Final answer:
To delete build history in Jenkins, go to the job page, use the 'Build History' section to delete individual builds, or manually remove them from the file system at JENKINS_HOME through the server. Deleting build history is irreversible and should be done carefully.
Step-by-step explanation:
To delete build history in Jenkins, you would typically need to follow these steps:
- Navigate to the job or project within Jenkins that you want to clear the history for.
- Click on the 'Build History' section on the sidebar of the job page.
- Find the individual build you want to delete. Click the 'x' button or the delete option directly from the build history list (if available).
- If you need to delete the entire build history, this is not available through the Jenkins GUI and requires you to go to the job's workspace on the Jenkins server. Once there, you can manually delete the builds from the appropriate build directory.
- Alternatively, you can use script console or perform a direct file system operation on the Jenkins server file system where Jenkins stores build data (typically JENKINS_HOME/jobs/{job_name}/builds).
- After the deletion, you may need to restart Jenkins or clear its cache to reflect the changes in the UI.
It's important to remember that deleting builds can affect historical data and should be done with caution, as this action is irreversible. It is also good practice to have a backup of important data before performing such operations. If you are unsure or do not have access to the server files, you might need to seek help from a Jenkins administrator or someone with the necessary server privileges.