CI/CD

How to acquire multiple nodes for one specific build?

Difficulty: unrated

Source: bregman-arie/devops-exercises by Arie Bregman

Answer

To acquire multiple nodes for a specific build in Jenkins, you can use the "Parallel" feature in the pipeline script. The "Parallel" feature allows you to run multiple stages in parallel, and each stage can run on a different node.

Here is an example pipeline script that demonstrates how to acquire multiple nodes for a specific build:

pipeline {
    agent any
    stages {
        stage('Build') {
            parallel {
                stage('Node 1') {
                    agent { label 'node1' }
                    steps {
                        // Run build commands on Node 1
                    }
                }
                stage('Node 2') {
                    agent { label 'node2' }
                    steps {
                        // Run build commands on Node 2
                    }
                }
                stage('Node 3') {
                    agent { label 'node3' }
                    steps {
                        // Run build commands on Node 3
                    }
                }
            }
        }
        stage('Deploy') {
            agent any
            steps {
                // Deploy the built artifacts
            }
        }
    }
}

In this example, the "Build" stage has three parallel stages, each running on a different node labeled as "node1", "node2", and "node3". The "Deploy" stage runs after the build is complete and runs on any available node.

To use this pipeline script, you will need to have the three nodes (node1, node2, and node3) configured in Jenkins. You will also need to ensure that the necessary build commands and dependencies are installed on each node.