Recently, I became aware that Apache’s access and error_log on a BlueOnyx 5107R server were both zero byte files. Restarting Apache to correct the issue resulted in the following error message:

(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

Fixing the issue was a simple matter of issuing the following commands:

killall -9 httpd
service httpd start

It seems that during logrotate, Apache was not able to get new file handles to write to the new log files.