PostgreSQL on Kubernetes — Complete Setup Guide with CloudNativePG (opens in new tab)

Originally published on DevToolHub, where I keep this guide updated as CloudNativePG evolves. Running PostgreSQL in Kubernetes used to be a bad idea. StatefulSets were tricky, persistent volumes were unreliable, and failover meant data loss. Most teams defaulted to managed cloud databases and called it done. That calculus has changed. CloudNativePG — the CNCF-listed PostgreSQL operator — handles high availability, automated failover, Point-in-Time Recovery, connection pooling, and streaming r...