[FIXED] How to run a shell command with parameters and credentials in jenkins?

Issue

This is my Jenkinsfile:

pipeline {
    ...
    parameters {
        string(name: 'BACKEND_VERSION', defaultValue: 'latest')
        string(name: 'FRONTEND_VERSION', defaultValue: 'latest')
    }
    environment {
        POSTGRES_PASSWORD = credentials('postgres-password')
    }
    ...
    stages {
        stage('Production Deployment') {
            steps {
                ...
                sh('./terraform apply -var postgres_password=$POSTGRES_PASSWORD -var backend_version=${params.BACKEND_VERSION} -var frontend_version=${params.FRONTEND_VERSION} --auto-approve')
                ...

            }
        }
    }
}

This line:

sh('./terraform apply -var postgres_password=$POSTGRES_PASSWORD -var backend_version=${params.BACKEND_VERSION} -var frontend_version=${params.FRONTEND_VERSION} --auto-approve')

produces this error:

/var/lib/jenkins/workspace/.../script.sh: line 1: syntax error: bad substitution

Using double quotes (sh("./terraform apply ...")) produces this error:

/var/lib/jenkins/workspace/.../script.sh: line 1: syntax error: unterminated quoted string

What's the correct way of string interpolation when we have both environment variables and credentials.

Solution

I'm not sure if it's the best way or not. But I created two new environment variables from parameters:

environment {
    POSTGRES_PASSWORD = credentials('postgres-password')
    BACKEND_VERSION = "${params.BACKEND_VERSION}"
    FRONTEND_VERSION = "${params.FRONTEND_VERSION}"
}

and then use them like this:

sh('./terraform apply -var postgres_password=$POSTGRES_PASSWORD -var backend_version=$BACKEND_VERSION -var frontend_version=$FRONTEND_VERSION --auto-approve')

Answered By - HsnVahedi
Answer Checked By - Gilberto Lyons (JavaFixing Admin)