Parameterized builds in Jenkins - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a string parameter named 'ENV' in a Jenkins pipeline.

Jenkins

parameters {
    string(name: '[1]', defaultValue: 'dev', description: 'Environment')
}

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

AENV

Benvironment

CenvVar

Denv

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase or different names like 'env' or 'environment' which won't match the parameter usage.

The parameter name must exactly match 'ENV' to be used consistently in the pipeline.

2fill in blank

medium

Complete the code to access the parameter 'ENV' inside the Jenkins pipeline script.

Jenkins

pipeline {
    agent any
    stages {
        stage('Build') {
            steps {
                echo "Building for environment: [1]"
            }
        }
    }
}

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Abuild.ENV

Bparams.ENV

Cparameters.ENV

Denv.ENV

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'env.ENV' which refers to environment variables, not parameters.

Using 'parameters.ENV' which is not valid syntax.

In Jenkins pipelines, parameters are accessed using the 'params' object, e.g., params.ENV.

3fill in blank

hard

Fix the error in the parameter definition to correctly define a boolean parameter named 'RUN_TESTS'.

Jenkins

parameters {
    booleanParam(name: '[1]', defaultValue: true, description: 'Run tests')
}

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ARUN_TESTS

BRunTests

Crun_tests

DrunTests

Attempts:

3 left

💡 Hint

Common Mistakes

Using camelCase or lowercase names that don't match the parameter usage.

Parameter names are case-sensitive and usually uppercase with underscores for clarity and consistency.

4fill in blank

hard

Fill both blanks to define a choice parameter named 'DEPLOY_ENV' with options 'dev', 'staging', and 'prod'.

Jenkins

parameters {
    choice(name: '[1]', choices: [2], description: 'Select deployment environment')
}

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ADEPLOY_ENV

B['dev', 'staging', 'prod']

C['prod', 'staging', 'dev']

DDEPLOYENV

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect parameter names or wrong order of choices.

Not using a list format for choices.

The parameter name should be 'DEPLOY_ENV' and choices must be a list of strings in the desired order.

5fill in blank

hard

Fill all three blanks to create a pipeline that uses a string parameter 'VERSION', checks if it is not empty, and echoes the version.

Jenkins

pipeline {
    agent any
    parameters {
        string(name: '[1]', defaultValue: '', description: 'Version to build')
    }
    stages {
        stage('Check Version') {
            steps {
                script {
                    if (params.[2] [3] '') {
                        echo "Building version: ${params.VERSION}"
                    } else {
                        error 'Version parameter is empty!'
                    }
                }
            }
        }
    }
}

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AVERSION

C!=

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '==' instead of '!=' causing the logic to invert.

Mismatching parameter names between definition and usage.

The parameter name is 'VERSION'. To check if it is not empty, use 'params.VERSION != '''.