container-backup

THIS DOCKERFILE IS OBSOLETE

Please now consider looking at this other Dockerfiles:

• Volume-Backup to backup volumes
• MySQL-Backup to backup mysql database

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Container Backup

This image is used to backup data from your container in a scheduled period.

It can backup :

• mounted volume from another volume
• linked mysql/mariadb databases

Usage

There are two ways to run this tool.

• run as daemon and backup volumes on schedules
• run as one time backup

Examples

• Backup all mounted volumes and linkes databases on daily basis

docker run -d --rm \
    --link mysql_container \
    -v $(pwd)/backups/:/backups \
    --volumes-from nginx_container \
    -e SCHEDULE="daily" \
    jeckel\container-backup

This will use the backups folder as a target :

• mounted folder's name is used as a basename for the backup files.
• linked mysql's name is used as a basename for the dump files.

For example, using the option -v /path/to/volume:/project will backup the volume folder into a tar.gz file called backup_project_<datetime>.tar.gz

• Make a one time backup

docker run --rm -it \
    --link mysql_container \
    -v $(pwd)/backups/:/backups \
    --volumes-from nginx_container \
    jeckel\container-backup backup.sh

Environments

Some environment variable has default value, so you needn't set all of them in most cases.

• SCHEDULE: Schedule of backups, default is "daily"
• VOLUME : Specify which mounted volume to backup, is not defined, all mounted volumes (except /backups) will be backup
• DUMP_DEBUG : If set to "true" then show verbose infos, default is "false"

Schedule syntax:

• "hourly": 0 minute every hour.
• "daily": 02:00 every day.
• "weekly": 03:00 on Sunday every week.
• "monthly": 05:00 on 1st every month.
• "0 5 * * 6": crontab syntax.

in docker-compose with wordpress

version: '2'
services:
  wordpress:
    image: wordpress
    depends_on:
      - mysql
    ports:
      - 8080:80
    environment:
      - WORDPRESS_DB_PASSWORD=wordpress
  mysql:
    image: mariadb
    environment:
      - MYSQL_ROOT_PASSWORD=wordpress
      - MYSQL_DATABASE=wordpress
      - MYSQL_USER=wordpress
      - MYSQL_PASSWORD=wordpress
  backup:
    image: jeckel/container-backup
    depends_on:
      - wordpress
      - mysql
    links:
      - mysql
    volumes:
      - ./backups:/backups
    volumes_from:
      - wordpress
      - mysql

In this example :

• all volumes from the wordpress and mysql container will be archived in a tar.gz file in the backups folder
• database from mysql container will be dumped

Current limitation

MySQL dump is base on environment variables, so only one database per container will be dumped.