Icinga is an open source network monitoring platform. It includes automation, modularized integration packages, and prebuilt alerts and reporting capabilities.
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Nagios Core
Score 8.6 out of 10
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Nagios provides monitoring of all mission-critical infrastructure components. Multiple APIs and community-build add-ons enable integration and monitoring with in-house and third-party applications for optimized scaling.
If you're running bare-metal in a datacenter and your hosts are fairly static, it's probably okay to use something like Icinga to monitor your systems. In general, I would not recommend using any monitoring software based on Nagios (Icinga is a fork of Nagios) due to the outdated concepts inherent in those systems. There are a number of good SaaS monitoring solutions which are superior and several open source projects which implement an automation-centric approach to monitoring
Nagios is simply a very configurable and rock solid monitoring engine. For these reasons I would recommend it to any IT professional in any medium to large organization where creating custom checks and programming ones custom needs into the configuration is practical. I would be more hesitant to recommend it as a first monitoring solution for a small business which is usually accompanied by a less experienced and/or more time constrained admin.
I think Icinga has a great search feature. I can always search for the hosts, host groups, or check names. When using just regular Nagios, I don't recall being able to do this search.
The fact that I can use Active Directory or LDAP for logins is a great feature.
If you are familiar with Nagios, it's very simple to combine the two products to get a polished finished product.
It's built by engineers for engineers so setting it up and configuring it is relatively complicated. It could really use a simplified configuration approach, or a GUI to set it up instead of editing config files.
I'd like to see the option to have service notification settings inherited from the host setting notifications. They have to be set up separately but they are often the same, so it would be nice to have less redundancy.
Icinga is a solid solution which does everything it promises. It is backwards compatible with most Nagios instances, making the transition very easy. Once you get the hang of installing new plugins and editing configuration files expanding its monitoring capabilities are easy.
We're currently looking to combine a bunch of our network montioring solutions into a single platform. Running multiple unique solutions for monitoring, data collection, compliance reporting etc has become a lot to manage.
The Nagios UI is in need of a complete overhaul. Nice graphics and trendy fonts are easy on the eyes, but the menu system is dated, the lack of built in graphing support is confusing, and the learning curve for a new user is too steep.
I haven't had to use support very often, but when I have, it has been effective in helping to accomplish our goals. Since Nagios has been very popular for a long time, there is also a very large user base from which to learn from and help you get your questions answered.
Icinga was initially a fork of Nagios. Over time, the configuration language was replaced with something more programmatic. This configuration language is one of the big sellers of this product. It allows flexible, quick configuration of large sets of hosts and services with minimal input. Comparing it to other products like WhatsUp Gold, Zenoss, Zabbix, etc., it stands out as incredibly flexible. Adding additional features to Icinga can be as simple as searching for them online. And if they don't yet exist, there is a full API available for custom extensions.
We have tested several other monitoring products which were able to monitor the basic matrix (Memory, DiskUsage, CPU%, UpTime, Running Service Status, Port 80 Up/Down). Although some offered far better UIs, they lacked the ability to monitor ANYTHING. Zabbix, being the only contender worthy of competing, is a good alternative to Nagios. We also tried Zenoss Core & OpenNMS which were good enough for non-Linux engineers to get started with. OP5 was another service-oriented monitoring solution we evaluated. Apart from Nagios, Consul is heavily used to monitor & register the micro-service systems & end-point URLs. Due to the time invested (9+years) in Nagios, we were able to get more components installed/configured easily than alternatives.
With it being a free tool, there is no cost associated with it, so it's very valuable to an organization to get something that is so great and widely used for free.
You can set up as many alerts as you want without incurring any fees.
