nginx reverse proxy for jenkins returning a 404

Question

I have a vanilla installation of nginx on Ubuntu 14.04 and I am trying to run a reverse proxy in front of a Jenkins installation (running on port 8080 as bellow).

I created a conf file to be included in the default configuration and it's picking the new location fine, but it returns a 404 instead of serving the content of the application.

What am I missing? It looks exactly as in the nginx admin guide.

# /etc/nginx/conf.d/reverse_proxy.conf

server {
  listen 80 default_server;
  server_name this_server_name;

  location /jenkins {
    proxy_pass http://localhost:8080;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
  }
}

ps (Edit): The 404 is being returned by Jenkins, not nginx.

Considering your PS, shouldn't you be posting your Jenkins configuration and not your nginx configuration? — muru
– muru, Commented Oct 24, 2014 at 3:17
Please rephrase your Q and try and explain the actual problem since it seems to stem from Jenkins and has nothing to do with Nginx. — slm
– slm ♦, Commented Oct 24, 2014 at 10:46
Jenkins was install from apt-get. No other configuration was performed on it. If I go to the server on port 8080 I get the Jenkins application running correctly. But, if I go via the reverse proxy that I am trying to setup it returns a 404. — Pablo
– Pablo, Commented Oct 24, 2014 at 11:34

nmquyet · Accepted Answer · 2014-10-26 20:57:16Z

Change your Nginx config

location /jenkins {
    proxy_pass http://localhost:8080/jenkins;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
}

Then, reconfigure your jenkins server to accept request with /jenkins by change JENKINS_ARGS in /etc/default/jenkins to something like this

JENKINS_ARGS="--webroot=/var/cache/jenkins/war --httpPort=$HTTP_PORT --ajp13Port=$AJP_PORT --prefix=/jenkins"

You can find details guide at

https://www.yauh.de/set-up-nginx-as-a-reverse-proxy-for-jira-and-jenkins/#usingnginxasaproxy

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