I have two problems : Upgrading mysql and configurating my custom 404.html page. I wanted to install an admin page, but need to the consistency of mysql and php version, so I wanted upgrade mysql as the same version as PHP, and I had the following result: Nginx failure and impossible to use port 81. My website stop to work. I set Nginx on port 81 because I could not connect my VPS on Intby xning9 - Nginx Mailing List - English