At the end of this lesson you will be able to connect to your Jenkins instance from a web browser. This web request passes through the nginx reverse web proxy we setup in a previous lesson.

On Master, edit the existing nginx configuration file for master:

sudo vi /etc/nginx/sites-available/master

Building on our existing nginx configuration, we include configuration options for Jenkins below the gogs configuration stanza, save and close:

    location ^~ /jenkins/ {
        proxy_pass http://localhost:8080/jenkins/;
 
        # The following settings from https://wiki.jenkins-ci.org/display/JENKINS/Running+Hudson+behind+Nginx
        sendfile off;
 
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
        proxy_max_temp_file_size 0;
 
        #this is the maximum upload size
        client_max_body_size       10m;
        client_body_buffer_size    128k;
 
        proxy_connect_timeout      90;
        proxy_send_timeout         90;
        proxy_read_timeout         90;
 
        proxy_buffer_size          4k;
        proxy_buffers              4 32k;
        proxy_busy_buffers_size    64k;
        proxy_temp_file_write_size 64k;
    }

The full nginx configuration file /etc/nginx/sites-available/master should look like this:

master

server {
    listen 80;
    server_name master;
 
    location /gogs/ {
        proxy_pass http://localhost:3000/;
    }
 
    location ^~ /jenkins/ {
        proxy_pass http://localhost:8080/jenkins/;
 
        # The following settings from https://wiki.jenkins-ci.org/display/JENKINS/Running+Hudson+behind+Nginx
        sendfile off;
 
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
        proxy_max_temp_file_size 0;
 
        #this is the maximum upload size
        client_max_body_size       10m;
        client_body_buffer_size    128k;
 
        proxy_connect_timeout      90;
        proxy_send_timeout         90;
        proxy_read_timeout         90;
 
        proxy_buffer_size          4k;
        proxy_buffers              4 32k;
        proxy_busy_buffers_size    64k;
        proxy_temp_file_write_size 64k;
    }
 
}

The master site configuration is already enabled so all we need to do is restart the nginx service:

sudo service nginx restart

Now visit http://master/jenkins/ to access the Jenkins CI service through the reverse proxy.

• Jenkins - behind nginx reverse-proxy