HELP PLEASEEE!!!

[mkhan1991]

Hello reader,

Looking to monitor a few Linux based newly built servers. My company has Nagios Core, and it is my first time doing this and I'm not sure where to begin. How do I go by installing nagios on those servers? and how do I start monitoring them? All the help is greatly appreciated.

Thanks & Regards,
M.Khan

[dwhitfield]

Nagios doesn't need to be installed on the servers you are monitoring. You'll need some sort of agent on the servers, or will need to enable SNMP.

You will likely find the following two links helpful:
https://assets.nagios.com/downloads/nag ... linux.html should be helpful.
https://www.nagios.com/solutions/linux-monitoring/

In case you run into issues...what version of Core do you plan to use? Do you plan to compile it from source or install from distro repos? On what OS/version is nagios running? cat /etc/*-release may be of use. Also, how large is your setup? That will help determine the resources your Core server needs.

[mkhan1991]

Thanks for taking out the time to reply. I really really appreciate it.
The version that we have is 3.4.1. Looking to install it RHEL 6.6.

So here's my dilemma...We have about 300 servers, roughly, that are currently being monitored under Nagios. And now, we have a few newly built linux based hosts that need to be added to Nagios as well to monitor CPU, Memory, and Disk. I was under the impression that it would a simple "click and go" sort of a thing, but I was wrong. So you think if I follow those links I should be able to get this done?

[dwhitfield]

3.4.1 is super old. If you don't already have it installed, I'd suggest 4.2.4: https://assets.nagios.com/downloads/nag ... 2.4.tar.gz

4.2.4 isn't going to be plug-and-play either, but at least you'll have the latest features. The strength of Nagios is its flexibility, but to be flexible we can't make many assumptions.

With 300 servers, those two links are likely not going to be enough. You'll need some sort of automation tool. Depending on what your administration skillset is, https://support.nagios.com/kb/article.php?id=454 may be of use. It's not as if you couldn't use chef, bash, ansible, whatever, it's just that we have a presentation on puppet.

[mkhan1991]

I'm sorry for not being clear enough..when I said 300 servers, I meant to say that those 300 servers currently have Nagios running on them and are being monitored. I have maybe 4 or 5 servers, that are newly built, that I need to add to Nagios so that we can start monitoring them before they go live in about a week. I've been googling stuff as well, but I just can't come across anything that shows how to install and configure Nagios core 3.4.1.

[dwhitfield]

Well, 4 or 5 you can certainly do by hand. There's a ton of documentation at https://assets.nagios.com/downloads/nag ... n/toc.html

That said, the most helpful things for you to read will likely be the two following:
https://assets.nagios.com/downloads/nag ... .html#nrpe
https://assets.nagios.com/downloads/nag ... vices.html