Step-by-step guide to deploying PostgreSQL on a Kubernetes cluster using StatefulSets, PersistentVolumeClaims, Secrets, and Services. Covers namespace isolation, ConfigMap and Secret setup, storage configuration with DigitalOcean Block Storage, StatefulSet definition with resource limits and health probes, connectivity testing, data persistence verification, and basic backup/restore with pg_dump. Also compares manual YAML, Helm (Bitnami chart), and operator-based deployment approaches, with notes on production considerations and when to use DigitalOcean Managed PostgreSQL instead.
Table of contents
IntroductionKey takeawaysPrerequisitesUnderstanding how Postgres runs on KubernetesStep 1: Create a namespaceStep 2: Create a Secret and ConfigMapStep 3: Create persistent storageStep 4: Create Services for PostgreSQLStep 5: Deploy PostgreSQL with a StatefulSetStep 6: Connect to PostgreSQL and verify persistenceStep 7: Back up and restore a PostgreSQL databaseAlternative method: Deploy PostgreSQL with HelmOperator-based deployments overviewHigh availability and production considerationsFAQsConclusion1 Comment
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