Проблема с memcache в ОС Linux CentOS 5.x:
PHP Notice: Memcache::connect() [<a href='function.Memcache-connect'>function.Memcache-connect</a>]: Server 127.0.0.1 (tcp 11211) failed with: Permission denied (13) in memtest.php on line 3
PHP Warning: Memcache::connect() [<a href='function.Memcache-connect'>function.Memcache-connect</a>]: Can't connect to 127.0.0.1:11211, Permission denied (13) in memtest.php on line 3
Для решения проблемы необходимо запустить:
setsebool -P httpd_can_network_connect on