When to use scripted over declarative in Jenkins - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start a scripted Jenkins pipeline.

Jenkins

node {
    stage('Build') {
        [1] 'echo Building...'
    }
}

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

Ash

Bsteps

Cscript

Dstage

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'steps' instead of 'sh' inside scripted pipeline.

Trying to use 'stage' as a command.

In scripted pipelines, sh runs shell commands inside the node block.

2fill in blank

medium

Complete the code to define a variable in scripted pipeline.

Jenkins

node {
    def message = [1]
    echo message
}

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

AHello from scripted

B'Hello from scripted'

C"Hello from scripted"

Dmessage

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting quotes around the string.

Using variable name instead of string value.

Strings in Groovy (used by scripted pipelines) should be in quotes. Single quotes work well for simple strings.

3fill in blank

hard

Fix the error in the scripted pipeline to run a shell command.

Jenkins

node {
    stage('Test') {
        [1] 'echo Testing...'
    }
}

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

Ascript.sh

Bsteps.sh

Csh

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'steps.sh' which is for declarative pipelines.

Using 'run' which is not a Jenkins step.

The sh step runs shell commands directly in scripted pipelines. Using steps.sh causes an error here.

4fill in blank

hard

Fill both blanks to create a scripted pipeline with a conditional stage.

Jenkins

node {
    if (env.BRANCH_NAME == [1]) {
        stage([2]) {
            sh 'echo Deploying...'
        }
    }
}

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

A'main'

B"Deploy"

C'Deploy'

Dmain

Attempts:

3 left

💡 Hint

Common Mistakes

Using unquoted branch name or stage name.

Mixing single and double quotes incorrectly.

Branch names are strings and need quotes. Stage names also need quotes in scripted pipelines.

5fill in blank

hard

Fill all three blanks to define a scripted pipeline with a loop and shell command.

Jenkins

node {
    for (int i = 0; i < [1]; i++) {
        stage([2]) {
            sh [3]
        }
    }
}

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

A3

B"Loop Stage"

C'echo Running iteration ' + i

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong loop count.

Not quoting stage name.

Not quoting shell command.

The loop runs 5 times. Stage name is a string. Shell command is a string concatenating iteration number.