If you were talking to someone whose organization is considering Nagios Core, what would you say?
How would you rate it and why? Any other tips or advice?
Definitely try it out if you have zero budget Even if you don't have a budget restriction please do give it a try
In terms of advice, I'd say that you need to know what the plan is and try to understand from which direction you are going to monitor. And, to understand what additional things you'll probably want to do from your side, like putting in scripts and other kinds of automation. So the planning is everything. If there is a particular tool you want to integrate with those things have to be properly planned beforehand. With the number of features that it has and the ease of integration, I would rate the solution somewhere close to nine out of ten.
I would rate Nagios Core as seven out of ten because it was hard to configure and the implementation process itself took about two weeks. Also, the UI is not friendly. Other products have features that aren't included in Nagios Core. I think that one was the easiest to restore. Also, Nagios supports only Linux, not A/UX. It can't be installed on the servers. If they supported all of these things, it would be much better.
There are thousands upon thousands of plugins. This is a winning product. Nothing can match the plugins, even I have contributed about six plugins.
We have the ability right now to see and create reports to tell whether or not we're meeting our SLAs on our production servers, through it. That is something that we wrote and implemented as a plug-in. I would rate this solution a nine out of 10 because it's relatively easy to implement and the cost is great, it's free. My advice would be, save yourself a lot of time - go get it and install it.