MongoDB 4.0 S3 docker/kubernetes backup

Docker image to backup MongoDB 4.0 to S3 using mongodump and compress using pigz.

Advantages/features

• Supports custom S3 endpoints (e.g. minio)
• Uses piping instead of tmp file
• Compression is done with pigz (parallel gzip)
• Creates bucket if it's not created
• Can be run in Kubernetes or Docker
• PGP encryption
• TODO: Add other compression methods
• TODO: Add other dbs (e.g. postgres, mysql)

Configuration

S3_BUCK=mongo1-backups
S3_NAME=folder-name/backup-name-prefix
S3_URI=https://s3-key:s3-secret@s3.host.tld
MONGO_URI=mongodb://mongo-host:27017/db-name
GPG_KEYSERVER=keyserver.ubuntu.com # your hpks keyserver
GPG_KEYID=<key_id> # recipient key, backup will be encrypted if added

Or see docker-compose.yml file to run this container with Docker.

Cron backup with kubernetes

See kubernetes.cronjob.yml file.