httpd.itk: apr_sockaddr_info_get() failed for SERVER_NAME
httpd.itk: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName
(98)Address already in use: make_sock: could not bind to address [::]:81
(98)Address already in use: make_sock: could not bind to address 0.0.0.0:81
no listening sockets available, shutting down
Unable to open logs
[FAILED]

killall -9 httpd.itk

service httpds restart