Ansible Role for Backups with Samba Share

This ansible role configures autofs to mount a samba share and configure a script to run regular backups.

Role Variables

There are three required variables you need to set:

• backup_smb_user: the user that will access the backup cloud
• backup_smb_password: the password for this user
• backup_script: The shell commands to run for creating a backup
• backup_metrics_path: Write Prometheus metrics about updates to this file

Have a look at the defaults to see all variables and how to set them.

Prometheus Metrics

The backup automation can create metrics for Prometheus. The metrics are written to file which can then be exposed via a web server like Apache or Nginx. The metrics provide the time of the last successful backup.

# HELP backup_time Time stamp of backup
# TYPE backup_time counter
backup_time 1735876976

Example Playbook

Your playbook, could look like this:

- hosts: all
  become: true
    - role: uos.smb_backup
      vars:
        backup_smb_share: //smb.example.com/backup
        backup_smb_user: samba_user
        backup_smb_password: samba_user_password
        backup_script: |
          FILENAME="{{ backup_mountpoint }}/$(date '+%Y%m%d-%H%M%S').sql.gz"
          mysqldump -u root dbname | gzip > "${FILENAME}"
        backup_metrics_path: /var/lib/nginx/backup/metrics

License

BSD-3-Clause