How to create parameterized job in Jenkins? What is parameterized build in Jenkins?

 

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Pipeline Script Fundamentals

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Step 1. Create a freestyle Job.

Create a freestyle job with an appropriate name.

Step 2. Create Parameters option from the dropdown.

✔  Select This project is parameterized in the General section

✔  Click Add Parameter.

✔  Select Choice Parameter

Step 3. Configure Choice Parameter

Configure the fields as follows

✔  Name – give a suitable name for your parameter. For eg. Environment

✔  Choices – give the values one per line that will appear in the drop-down option.

✔  Description – describe the parameter.

Step 4. Configure Build Step.

✔  Choose Execute Shell and print something using the parameter.

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Step 5. Build the project.

✔  Click on Build with Parameters

✔  Choose any value from the drop-down and click on Build, you will see all the choice parameters here in the dropdown

Step 6. Check the Console Output.

In the console, the selected value gets printed instead of $OS. You build the project with different values from the drop-down and you will always get the selected value in console output.

There are many parameters available in Jenkins:

Available Parameters

string

A parameter of a string type, for example: parameters { string(name: 'DEPLOY_ENV', defaultValue: 'staging', description: '') }

text

A text parameter, which can contain multiple lines, for example: parameters { text(name: 'DEPLOY_TEXT', defaultValue: 'One\nTwo\nThree\n', description: '') }

booleanParam

A boolean parameter, for example: parameters { booleanParam(name: 'DEBUG_BUILD', defaultValue: true, description: '') }

choice

A choice parameter, for example: parameters { choice(name: 'CHOICES', choices: ['one', 'two', 'three'], description: '') }

password

A password parameter, for example: parameters { password(name: 'PASSWORD', defaultValue: 'SECRET', description: 'A secret password') }

Example 10. Parameters, Declarative Pipeline

pipeline {
    agent any
    parameters {
        string(name: 'PERSON', defaultValue: 'Mr Jenkins', description: 'Who should I say hello to?')

        text(name: 'BIOGRAPHY', defaultValue: '', description: 'Enter some information about the person')

        booleanParam(name: 'TOGGLE', defaultValue: true, description: 'Toggle this value')

        choice(name: 'CHOICE', choices: ['One', 'Two', 'Three'], description: 'Pick something')

        password(name: 'PASSWORD', defaultValue: 'SECRET', description: 'Enter a password')
    }
    stages {
        stage('Example') {
            steps {
                echo "Hello ${params.PERSON}"

                echo "Biography: ${params.BIOGRAPHY}"

                echo "Toggle: ${params.TOGGLE}"

                echo "Choice: ${params.CHOICE}"

                echo "Password: ${params.PASSWORD}"
            }
        }
    }
}

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