Five Minutes by CloudNativePG River
summary
CloudNativePG is a Kubernetes operator that runs highly available PostgreSQL as primary/standby with native streaming replication, exposing a Cluster CRD that maps to one primary and an arbitrary number of replicas with local PVs (recommended three AZs for a shared‑nothing design). It uses the Kubernetes API as source of truth, supports scale up/down, declarative Postgres configuration, major version upgrades, a kubectl plugin for logs and metrics, declarative databases and logical replication, and backup via VolumeSnapshot and Barman Cloud with a pluggable backup interface.
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