Is there a way to change the Jenkins build number while building a job

Question

I am using Jenkins and Gradle to build my java project.

Every time I build my project, I get a new build number on the Jenkins screen.

The following is my Jenkins build info:

Success > Console Output  #96   03-Jan-2014 15:35:08   
Success > Console Output  #95   03-Jan-2014 15:27:29    
Failed > Console Output  #94    03-Jan-2014 15:26:16    
Failed > Console Output  #93    03-Jan-2014 15:25:01    
Failed > Console Output  #92    03-Jan-2014 15:23:50    
Success > Console Output  #91   03-Jan-2014 12:42:32   
Success > Console Output  #90   03-Jan-2014 12:02:45

I want to reset the Jenkins build number like:

Success > Console Output  #1    03-Jan-2014 12:02:45

Answer 1

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

Jenkins.instance.getItemByFullName("YourJobName").updateNextBuildNumber(1)

Comments

This not working for me. On the script console i didnt find any result after the execution. I am running this on my multibranch job

Jenkins.instance.getItemByFullName("Repo/branch").updateNextBuildNumber(1)

---

You can use the Next Build Number Plugin if the above doesn't work. Using the plugin is very simple and direct. Replace 47 with 1 in your case.

Answer 2

First of all you’ll need access to the script console which is in (Manage Jenkins -> Script Console).

 Then just run this command:

item = Jenkins.instance.getItemByFullName("your-job-name-here")
//THIS WILL REMOVE ALL BUILD HISTORY
item.builds.each() { build ->
  build.delete()
}
item.updateNextBuildNumber(1)

Answer 3

You can use the Next Build Number Plugin. It's not required, there are other ways of doing this as mentioned by @atul. This is just another method.

This is a simple plugin that changes the next build number Jenkins will use for a job.
This plugin is typically useful if you are using the build number as part of a version string, and:

• You do a build outside of Jenkins and you want to skip that number for the next build to avoid duplicate version numbers or failures.
• You created a new job to handle an existing process and want it to continue from where the old one left off.

Answer 4

Under the job workspace folder:

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

You'll find a file named nextBuildNumber. Set the build number in the file and reload the configuration from the disk. This will force the next build to start with the configured build number.

Comments

Another way, without having to go to the machine itself neither do file changes manually (please avoid it),

open the /script console and execute something like below

Jenkins.instance.getItemByFullName("<Full project name>").updateNextBuildNumber(5)