cje-prep/03-build-trigger-and-steps.md

Key CI/CD/Jenkins Concepts and their Usage

Configuring Build Triggers and Steps for a Job

1. Add a default value for the build parameter named MESSAGE e.g. Hello World!.
2. Create a build trigger that builds the project every minute.
3. Add a build step that executes the shell command echo 'Message: $MESSAGE'. The message is value of the parameter.
4. After a minute the first execution should have been triggered. Check the log output of the build and find the rendered message.
5. Create another freestyle project named downstream-job in the same folder.
6. Configure the initial job to execute the downstream-job if it was stable.

Show Solution

Modify the existing build parameter.

Add the cron build trigger and the build step.

The output render the interpolated value of the echo command.

Started by timer
Running as SYSTEM
Building in workspace /Users/bmuschko/.jenkins/workspace/freestyle/my-freestyle-job
[my-freestyle-job] $ /bin/sh -xe /var/folders/02/3dgzjkqj4kz0g7lnrk0w93c00000gn/T/jenkins3548490840940668236.sh
+ echo 'Message: Hello World!'
Message: Hello World!
Finished: SUCCESS

Create a new job in the same folder.

Configure the downstream job from the initial job.

The downstream job indicates the upstream job.