You may get CRITICAL error "Connection refused by host" on Nagios monitoring tool after installed and configured Nagios in client system.

Unfortunately, the apache server has been stopped in server or could not start up again check in your apache error log with tail command,

Few websites are available to check Internet Speed and also its possible can check on Linux based system with a single command,

Yum command are install or upgrade latest version, you may get this error while installing or update packages using yum command

yum update command use for install and upgrade all of system software with latest version, it will check all configured repositries and resolve automatically

I am getting below error when starting the xampp in linux system, Internal error: Error retrieving pid file logs/httpd.pid Remove it before continuing if it is corrupted

If you want to increase ram space for red5 server in Linux just follow below steps. The Red 5 server installed location