Jenkins job was poked by a GitHub webhook but didn't start

Question

I am running GHE 2.3.1 in private mode (anonymous cloning and repo browsing is not allowed in my organization) and we use Jenkins for CI. Before I put GHE into private mode I could have Jenkins fire jobs for repos when push events happen, using webhooks. After I set private mode this no longer happens.

In Jenkins I see that the webhook was received but the job didn't start.

Sep 23, 2015 4:13:35 PM INFO org.jenkinsci.plugins.github.webhook.subscriber.DefaultPushGHEventSubscriber onEvent
Received POST for http://github.company.com/org/repo
Sep 23, 2015 4:13:35 PM INFO org.jenkinsci.plugins.github.webhook.subscriber.DefaultPushGHEventSubscriber$1 run
Poked Job Name - build master

My job has no history of starting and failing. This is true for all jobs relying on push hooks. However, my jobs that run on pull request hooks are working, so I'm not sure what's wrong.

Any ideas?

Answer 1

Turns out there was an error in the GitHub Hook log that pointed me to the version of Git installed on the Jenkins master server. After updating it to the newest version the error went away and jobs started to build on hooks again.