Use socket between php-cgi and nginx fastcgi_pass

discuz.conf

@@ -24,7 +24,7 @@ server {
     location ~ \.php$ {
         include fastcgi_params;
         fastcgi_index index.php;
-        fastcgi_pass  127.0.0.1:9000;
+        fastcgi_pass  unix:/dev/shm/php-cgi.sock;
         fastcgi_buffer_size 128k;
         fastcgi_buffers 4 256k;
         fastcgi_busy_buffers_size 256k;

php-fpm.conf

@@ -161,7 +161,7 @@ group = www-data
 ;                            (IPv6 and IPv4-mapped) on a specific port;
 ;   '/path/to/unix/socket' - to listen on a unix socket.
 ; Note: This value is mandatory.
-listen = 127.0.0.1:9000
+listen = /dev/shm/php-cgi.sock
 
 ; Set listen(2) backlog.
 ; Default Value: 65535 (-1 on FreeBSD and OpenBSD)
@@ -172,9 +172,9 @@ listen = 127.0.0.1:9000
 ; BSD-derived systems allow connections regardless of permissions. 
 ; Default Values: user and group are set as the running user
 ;                 mode is set to 0660
-;listen.owner = nginx
-;listen.group = www-data
-;listen.mode = 0660
+listen.owner = nginx
+listen.group = www-data
+listen.mode = 0660
 ; When POSIX Access Control Lists are supported you can set them using
 ; these options, value is a comma separated list of user/group names.
 ; When set, listen.owner and listen.group are ignored