jenkins.

run jenkins

• get .war from https://jenkins.io/
• run: java -jar jenkins.war
• jenkins is reachable under: localhost:8080
• initial password can be found here: ~/.jenkins/secrets/initialAdminPassword
• jenkins default location: ~/.jenkins
• default user admin:admin

example pipeline

• this pipeline uses credentials and write it to a file: credentials.txt
• create a credentials under: http://localhost:8080/credentials/store/system/domain/_/newCredentials
  • in the example I used: jenkins_credential_0
• create a new job: http://localhost:8080/view/all/newJob

• paste pipeline code

  • based on: https://jenkins.io/doc/pipeline/examples/

    // This shows a simple example of how to archive the build output artifacts.
    node {
    stage "Create build output"
    // Make the output directory.
    sh "mkdir -p output"
    // Write an useful file, which is needed to be archived.
    writeFile file: "output/usefulfile.txt", text: "This file is useful, need to archive it."
    // Write an useless file, which is not needed to be archived.
    writeFile file: "output/uselessfile.md", text: "This file is useless, no need to archive it."
    writeFile file: "output/usefulfile.txt", text: "This file is useful, need to archive it."
    stage "credentials"
    withCredentials([usernamePassword(credentialsId: 'jenkins_credential_0', passwordVariable: 'bar', usernameVariable: 'foo')]) {
      writeFile file: "output/credentials.txt", text: bar
    }
    stage "Archive build output"
    // Archive the build output artifacts.
    archiveArtifacts artifacts: 'output/*.txt', excludes: 'output/*.md'
    stage "pwd"
    sh "ls -la ${pwd()}"    
    echo "done."
    }

jenkins with github

jenkins

• configure github under jenkins system configuration
• create a github token
• at jenkins job select the github repository

github

• under https://github.com/settings/developers > personal token you will see the token created by jenkins.