Linux

The kernel you have is not the one from the DVD. If you have updated via an online repository then you should just use yum to install it from that repository. Don't specify a version

Code:

yum install kernel-headers
yum install kernel-devel

You still don't have the required RPMs.

Hey Mark,

I finally did install Nagios 3.2.3 on CentOS release 5.7 (Final) with the default config files and added 1 host to it and it is sending "Service Alert: CentOS 5/HTTP is WARNING" frequently, how do you fix this one? what are the additional files that need to be added so that I can monitor the diskspace, desired processes, network interfaces, users, load, cpu usage etc. Are there any additional files that need to be edited?

Thanks
Saikrishna

At this point, you are no longer asking how to install Nagios, but how to use it. Perhaps a class or a book would be better. Implementing a monitoring system you know nothing about does you no good.

This a POC Mark and an entirely new build completely isolated from existing network and we have just the DEV machines at the moment, eventually we will get to SIT/STAGING & PROD I haven't built Nagios prior to this and need to know what are the files that need to be taken care of.

Thanks
Saikrishna

Hello Mark,

I have installed nagios and added 12 hosts as a start and monitoring few details on them, how do I send false alerts and check if they are being reported through nagios server?

Also, Nagios seems to be sending false alerts about few hosts, (ex: There were no users on one host and still Nagios was reporting a critical alert and says 6 users are logged in.

Thanks
Saikrishna

I can repeat myself, but I do not think that will do any good. Please go find a book on Nagios. I do not run Nagios. Your original question was regarding how to install an application.

Find more information on Nagios from their website or one of dozens of good books on amazon.

This tool is way too large and encompassing for you to come ask every possible question in this thread.