Set Up CI/CD for Go Applications with Jenkins

CI/CD for Go Applications with Jenkins

Jenkins is a popular open-source automation server that enables Continuous Integration and Continuous Deployment (CI/CD). It can build, test, and deploy Go applications automatically. This guide explains how to set up a CI/CD pipeline for Go using Jenkins and Docker.

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Step 1: Install Jenkins

sudo apt update

sudo apt install openjdk-11-jdk -y

wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -

sudo sh -c 'echo deb https://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'

sudo apt update

sudo apt install jenkins -y

Enable and start Jenkins:

sudo systemctl enable jenkins

sudo systemctl start jenkins

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Step 2: Install Required Plugins

• Git Plugin
• Docker Pipeline Plugin
• Pipeline Plugin

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Step 3: Create a Dockerfile

Create a file named Dockerfile:

FROM golang:1.20-alpine AS builder WORKDIR /app COPY . . RUN go build -o server . FROM alpine:latest WORKDIR /app COPY --from=builder /app/server . CMD ["./server"]

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Step 4: Create Jenkins Pipeline (Jenkinsfile)

Create a file named Jenkinsfile in your repository:

pipeline { agent any environment { DOCKER_IMAGE = "mydockerhub/go-server" } stages { stage('Checkout') { steps { git branch: 'main', url: 'https://github.com/your-repo/go-server.git' } } stage('Build') { steps { sh 'go mod tidy' sh 'go build -o server .' } } stage('Test') { steps { sh 'go test ./...' } } stage('Docker Build & Push') { steps { sh 'docker build -t $DOCKER_IMAGE:latest .' sh 'echo $DOCKER_PASSWORD | docker login -u $DOCKER_USERNAME --password-stdin' sh 'docker push $DOCKER_IMAGE:latest' } } stage('Deploy') { steps { sh 'ssh user@your-server-ip "docker pull $DOCKER_IMAGE:latest && docker run -d -p 8080:8080 $DOCKER_IMAGE:latest"' } } } }

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Step 5: Configure Jenkins Credentials

In Jenkins → Manage Jenkins → Credentials, add:

• DOCKER_USERNAME → Your Docker Hub username
• DOCKER_PASSWORD → Your Docker Hub password or token

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Step 6: Run the Pipeline

Commit and push your Jenkinsfile to the repository. Jenkins will automatically build, test, and deploy your Go application whenever changes are pushed to the main branch.

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Best Practices

• Run tests on every commit to catch errors early
• Use Docker for consistent builds across environments
• Automate deployments with Jenkins pipelines
• Use staging environments before production deployment
• Monitor Jenkins logs for troubleshooting

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Note: HostPalace offers CI/CD-ready servers with Jenkins integration for seamless Go application deployment.