Nagios Core Reviews

We like the automatic alerting functions. Also, there are a lot of free monitoring modules available for any purpose you may need.

We've got a medium size distributed system with a lot of locally installed machines, and Nagios provides us with a solid and reliable monitoring solution for these machines.

They should simplify the features so it becomes easier to setup out of the box.

I've been using it for about five years.

There have been no performance issues.

It's been able to scale for our needs.

Nagios was our first solution. At the time, we read that Nagios was the industry standard solution, so we chose it.

It is a complex software with many-many features, so the setup not an easy task.

We did it in-house.

We are using the free version.

The free version is good enough for most people, but it is somewhat hard to make it a working solution.

Open source and very flexible. large ecosystem of tools and custom monitors built up around nagios. All configuration is text files, so it is easy to keep this in version control and generate new configs from other tools.

Default interface is clunky and slow. Can be a steep learning curve if you haven't worked with it before. Adding devices or services requires reloading the config or restarting the service. Would like for this to be more dynamic. It seems that most of the new development is going towards Nagios XI(paid enterprise version) rather than the opensource nagios. Would like to see some of the newer ideas in Icinga and/or MK livestaus integrated into opensource nagios.