Occasionally Apache will crash on me, when our server is under a completely normal load. When I run /etc/init.d/httpd restart, this is the error I get (it fails on restart):
Stopping httpd: [FAILED]
Flushing IPC Semaphores [ OK ]
Starting httpd: (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
What causes this kind of error? It's totally bizarre to me and nothing has changed in our configuration; this error just started popping up when I try to restart Apache after it crashes.
Any ideas? Thanks in advanced. This place is very helpful!