Jenkins: GitHub hook trigger for GITScm polling

Question

I try to configure Jenkins. I want a simple behavior: trigger a build on new pull request.

So, I created a job and configured it, but I checked the checkbox for:

And as you can see nothing is dropped down.

If I click the question mark on the right side, I see:

If jenkins will receive PUSH GitHub hook from repo defined in Git SCM section it will trigger Git SCM polling logic. So polling logic in fact belongs to Git SCM.

But where is the "Git SCM section"?

Answer 1

You need to configure the webhook on your GitHub repository. Then, on every commit push, Jenkins will be notified.

So, open your repository in the browser, then go to Settings > Webhooks and add a new one.

Then, enter the URL of your Jenkins instance followed by /github-webhook and select the other options depending on your needs:

Answer 2

I was also frustrated with this topic, this was needed for me to get job triggering working from GitHub MERGE:

• GitHub repo -> Settings -> Webhooks -> push type webhook with URL: http(s)://host:<port>/github-webhook/

  For me, last slash was REQUIRED, did not work without it

• In Jenkins System Settings, add GitHub Server, credential for it and [x] Manage hooks

• Use Test settings button to test it works

• In Job configuration, Source Code Management -> Git, add repo and credentials

• Under Build triggers: [x] GitHub hook trigger for GITScm polling

• In GitHub webhook settings, click webhook and it shows logs how it worked under "Recent Deliveries" title