How to change chef-server's nginx configure

There are two ways to achieve this.

First is to use nginx's config file directly. chef-server's nginx config file is located under 

/var/opt/chef-server/nginx/etc/nginx.conf

After changing some settings, restart chef-server as below:

sudo chef-server-ctl restart

Second is to use chef-server.rb file instead of using nginx.conf file

This file is located under /etc/chef-server. If it doesn't exist, just create it. put some values you want in it as below:

nginx['ssl_port'] = 449

To see the more detailed information about this, visit the following link:

http://docs.opscode.com/config_rb_chef_server_optional_settings.html

After specifying some options, run the following commands to apply those.

sudo chef-server-ctl reconfigure  sudo chef-server-ctl restart