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README.md

S3 Backup Docker image

Docker image that performs periodic backups on a chosen directory and then uploads the results to Amazon S3. It was initially made by Andrés García Mangas for MongoDB backups: https://github.com/agmangas/mongo-backup-s3 I refactored the code to backup whole directories.

Based on the dbader/schedule Python scheduling package.

Configuration

The following table describes the available configuration environment variables.

Name Description Default
BACKUP_SOURCE Name of the directory to backup, that must be connected to the container as a volume at location /data/${BACKUPSOURCE} Required
S3_BUCKET Amazon S3 bucket name Required
AWS_ACCESS_KEY_ID Amazon AWS access key Required
AWS_SECRET_ACCESS_KEY Amazon AWS secret Required
BACKUP_INTERVAL Interval between each backup (days) 1
BACKUP_TIME Hour of the day at which the backup will be executed 2:00
DATE_FORMAT Date format string used as the suffix of the backup filename %Y%m%d-%H%M%S
FILE_PREFIX Prefix of the backup filename backup-

Example

The following command starts a wiki-backups container that will stay in the background uploading backups of the wiki directory on the my-mongo-host MongoDB instance every day at 2:00. The backups will be uploaded to an S3 bucket named my-s3-bucket:

docker run -d -e BACKUP_SOURCE=wiki -v CUSTOM_PATH/wiki:/data/wiki -e S3_BUCKET=my-s3-bucket -e AWS_ACCESS_KEY_ID=<your_access_key> -e AWS_SECRET_ACCESS_KEY=<your_access_secret> -e BACKUP_INTERVAL=1 --name wiki_backups wojzag/directory-backup