Blue-green deployment pattern in Jenkins - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define the two environments used in blue-green deployment.

Jenkins

def deployTo[1]() {
    echo 'Deploying to environment'
}

Drag options to blanks, or click blank then click option'

Agreen

Bblue

Ctest

Dprod

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'test' or 'prod' instead of 'blue' or 'green'.

The blue-green deployment pattern uses two environments named 'blue' and 'green'. Here, 'blue' is used as the environment name.

2fill in blank

medium

Complete the code to switch traffic to the new environment in blue-green deployment.

Jenkins

stage('Switch Traffic') {
    steps {
        script {
            sh 'kubectl [1] service blue-service green-service'
        }
    }
}

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Apatch

Breplace

Cdelete

Drollout

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'delete' which removes the service, causing downtime.

In blue-green deployment, 'kubectl patch' is used to switch the service from blue to green environment smoothly.

3fill in blank

hard

Fix the error in the Jenkins pipeline step to deploy to the green environment.

Jenkins

stage('Deploy Green') {
    steps {
        [1] 'deploy-green.sh'
    }
}

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Ash

Bpowershell

Cbat

Dscript

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'bat' which is for Windows batch scripts.

The 'sh' step runs shell scripts in Jenkins pipelines on Unix-like agents. Here, it correctly runs 'deploy-green.sh'.

4fill in blank

hard

Fill both blanks to create a Jenkins stage that deploys to blue and green environments sequentially.

Jenkins

stage('Deploy Both') {
    steps {
        [1] 'deploy-[2].sh'
    }
}

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Ash

Bbat

Cblue

Dgreen

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'bat' on Unix agents or wrong environment name.

The 'sh' step runs shell scripts. The script name includes the environment name, here 'blue'.

5fill in blank

hard

Fill all three blanks to define a Jenkins pipeline snippet that deploys to green, switches traffic, and verifies deployment.

Jenkins

pipeline {
    agent any
    stages {
        stage('Deploy Green') {
            steps {
                [1] 'deploy-green.sh'
            }
        }
        stage('Switch Traffic') {
            steps {
                script {
                    sh 'kubectl [2] service blue-service green-service'
                }
            }
        }
        stage('Verify') {
            steps {
                [3] 'curl -f http://green.example.com/health'
            }
        }
    }
}

Drag options to blanks, or click blank then click option'

Ash

Bpatch

Dbat

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'bat' on Unix agents or wrong kubectl command.

The 'sh' step runs shell commands for deployment and verification. 'kubectl patch' switches traffic to green.