Nagios

Q: I have setup nagios to monitor my servers. However, I perform some regular daily maintenance on this server. I don’t want Nagios to send me any notification during this this daily regular downtime window. How can I achieve this? A: You can use any one of the method shown here to handle this situation. [...]

This article explains various command line options that are available for the nagios command. 1. Start Nagios Daemon Using nagios -d Typically you would execute “service nagios start” to start the Nagios daemon, which really calls the /etc/rc.d/init.d/nagios script. You’ll see the following line inside the /etc/rc.d/init.d/nagios script for the Nagios startup: $NagiosBin -d $NagiosCfgFile [...]

If you’ve installed nagios, and using it to monitor remote linux or windows server, you know that you can use the nagios web UI by going to the URL: http://{your-nagios-server-ip}/nagios/ Probably you’ve even defined appropriate nagios contacts, which will send a SMS messages to your cellphone about any critical issues. At work, when you are [...]

Question: When I execute check_nrpe command with some arguments, I get the message “CHECK_NRPE: Received 0 bytes from daemon. Check the remote server logs for error messages.”. How do I fix this issue? Answer: The issue is very straight forward. check_nrpe doesn’t take any arguments by default. You should enable the command line arguments for [...]

If you are a system administrator, or IT manager, or someone who is responsible for IT infrastructure, you should implement an enterprise level monitoring solution. The shell script you’ve written that does a ps -ef and sends you an email might do the basic job, but it doesn’t count as monitoring. If you want to [...]

Thanks for visiting this article from the Nagios newsletter. We’ll be posting several Nagios XI tutorials in the upcoming weeks. Subscribe to our articles and don’t miss any future Nagios XI step-by-step tutorials. Nagios Price: Nagios Core is free and open source. Nagios XI is $1,295 (to monitor unlimited number of hosts). This is perpetual [...]

Nagios is one of the best open source server and network monitoring solutions available.  Using the flexible nagios framework, you can monitor pretty much anything (including database and custom application). This article, using 4 simple steps, explains how to setup contact definitions who will get notification when a host or service has any issues.   [...]