nginx error connect to php5-fpm.sock failed (13: Permission denied)

Question

I update nginx to 1.4.7 and php to 5.5.12, After that I got the 502 error. Before I update everything works fine.

Answer 1

If you have declarations

pid = /run/php-fpm.pid

and

listen = /run/php-fpm.pid

in different configuration files, then root will owner of this file.