Kubernetes Monitoring with Prometheus and Grafana

Why Monitor Kubernetes?

Monitoring gives you visibility into cluster health, resource usage, and application performance on your Breeze. Prometheus collects metrics and Grafana visualizes them in dashboards.

Install with Helm

helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update
helm install monitoring prometheus-community/kube-prometheus-stack \
  --namespace monitoring --create-namespace \
  --set prometheus.prometheusSpec.retention=7d \
  --set grafana.adminPassword=YourSecurePassword

Verify the Deployment

kubectl get pods -n monitoring
kubectl get svc -n monitoring

Access Grafana

kubectl port-forward -n monitoring svc/monitoring-grafana 3000:80 --address 0.0.0.0

Visit http://your-breeze-ip:3000 and log in with username admin and the password you set.

Built-in Dashboards

The kube-prometheus-stack includes pre-configured dashboards for:

• Cluster resource usage (CPU, memory, disk)
• Node-level metrics
• Pod and container metrics
• Kubernetes API server health

Query Metrics with PromQL

Access Prometheus directly:

kubectl port-forward -n monitoring svc/monitoring-kube-prometheus-prometheus 9090:9090 --address 0.0.0.0

Example queries:

# CPU usage by namespace
sum(rate(container_cpu_usage_seconds_total[5m])) by (namespace)

# Memory usage by pod
container_memory_working_set_bytes{namespace="default"}

Set Up Alerts

Create a PrometheusRule resource:

apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: app-alerts
  namespace: monitoring
spec:
  groups:
    - name: app
      rules:
        - alert: HighMemoryUsage
          expr: container_memory_working_set_bytes > 500000000
          for: 5m
          labels:
            severity: warning

Prometheus and Grafana give you full observability into everything running on your Breeze.