backup script
        cron:
          name: "PostgreSQL hourly backup"
          user: postgres
          minute: "0"
          hour: "*"
          job: 'pg_dump -U {{ postgres_user }} -F c {{ postgres_db }} > {{ backup_dir }}/db_backup_{{ postgres_db }}_$(date +\%F-\%H-\%M).sql'
        environment:
          PGPASSWORD: "{{ postgres_password }}"