Setting github webhook on your repository to trigger an action in Jenkins

The following steps show how to trigger a build by using github webhooks in Jenkins. The rpre requirements here are :

• make sure jenkins in installed and git plugin is installed.
• git is installed .
• path of git.exe is valid in jenkins global tool configuration.

Please refer to my other articles if you have trouble in setting up the environment.

1. open jenkins and click on new item. This would take you to the screen as shown below:
   
2. Give a name and select freestyle project.Click Ok. 
3. This will redirect to another screen.Enter description of the job if needed or else move the source code management section.
4. Under source code management section select git and paste the git repository url as shown below:
   
5. Now if you move to next section you find build triggers , under that select GitHub hook trigger for GITScm polling.
6. Selecting this, if jenkins will receive PUSH GitHub hook from repo defined in Git SCM section it will trigger Git SCM polling logic.
7. Now we need to set up webhook on our repositpory. So go to the github repository mentioned above in the git scm section.
8. When we go to the repository, click on settings and then webhooks. Under webhooks click on add new webhook. The screen should look like this:
   
9. Here under the payload URL we need to mention the details of the jenkins service we are running inorder to receive the HTTP POST information from github.com
10. Here in my case I am running jenkins on my local machine, so I am providing the URL as below:
    
11. If you have a secret provided during jenkins installation you can add this here and there is also a flexibility to select on which event we want the webhook to trigger.

In this way, we can setup webhook and trigger build in Jenkins.