README.md

Environment Variables

The environment directive specifies a sequence of key-value pairs which will be defined as environment variables for all steps, or stage-specific steps, depending on where the environment directive is located within the Pipeline.

 environment { 
    fname = 'kamal'
}

Scope

• If defined at pipeline level, it will apply to all steps within the Pipeline.

pipeline {
    agent {
        label 'ubuntuNode1'
    }
    environment { 
        fname = 'kamal'
    }
    stages {
        stage('Example') {
            steps {
                sh 'echo "HELLO ${fname}"'
            }
        }
    }
}

• If defined within a stage, it will only be accessible to steps within the stage.

pipeline {
    agent {
        label 'ubuntuNode1'
    }
    stages {
        stage('one') {
            environment { 
                fname = 'kamal'
            }
            steps {
                sh 'echo "HELLO ${fname}"'
            }
        }
        stage('two') {
            steps {
                sh 'echo "Hello ${fname}"'
            }
        }
    }
}

This directive supports a special helper method credentials() which can be used to access pre-defined Credentials by their identifier in the Jenkins environment.

If you want to access credentials stored in Jenkins Credential Manager through the pipeline, then you need to use this credentials() method.

And once you put that in the environment variable (say GIT_CREDS), you can access username and password with the names "GIT_CREDS_USR" and "GIT_CREDS_PSW".

pipeline {
    agent any
    environment {
        GIT_CREDS = credentials('gitCredentials')
    }
    stages {
        stage('abc') {
            steps {
                sh 'echo "Git user is $GIT_CREDS_USR"'
                sh 'echo "Git password is $GIT_CREDS_PSW"'
            }
        }
    }
}