Issue

• When a new GitHub Organization job is created, all repos are scanned and builds are triggered right away. Is there any way to prevent these automatic builds?
• I want to control whether a stage should be executed or not based on the triggered events.

Environment

• CloudBees Core
• CloudBees Core on modern cloud platforms - Managed Master
• CloudBees Core on traditional platforms - Client Master
• CloudBees Jenkins Enterprise
• CloudBees Jenkins Enterprise - Managed Master
• CloudBees Jenkins Platform - Client Master
• CloudBees Jenkins Distribution
• Jenkins LTS

Resolution

The best way is to install Branch API 2.3.0 and Basic Branch Build Strategies 1.3.0. A new option is added to skip initial build on branch indexing:

If you can’t install the plugins for some reason, go to the GitHub Org configuration, clear the field Branch names to build automatically.

After saving the job, you can add .* to re-enable builds.

Workaround

You can also control when a stage should be executed. In the following example, the deployment stage is skipped unless the build is triggered by a Github push event.

pipeline {
    agent none
    stages {
        stage('Example Build') {
            steps {
                echo 'Hello World'
            }
        }
        stage('Example Deploy') {
            when {
                expression {
                    currentBuild.buildCauses.toString().contains("Push event to branch")
                }
            }
            steps {
                echo 'Deploying'
            }
        }
    }
}

Tested product/plugin versions

• Managed Master 2.150.2.3
• Branch API 2.3.0
• Basic Branch Build Strategies 1.3.0
• GitHub Branch Source 2.4.1

References

• Using When directive