How to Send Event from Github to Jenkins Hosted in Private VPN

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1

Jenkins setup:

jenkins is setup on GKE and exposed using nginx ingress
Accessible using VPN
Issue - Trying to send event to Jenkins from Github, but showing unable to reach to host

Any solution we can used instead of publicly exposed jenkins..

Regards,

Gaurav Tayade

2

Somehow you need something that is exposed to the internet so that github can send events there. You could setup a small service exposed to the internet that only accepts requests from github (I assume that is a known list of IPs) on a dedicated port and forwards that to your Jenkins inside your VPN

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Hello and welcome to this community, @tayadegaurav11! :waving_hand:

If you want to receive GitHub webhooks without exposing Jenkins to the public internet, there are a few options worth considering:

  • Use GitHub Actions as a proxy:
    You could have a small workflow that runs on GitHub’s side and triggers Jenkins builds via its API over VPN or through a secure tunnel.
  • Set up a webhook relay/tunnel:
    Tools like Webhook Relay or ngrok can securely forward incoming webhooks to your private Jenkins endpoint without opening it to the internet.
  • Run a self-hosted GitHub runner inside your network:
    This runner could receive GitHub events and then trigger Jenkins jobs internally, without needing any public ingress.
  • Fallback: Polling SCM in Jenkins:
    Not real-time, but Jenkins can periodically poll GitHub for changes if webhooks aren’t an option. :person_shrugging:

In practice, the most common and lightweight approach is to expose just the webhook endpoint via a secure tunnel (like ngrok) or a relay service. If you go this route, it’s a good idea to restrict access, so only the webhook endpoint is exposed, not the whole Jenkins controller.