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

The following simple fix worked for me, bypassing possible permissions issues with the socket.

In your nginx config, set fastcgi_pass to:

fastcgi_pass   127.0.0.1:9000;

Instead of

fastcgi_pass   /var/run/php5-fpm.sock;

This must match the listen = parameter in /etc/php5/fpm/pool.d/www.conf, so also set this to:

listen = 127.0.0.1:9000;

Then restart php5-fpm and nginx

service php5-fpm restart

And

service nginx restart

For more info, see: https://wildlyinaccurate.com/solving-502-bad-gateway-with-nginx-php-fpm/