
We use nagios to monitor our 1000+ server farms and it works great for individual services on each server. Review collected by and hosted on G2.com.
I just find that the alert sound is horrible Review collected by and hosted on G2.com.

We use nagios to monitor our 1000+ server farms and it works great for individual services on each server. Review collected by and hosted on G2.com.
I just find that the alert sound is horrible Review collected by and hosted on G2.com.
Very nice product for quick checks, easy to configure from server and client side, Open source..which can be a double edged sword, but at least you have options. Nagios operates well in large environments. Nagios websit ehas most basics thoroughly documented for reference. Review collected by and hosted on G2.com.
All of the false positive alerts are annoying and time consuming to sift through from a technical support/help desk standpoint. It's a reat tool but considering how many years it has been existing it barely evolved. By default every alert triggers a notification. it also does not support plotting graphs of the monitored values. Review collected by and hosted on G2.com.

Great application for monitoring. Allows for things to get fixed in a timely manner Review collected by and hosted on G2.com.
The actual look of the page is plain and there is a lot of redundancy. Review collected by and hosted on G2.com.
Easy to set up, build simple checks, etc. Review collected by and hosted on G2.com.
Stick to the best practices. Don't go crazy with customization. Review collected by and hosted on G2.com.
Overall the price factor but I really like that we can setup services to ping devices all around our office, not just networking equipment. Review collected by and hosted on G2.com.
The learning curve is a bit steep but easiest thing to do is build an EC2 instance and dev it from there via terminal Review collected by and hosted on G2.com.

I like the reliability. It has never failed us to get alerts. Review collected by and hosted on G2.com.
It needs tweaking. You'd have to be very specific and make sure to tweak it to avoid false alarms Review collected by and hosted on G2.com.
Nagios has changed the way we do business in the sense that we are now more aware of our capacity than ever and are able to provide our customers with a next level service that has only improved as we continue to use nagios. Review collected by and hosted on G2.com.
Configuring the product can be difficult and outlining information in alerts can also be just as difficult not only for creation, but also review. Review collected by and hosted on G2.com.

GUI is awesome
opensource
free
ACK integration with Pagerduty
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not scalable
lots of configuration
hard to understand
not accurate
nagios host itself freeze up and then all other host show down and give false alram Review collected by and hosted on G2.com.
Malleability is Nagios' true strongpoint. I have seen it used in 3 fairly different environments. I've used 3 different frontends, currently using 2, to interact with the nagios backbone. Each having their own strengths and weaknesses respectively. When it comes to interacting directly with it via the CLI, while not the nicest to look at or work with, it does exactly what you tell it to. Review collected by and hosted on G2.com.
Directly editing configurations can sometimes be a bit of a process due to having to dig through the files in the terminal. You get out what you put in, and for most people the quality of their nagios experience will have to do with what front-end they end up putting in. Review collected by and hosted on G2.com.
It monitors everything we threw at it. It can even tie into pagers (yes, old style beepers) to deliver notifications. Down time and maintenance notifications are easy to use. The add ons really make this product shine -- with the help of free libraries of addons and plugins online there is very little that can't be monitored by this software. Plus, the price is right! Review collected by and hosted on G2.com.
It can be a little clunky to configure -- manually editing text files in a CLI isn't exactly my idea of a great time. There are GUI plugins available, but I have yet to find one that works as well as simply editing the config files. Review collected by and hosted on G2.com.