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403 — Monitoring and Observability

Advanced

Master Kubernetes monitoring with Prometheus and Grafana, implement logging, and establish observability for production clusters.

Learning Objectives

1
Deploy Prometheus for metrics collection
2
Visualize metrics with Grafana dashboards
3
Implement centralized logging
4
Monitor cluster health and application performance
Step 1

Install Prometheus with Helm

Deploy Prometheus monitoring stack.

Commands to Run

helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update
helm install prometheus prometheus-community/kube-prometheus-stack --create-namespace --namespace monitoring
kubectl get pods -n monitoring

What This Does

kube-prometheus-stack includes Prometheus, Grafana, AlertManager, and exporters. Complete monitoring solution.

Expected Outcome

Multiple pods created in monitoring namespace: prometheus, grafana, alertmanager, exporters.

Pro Tips

  • 1
    Stack includes pre-configured dashboards
  • 2
    Prometheus scrapes metrics from K8s and apps
  • 3
    Wait for all pods to be Running
  • 4
    Stack uses custom resources (CRDs)

Common Mistakes to Avoid

  • ⚠️Expecting kubectl top to work without Metrics Server installed
  • ⚠️Not allocating enough resources for Prometheus (high memory usage)
  • ⚠️Forgetting to configure persistent storage for production
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