root@server3:~# killall apache2 apache2: no process found root@server3:~# /etc/init.d/apache2 start * Starting web server apache2 [Sun Mar 02 10:38:37 2014] [warn] NameVirtualHost *:80 has no VirtualHosts (98)Address already in use: make_sock: could not bind to address [::]:80 (98)Address already in use: make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down Unable to open logs Action 'start' failed. The Apache error log may have more information. [fail] I'm using Ubuntu 12.04 LTS. What can it be? There apache processes, and also can not give start it.