How to create Application-Aware Backups
It’s possible to define annotations on Pods with backup commands. These backup commands should create an application-aware backup and stream it to stdout.
Define an annotation on a Pod:
<SNIP> template: metadata: labels: app: mariadb annotations: k8up.io/backupcommand: mysqldump -uroot -psecure --all-databases <SNIP>
With this annotation the Operator will trigger that command inside the the container and capture the stdout to a backup. The command is only executed on one Pod, if there are multiple Pods with the same owner reference (e.g. Deployments, Statefulsets etc).
tar to stdout
But it should work with any command that has the ability to output the backup to stdout.