A docker container image for scheduling backup of the volume.
This container runs cron, and compress /data/ directory to /backup/ directory as a tar.gz file every day.
$ docker run -d -v your-data:/data:ro -v $(pwd):/backup -v /etc/localtime:/etc/localtime:ro ghcr.io/macrat/volume-backupIn default, it runs backup on 2:42 every day, and retain 3 versions. You can customize this behavior via environment variables.
Note: You can not stop this container with Ctrl-C. Please use docker stop command.
| Environment Variable | Default | Description |
|---|---|---|
| BACKUP_SCHEDULE | 42 2 * * * |
Schedule in crontab spec. |
| BACKUP_PREFIX | backup- |
Prefix string of backup file. |
| BACKUP_RETAIN_NUM | 3 |
Number of retain backup versions. 0 or negative value means don't remove old files. |
| BACKUP_UID | 1000 |
Backup file owner's UID. |
| BACKUP_GID | same as UID | Backup file owner's GID. |
# For example, retain backup files 7 days.
$ docker run -d -v your-data:/data:ro -v $(pwd):/backup -e BACKUP_RETAIN_NUM=7 ghcr.io/macrat/volume-backup
# Or, backup once a week, every sunday.
$ docker run -d -v your-data:/data:ro -v $(pwd):/backup -e BACKUP_SCHEDULE='0 0 * * 0' ghcr.io/macrat/volume-backup