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Wycliffe A. Onyango
Wycliffe A. Onyango

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100 Days of DevOps: Day 58

#devops #kubernetes #containers #linux

Deploy Grafana on Kubernetes

The Nautilus DevOps team has successfully deployed the Grafana analytics tool onto the Kubernetes cluster, setting the stage for collecting and analyzing crucial application metrics. This deployment was achieved using standard Kubernetes manifests to create a Deployment and a NodePort Service, making the Grafana dashboard accessible for the team.

Implementation Details: YAML Configuration

The deployment process involved creating two primary configuration files: grafana-deployment-xfusion.yaml and grafana-service-xfusion.yaml.

1. Grafana Deployment (grafana-deployment-xfusion.yaml)

A Deployment named grafana-deployment-xfusion was created to manage the Grafana application pods, ensuring a persistent and scalable setup. It utilizes the official grafana/grafana:latest image and exposes the application on its default port, 3000.

apiVersion: apps/v1
kind: Deployment
metadata:
  name: grafana-deployment-xfusion
  labels:
    app: grafana
spec:
  replicas: 1
  selector:
    matchLabels:
      app: grafana
  template:
    metadata:
      labels:
        app: grafana
    spec:
      containers:
      - name: grafana
        image: grafana/grafana:latest
        ports:
        - containerPort: 3000
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2. Service Exposure (grafana-service-xfusion.yaml)

To make the Grafana application accessible from outside the Kubernetes cluster, a NodePort Service named grafana-service-xfusion was created. It specifically exposes the service on NodePort 32000, which routes traffic to the target container port 3000.

apiVersion: v1
kind: Service
metadata:
  name: grafana-service-xfusion
spec:
  type: NodePort
  selector:
    app: grafana
  ports:
    - port: 3000
      targetPort: 3000
      nodePort: 32000
      protocol: TCP
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Execution and Verification

The configuration files were applied sequentially using kubectl:

thor@jumphost ~$ kubectl apply -f grafana-deployment-xfusion.yaml
deployment.apps/grafana-deployment-xfusion created

thor@jumphost ~$ kubectl apply -f grafana-service-xfusion.yaml
service/grafana-service-xfusion created
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Verification commands confirmed the successful creation of both resources:

Resource Verification Command Output Highlight
Deployment kubectl get deployment grafana-deployment-xfusion grafana-deployment-xfusion 0/1 1 0
Service kubectl get service grafana-service-xfusion 3000:32000/TCP

The successful creation of the NodePort Service confirmed that the Grafana application is now accessible via any cluster node's IP address on the specified port, http://<Node_IP_Address>:32000. This completes the task, providing the team with a functional, cloud-native analytics solution.

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