Question

A DevOps team is migrating a PostgreSQL database into a Kubernetes cluster running on managed cloud infrastructure. The database must retain its data even if the pod is rescheduled to a different worker node after a failure. Which architectural approach should the team implement to meet this requirement?

Accepted Answer

Deploy the database using a StatefulSet backed by a PersistentVolume provisioned from network-attached block storage

Answer

Store the database files on the container's local ephemeral filesystem to maximize I/O performance

Answer

Run the database as a Deployment with multiple replicas sharing the node's temporary emptyDir volume

Answer

Bake the current database contents into the container image and redeploy the image on each node change