What was your interaction with databases in the context of using Kubernetes?

When working with databases in Kubernetes, the following approaches are usually used:

• StatefulSet for running a database with state preservation and stable network identifiers.
• PersistentVolume (PV) and PersistentVolumeClaim (PVC) for storing data outside the container, so that data persists across pod restarts.
• Using operators, for example, for PostgreSQL or MongoDB, which automate deployment, scaling, and backups of databases in Kubernetes.

In my experience interacting with databases in Kubernetes, I configured StatefulSet with PVC for reliable data storage, and also used Helm charts and operators to simplify database management.

For example, to run PostgreSQL in Kubernetes, a PVC is created for data storage, and the pod itself is launched via StatefulSet, which guarantees data integrity and network stability.