Kubernetes Cluster Monitoring using Grafana & Prometheus

Architecture

+---------------------+
| Kubernetes Cluster |
+----------+----------+
|
v
+---------------------+
| kube-state-metrics |
+---------------------+
|
v
+---------------------+
| Node Exporter |
+---------------------+
|
v
+---------------------+
| Prometheus |
+---------------------+
|
v
+---------------------+
| Grafana Dashboard |
+---------------------+
|
v
+---------------------+
| Email Alerts |
+---------------------+

Prerequisites:

Ubuntu Server
Kubernetes Cluster
kubectl configured
Helm installed

Verify:

kubectl get nodes
helm version

Step 1: Create Monitoring Namespace

kubectl create namespace monitoring

Verify:

kubectl get ns

Step 2: Add Helm Repository

helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update

Check charts:

helm search repo prometheus-community

Step 3: Install Prometheus and Grafana

Install the kube-prometheus-stack package:

helm install monitoring prometheus-community/kube-prometheus-stack \
-n monitoring

Check pods:

kubectl get pods -n monitoring

Step 4: Verify kube-state-metrics

kubectl get pods -n monitoring | grep state

Check service:

kubectl get svc -n monitoring

Step 5: Verify Node Exporter

kubectl get daemonset -n monitoring

Check pods:

kubectl get pods -n monitoring -o wide

Step 6: Access Grafana

Check service:

kubectl get svc -n monitoring

Port forward:

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

create Grafana password:

kubectl get secret monitoring-grafana -n monitoring -o jsonpath="{.data.admin-password}" | base64 -d
echo

Then, open Browser,

http://localhost:3000

Username: admin
Password: (above created password)

Author
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Mahesh Wabale

Admin at DevOpsLover.com

Mahesh Wabale is the admin & author of this blog, Technology enthusiast with interest in DevOps, CICD, Spring Boot, Microservices Architecture He has more than 7 years of experience in IT industry, programming language and development stuff. He loves to share his experience with his blog.