Nginx Configuration for Jenkins

nginx.conf

upstream jenkins {
  server 127.0.0.1:8080 fail_timeout=0;
}

server {
        listen 80 default_server;
        listen [::]:80 default_server;

        root /var/www/html;
        index index.html index.htm index.nginx-debian.html;

        server_name jenkins.example.com;

        location / {
                proxy_set_header        Host $host:$server_port;
                proxy_set_header        X-Real-IP $remote_addr;
                proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header        X-Forwarded-Proto $scheme; 
                proxy_set_header        Upgrade $http_upgrade;
                proxy_set_header        Connection "upgrade";
                proxy_pass              http://jenkins;
        }
}