K8s Databases

Percona Operators for PostgreSQL and MongoDB. (Updated: January 2026). All deployments are idempotent - operators reconcile to desired state.

Percona Operators

Operator Version Database

Percona PostgreSQL v2.8.2 PostgreSQL 18.x

Percona Server MongoDB v1.21.2 MongoDB 8.0.x

Always use latest versions. Operators include built-in backup, monitoring, and HA management.

Deployment Tiers

Tier PostgreSQL MongoDB HA

minimal/small 1 replica 1 replica No

medium/production 3 replicas + PgBouncer 3 replicas (ReplicaSet) Yes

Installation

See references/postgresql.md and references/mongodb.md for deployment.

Get Connections

PostgreSQL

kubectl get secret myapp-pg-pguser-myapp -n databases
-o jsonpath='{.data.uri}' | base64 -d

MongoDB

kubectl get secret myapp-mongo-secrets -n databases
-o jsonpath='{.data.MONGODB_DATABASE_ADMIN_URI}' | base64 -d

Reference Files

• references/postgresql.md - PostgreSQL HA cluster

• references/postgresql-single.md - PostgreSQL single instance

• references/mongodb.md - MongoDB ReplicaSet

• references/backups.md - Backup with MinIO

• references/monitoring.md - Metrics and alerting