Proxy error when accessing jenkins

Question

When i access jenkins i get this error-

Proxy Error

The proxy server received an invalid response from an upstream server. The proxy server could not handle the request GET /.

Reason: Error reading from remote server

i tried the init script to restart jenkins but it fails saying 8080 is already in use. I changed the jenkins default port but i still get the above error. any pointers on how to solve this?

Answer 1

Easiest thing: Stop the web server on which you are running jenkins. Run netstat -a.
Is port 8080 in use? If it is, you will need to change the port of the web server to something other than 8080. (9090 is easy to remember).

If 8080 is in use, you should have received an error when you tried to start up the web server. Check the log for the web server.

Incidentally, did you really mean you changed the jenkins default port? Or is this the default port of the web server to which jenkins is running?