After installing ea-nginx it may be necessary to alter the Nginx configuration to get things working as they did previously with Apache.
The following directory will contain the Nginx configuration for a site owned by a cPanel account, where ACCOUNT is replaced with the actual cPanel account username and DOMAIN is replaced with the site's domain or subdomain.
More information about ea-nginx can be found in this documentation. Note that Nginx is experimental at this time.
The Nginx documentation can be found here.