use backendrestart instead restart if no_socket_connect_to_server (other could_not_connect back to not use restart); set lxlighttpd config to server.max-keep-alive-requests = 0 and add server.max-fds = 2048; modified kloxo init.program for backendrestart; remove xinetd.smtp_lxa; fix php-fpm default.conf; add 'yum clean all' to make sure mysql-to-mariadb convert run perfectly