Backup docker volumes

stop containers -> archive volumes -> start containers -> delete old archives

Archives directory is synced with Resilio.

Usage

docker run --rm \
    -v /var/run/docker.sock:/var/run/docker.sock \
    01e9/docker-backup \
    -c some_container \
    -d some_volume_name:some_dir_name \
    -c another_container \
    -d another_volume_name:another_dir_name \
    -d more_volume_name:more_dir_name/sub_dir

Optional environment variables

BACKUP_TIME='03:00:00'
TZ=Europe/Chisinau

Makes BACKUP_TIME match host machine time.

Command to get timezone (on Ubuntu) cat /etc/timezone.
RESILIO_SECRET_RW='...'

By default it will be generated automatically and printed in console.

You can find it inside container in /etc/resilio.conf.

Command to generate a read/write secret rslsync --generate-secret.
SLACK_WEBHOOK='https://hooks.slack.com/services/...'

It will send in Slack channel messages like "Backup started/finished/error".

https://api.slack.com/incoming-webhooks

docker-compose example

services:
    my_backup:
        image: 01e9/docker-backup
        volumes:
            - /var/run/docker.sock:/var/run/docker.sock
        environment:
            TZ: "Europe/Chisinau"
            RESILIO_SECRET_RW: "A6Z...7VE"
        command: [
            "-c", "container_1",
            "-c", "container_2",
            "-d", "volume_name_1:directory_name_1",
            "-d", "volume_name_2:directory_name_2/sub_directory_1",
        ]
        restart: unless-stopped