Backup databases to Amazon S3 via cron

This image dumps your databases every hour (OR custom cron defined in BACKUP_CRON_SCHEDULE), compresses the dump using bz2 and uploads it to an amazon S3 bucket. With a valid AWS_KEEP_FOR_DAYS backups older than that days are deleted automatically (on the same path). It also have a BACKUP_PRIORITY params for set the backup priority with ionice and nice values.

At the moment, it supports:

• PostgreSQL (pg_dump, versions <= 17)
• MySQL (mysqldump, versions 5.7+ )
• ClickHouse (versions 25+)

Configure the backup source and s3 target with these environment variables:

• AWS_REGION (for example eu-central-1)
• AWS_ACCESS_KEY_ID
• AWS_SECRET_ACCESS_KEY
• AWS_BUCKET_NAME
• AWS_BUCKET_PATH
• AWS_KEEP_FOR_DAYS
• AWS_SHOW_UPLOAD_PROGRESS (ex. true)
• BACKUP_CRON_SCHEDULE
• BACKUP_PRIORITY (default ionice -c 3 nice -n 10)
• COMPRESSION_PRIORITY (ex. ionice -c 3 nice -n 10, null as default)
• DB_TYPE (allowed types: postgres | mysql | clickhouse)
• DB_HOST
• DB_NAME
• DB_TABLE (used and mandatory only with ClickHouse )
• DB_PORT
• DB_USER
• DB_PASSWORD
• DB_OPT_PARAMS (for example with mysql --lock-tables=false --single-transaction --quick )

Usage

You can you this image in two different ways:

• Using the internal cronjob
• Using oneshot
• Using with a k8s cronjob

Internal CronJob Example:

docker run -it --env-file .env leen15/db-backup-to-s3 By default it will run every hour.

Oneshot Example:

docker run -it --env-file .env --entrypoint '/backup/backup.sh' leen15/db-backup-to-s3

K8s cronjob Example:

apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: Database Backup
spec:
  schedule: "0 * * * *"
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: db-backup
            image: leen15/db-backup-to-s3
            imagePullPolicy: IfNotPresent
            command:
            - /backup/backup.sh
            env:
            - name: AWS_ACCESS_KEY_ID
              value: keyID
            - name: AWS_SECRET_ACCESS_KEY
              value: secretKey
            - name: AWS_DEFAULT_REGION
              value: eu-west-1
            - name: AWS_BUCKET_NAME
              value: backups
            - name: AWS_BUCKET_PATH
              value: db-dumps/my-database
            - name: DB_TYPE
              value: mysql
            - name: DB_HOST
              value: db
            - name: DB_NAME
              value: my-database
            - name: DB_PORT
              value: 3306
            - name: DB_USER
              value: user
            - name: DB_PASSWORD
              value: password
            - name: DB_OPT_PARAMS
              value: --lock-tables=false --single-transaction --quick
          restartPolicy: OnFailure

Thanks

Adapted from here, here and here.