- FPM socket permissions need to be 660 also under Apache, otherwise you get the following error:

[Sun Jun 01 18:52:24 2014] [error] [client 146.52.61.243] (13)Permission denied: FastCGI: failed to connect to server "/var/www/clients/client1/web2/cgi-bin/php5-fcgi-1.2.3.4-80-example.de": connect() failed
[Sun Jun 01 18:52:24 2014] [error] [client 146.52.61.243] FastCGI: incomplete headers (0 bytes) received from server "/var/www/clients/client1/web2/cgi-bin/php5-fcgi-1.2.3.4-80-example.de"

Author: falkotimme

server/plugins-available/apache2_plugin.inc.php

@@ -2654,7 +2654,7 @@ private function php_fpm_pool_update ($data, $web_config, $pool_dir, $pool_name,
 
 		$fpm_socket = $socket_dir.$pool_name.'.sock';
 		$tpl->setVar('fpm_socket', $fpm_socket);
-		$tpl->setVar('fpm_listen_mode', '0600');
+		$tpl->setVar('fpm_listen_mode', '0660');
 
 		$tpl->setVar('fpm_pool', $pool_name);
 		$tpl->setVar('fpm_port', $web_config['php_fpm_start_port'] + $data['new']['domain_id'] - 1);