Deploy Jenkins in the Kubernetes cluster

Deploy Jenkins in the Kubernetes cluster

Deploying Jenkins on a Kubernetes cluster can be quite beneficial for managing CI/CD pipelines efficiently. Here's a general guide to get you started:

Prerequisites:

• You should have a running Kubernetes cluster.

• kubectl should be configured to connect to your cluster.

Check Kubernetes cluster and nodes

kubectl get nodes

Setup Jenkins deployment

Create the Jenkins directory and navigate the directory

mkdir jenkins
cd jenkins

Create a Jenkins deployment YAML file

Create a YAML file called jenkins-deployment.yaml with the following content

vi  jenkins-deployment.yaml 

apiVersion: apps/v1
kind: Deployment
metadata:
  name: jenkins
spec:
  replicas: 1
  selector:
    matchLabels:
      app: jenkins
  template:
    metadata:
      labels:
        app: jenkins
    spec:
      containers:
      - name: jenkins
        image: jenkins/jenkins:lts
        ports:
        - name: http-port
          containerPort: 8080
        - name: jnlp-port
          containerPort: 50000
        volumeMounts:
        - name: jenkins-vol
          mountPath: /var/jenkins_home
      volumes:
      - name: jenkins-vol
        emptyDir: {}

Create a Jenkins service YAML file

Expose the Jenkins deployment using a NodePort service:

vi jenkins-service.yaml

apiVersion: v1
kind: Service
metadata:
  name: jenkins
spec:
  selector:
    app: jenkins
  ports:
  - name: http-port
    port: 8080
    targetPort: 8080
    nodePort: 30000
  type: NodePort

Apply the YAML file to create the Jenkins service:

kubectl apply -f jenkins-deployment.yaml 

kubectl apply -f jenkins-service.yaml

Check the service's

kubectl get all

To verify if the Jenkins service is running from your terminal, execute the following command:

Access Jenkins:

Access Jenkins using the external IP and NodePort:

Navigate to the NeevCloud panel > Server > Select your node > copy Public_IP

Check Node Port

http://Node_IP: Nodeport

Run this path on your terminal using the sudo (root user)