Prometheus on Kubernetes — kube-prometheus-stack Helm (v3.12)

The kube-prometheus-stack Helm chart is the standard way to deploy Prometheus on Kubernetes. It bundles Prometheus v3.12, Grafana, Alertmanager, Prometheus Operator, Node Exporter, and kube-state-metrics into a single package. One helm install gives you end-to-end cluster monitoring.

Key Takeaways

• Prometheus v3.12 (stable) / v3.5.4 (LTS) — latest features and security fixes
• Operator pattern — create ServiceMonitor and PrometheusRule CRDs, Prometheus auto-reconfigures
• Built-in dashboards — 20+ pre-configured Grafana dashboards for Kubernetes
• Alertmanager HA — 3 replicas with quorum-based routing
• Production-ready — PVC persistence, resource limits, admission webhooks

Quick Start

helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm install kube-prom prometheus-community/kube-prometheus-stack \
  --namespace monitoring \
  --create-namespace \
  --set prometheus.prometheusSpec.retention=15d \
  --set prometheus.prometheusSpec.storageSpec.volumeClaimTemplate.spec.resources.requests.storage=50Gi \
  --set alertmanager.alertmanagerSpec.replicas=3

For production, use a full values.yaml with HA replicas, PVC storage, Alertmanager routing, and Grafana dashboard provisioning. The guide covers ServiceMonitor/PrometheusRule CRD patterns, storage sizing, and operational best practices.

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Read the full guide: Prometheus on Kubernetes with Helm → — includes complete Helm values, CRD examples, Alertmanager configuration, Grafana integration, and production checklist.