How did you configure Jenkins, using its configuration files or the interface?

Jenkins can be configured in two main ways:

1. Through the web interface — the most common method. In the browser, access the Jenkins control panel, where you can create and configure jobs, connect plugins, set global parameters, etc.

2. Through configuration files — Jenkins stores job configurations and system settings in XML files on the server (usually in the JENKINS_HOME folder). You can edit these files manually or use infrastructure as code (e.g., Jenkins Job DSL or Jenkins Pipeline) to describe jobs in code and automatically apply configurations.

Example of using Jenkins Pipeline in Jenkinsfile:

pipeline {
    agent any
    stages {
        stage('Build') {
            steps {
                echo 'Building...'
            }
        }
        stage('Test') {
            steps {
                echo 'Testing...'
            }
        }
    }
}

This approach allows storing configuration in version control systems and automating Jenkins setup.