Posts etiquetados ‘control master’

Using SSH Control Master for efficient monitoring of remote hosts in Nagios

Publicado: abril 13, 2010 en linux/unix, monitoring, nagios, script, sysadmin
Etiquetas:, , , , , , , , , ,
1

I want to use SSH to remotelly monitor some hosts. The problem with ssh is the overhead related to the creation of new connections.

But we can use the functionality of Control Master from OpenSSH (seehttp://www.revsys.com/writings/quicktips/ssh-faster-connections.html). Using it, ssh will connect only once reusing the connection.

This is great for monitoring scripts.

To use Control Master, you have to execute something like:

ssh -o "ControlMaster=yes" -o "ControlPath=/somepath/ssh-%r@%h:%p" -N user@host

The idea: create a remote user in each monitored host, stablish persistent ssh connection and use Control Master for the monitoring scripts. To deamonize and control the ssh master connections, I will use runit

(más…)