Changing Jenkins build number

Question

If you have access to the script console (Manage Jenkins -> Script Console), then you can do this following:

Jenkins.instance.getItemByFullName("YourJobName").updateNextBuildNumber(45)

can be done with the plugin: https://wiki.jenkins-ci.org/display/JENKINS/Next+Build+Number+Plugin

more info: http://www.alexlea.me/2010/10/howto-set-hudson-next-build-number.html

if you don't like the plugin:

If you want to change build number via nextBuildNumber file you should "Reload Configuration from Disk" from "Manage Jenkins" page.

Under the job workspace folder, like:

C:\Program Files (x86)\Jenkins\jobs\job_name

there is a file named nextBuildNumber.

Setting the build number in the file and reloading the configuration from disk (Manage Jenkins menu) will force the next build you start to have the value from the file as BUILD_NUMBER.

If you have branch name including Forward Slash (using git flow for example), you will need to replace the Forward Slash with its Unicode character %2F within the branch name.

Here is an example for the pipeline My-Pipeline-Name and the branch release/my-release-branch-name

Jenkins.instance.getItemByFullName("My-Pipeline-Name/release%2Fmy-release-branch-name").updateNextBuildNumber(BUILD_NUMBER)

I was able to find out about this by running the following command which will list the different jobs (branches) for your pipeline

Jenkins.instance.getItem("My-Pipeline-Name").getAllJobs()

Hope it helps.

Perhaps a combination of these plugins may come in handy:

• Parametrized build plugin - define some variable which holds your build number
• Version number plugin - use the variable to change the build number
• Build name setter plugin - use the variable to change the build number