"502 Bad Gateway" problem with EE3

Hi,

I installed EE 3.2.1 and I got random “502 Bad Gateway” error from Nginx. This is my server configuration: - Directadmin (custom build2 v. 1.50.0) - Apache web server with Nginx as reverse proxy. - PHP 5.5.34

I found this error message from Nginx log file:

2016/04/08 14:02:08 [error] 7639#0: *2264967 upstream prematurely closed connection while reading response header from upstream, client: X.X.X.X, server: XYZ.com, request: “GET /admin.php HTTP/1.1”, upstream: “http://Y.Y.Y.Y:8080/admin.php”, host: “www.XYZ.com”

Then I bypass Nginx reverse proxy by calling http://Y.Y.Y.Y:8080/admin.php directly and I got “The connection was reset” message from the browser. After that I restart Nginx and I still got “502 Bad Gateway” error. Next step I restart Apache and then problem gone!

So every time I got random “502 Bad Gateway” error I restart Apache and the problem gone. I also has an EE2 website on the same server and it’s running properly. Other websites has no problem as well.

Would you help me please?

Wp