Why build environment matters in Jenkins - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the build agent in Jenkins pipeline.

Jenkins

pipeline {
  agent [1]
  stages {
    stage('Build') {
      steps {
        echo 'Building...'
      }
    }
  }
}

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

Adocker

Bnode

Cany

Dlabel

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'node' instead of 'any' causes syntax errors in declarative pipelines.

The agent any directive tells Jenkins to run the pipeline on any available agent.

2fill in blank

medium

Complete the code to run the build inside a Docker container in Jenkins pipeline.

Jenkins

pipeline {
  agent {
    docker [1]
  }
  stages {
    stage('Build') {
      steps {
        sh 'make build'
      }
    }
  }
}

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

A'ubuntu:latest'

B'node:14'

C'python:3.8'

D'alpine:3.12'

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing an image that does not have required tools causes build failures.

The docker 'node:14' agent runs the build inside a Node.js 14 Docker container.

3fill in blank

hard

Fix the error in the Jenkins pipeline code to correctly specify the build environment label.

Jenkins

pipeline {
  agent [1] 'linux'
  stages {
    stage('Test') {
      steps {
        echo 'Testing on Linux agent'
      }
    }
  }
}

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

Aany

Bnode

Cdocker

Dlabel

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'node' or 'any' with a label causes syntax errors.

The agent label 'linux' syntax correctly specifies the build environment by label.

4fill in blank

hard

Fill both blanks to define a Jenkins pipeline that runs on a specific node and executes a shell command.

Jenkins

pipeline {
  agent [1] 'windows'
  stages {
    stage('Deploy') {
      steps {
        [2] 'deploy.bat'
      }
    }
  }
}

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

Alabel

Bsh

Cbat

Ddocker

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'sh' to run Windows batch files causes errors.

agent label 'windows' runs the pipeline on a Windows node, and bat 'deploy.bat' runs a batch script.

5fill in blank

hard

Fill all three blanks to create a Jenkins pipeline that runs inside a Docker container, sets environment variables, and runs a shell command.

Jenkins

pipeline {
  agent {
    docker [1]
  }
  environment {
    NODE_ENV = [2]
  }
  stages {
    stage('Test') {
      steps {
        [3] 'npm test'
      }
    }
  }
}

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

A'node:16'

B'production'

Csh

D'ubuntu:20.04'

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong Docker image or shell command causes build failures.

The pipeline runs inside the node:16 Docker container, sets NODE_ENV to production, and runs tests with sh 'npm test'.