Webhook from GitLab to Jenkins returns HTTP 404

0
votes

I'm trying to make it so my Jenkins job builds automatically when I push to a gitlab repository. For this, im using the 'GitLab Plugin' for Jenkins.

Here is what's working:

  • I can build the job manually.
  • Jenkins can access my GitLab project using an API key.

Here is the problem: I configured my Jenkins project and it gave me a URL to use with a GitLab webhook. I also use a secret token.

In GitLab, I add this webhook using the EXACT same url that the plugin gives me, and I add the secret token as well. I disable SSH. Upon testing, it returns HTTP 404 with the following message:

 Hook executed successfully but returned HTTP 404 <html> <head> <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/> <title>Error 404 Not Found</title> </head> <body><h2>HTTP ERROR 404 Not Found</h2> <table> <tr><th>URI:</th><td>/project/UnitTestFramework%20-%20Gaspar%20Tamas</td></tr> <tr><th>STATUS:</th><td>404</td></tr> <tr><th>MESSAGE:</th><td>Not Found</td></tr> <tr><th>SERVLET:</th><td>Stapler</td></tr> </table> <hr><a href="http://eclipse.org/jetty">Powered by Jetty:// 9.4.30.v20200611</a><hr/> </body> </html>

For reference the URL looks something like this:

http://jenkins.server.address.com:8282/project/My%20Project%20Name

with server name and project name replaced of course, whitespaces are escaped using %20. I don't see what could be wrong with this URL, as the GitLab plugin gives it to me, there can be no typo or anything.

1
jenkinscontinuous-integrationgitlab

1 Answers

1
votes

I found a solution myself browsing SO. It bypeasses the GitLab plugin entirely as I could not get that URL to work. See this answer, it worked for me.

If the link ever goes down here is the idea, use this webhook url:

http://(jenkins_user):(jenkins_api_token)@(jenkins_server_address):(port)/job/(job_name)/build?delay=0sec

Actually if you set up your Jenkins Job as the GitLab plugin suggests it, except you use this webhook instead of the one that the plugin gives, commit status will be updated in your GitLab anyways.