Nagios Core Review

It prevents disasters long before they can take place


What is our primary use case?

We use Nagios to monitor hundreds of CentOS cloud servers (and a few Legacy Windows servers). Nagios is monitoring well over 5000 service endpoints. Some plugins were handwritten in PHP, Perl, Python, Java and Bash.

How has it helped my organization?

It has made the life of the network operations staff more proactive in managing the resources of the infrastructure. It prevents disasters long before they can take place.

What is most valuable?

  • Historical Alert records/data
  • Plugins
  • Data sources (MySQL)
  • Grouping of services and servers

We use the Alerting and Graphing to minimize the downtime. The old RRD Graph module is now used by Grafana. We outgrew the old PNP4Nagios a few weeks back. 

What needs improvement?

The GUI of the Core is still a long way off, but the features are 100 percent above average. It would be great to see better UI themes which could be configured by Netadmin or instructions that help combine graphs and Nagios.

For how long have I used the solution?

More than five years.

What do I think about the stability of the solution?

I have never had stability issues. Nagios has been stable for over 10 years. Although, we never left it running for more than two weeks without uploading new services, plugins, and threshold changes, then restarting it..

What do I think about the scalability of the solution?

No scalability issues, though it is a bit slow due to latency. However, after tweaking the Nagios and off-loading the graphing to NPCD, I was able to scale the Nagios to more than 5000 services checks with 0.5s latency.

How is customer service and technical support?

The end-users love quick alerting and Grafana dashboards.

Which solutions did we use previously?

We did not previously use a different solution. Nagios was the first solution that we started using 10 years ago.

How was the initial setup?

Since its Nagios, it is a bit time consuming, but worth the effort. It took a few hours setting up the entire environment, including RRD, PHP, Apache, Nagios, PNP4Nagios, Perl, Python, OpenSSL, etc.

What about the implementation team?

We did an in-house installation.

What was our ROI?

We have saved a lot of time, money, and effort in reducing disaster times, which is owed to Nagios quick alerting.

What's my experience with pricing, setup cost, and licensing?

The Nagios Core (PNP4Nagios + Core) is free and can be setup by Netadmin within a few hours. The only additional cost is the cloud server. 

Which other solutions did I evaluate?

10 years ago, there were not too many options.

What other advice do I have?

There are thousands upon thousands of plugins. This is a winning product. Nothing can match the plugins, even I have contributed about six plugins.

Disclosure: I am a real user, and this review is based on my own experience and opinions.
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