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CloudNativePG Operator deployment

The CloudNativePG operator lives in k8s/infrastructure/database/cloudnative-pg/. Argo CD pulls in the Helm chart with Kustomize's helmCharts integration, so the operator stays fully GitOps managed.

Deployment settings​

  • Namespace: cnpg-system, created through namespace.yaml
  • Chart: cloudnative-pg version 0.26.0 from https://cloudnative-pg.github.io/charts
  • Replica count: set to 2 controllers for availability
  • Barman support: the kustomization.yaml references the Barman cloud plugin manifest so WAL archiving works out of the box
  • In-place updates: the ENABLE_INSTANCE_MANAGER_INPLACE_UPDATES environment variable is enabled for smoother rolling upgrades

Monitoring​

Prometheus rules in rules.yaml raise warnings for long transactions, replication lag, archiving failures, deadlocks, and other health issues. The Helm values also turn on the Grafana dashboard and PodMonitor to expose metrics automatically.