Why do I need and how do I connect Nagios to the server?
What is Nagios?
Nagios is a monitoring service for computer and server systems and networks, services, etc. Nowadays, networks and systems are becoming more and more complex, which makes it difficult for even the best system administrator to work. And that's exactly what tools like Nagios are for, which is a very powerful monitoring tool.
However, even to work with such a tool, an administrator will need a sufficiently deep understanding of working in his niche. This is due to the fact that Nagios will not be able to teach the administrator how to work with his own systems and networks, but if the user understands what he is doing, then this tool will be very useful in the work and will facilitate it.
Who needs it?
This tool will be useful for system administrators. Since it has a lot of functionality for tracking information about the server, for example, you can use it to find out the load on components or on the network. However, you will learn more about all the benefits below.
Nagios Functionality
Since the functionality of this tool is quite extensive, it will not be possible to specify all its features. But we will point out a few very important ones
- Notification during system failure
You can configure a specific way by which Nagios will notify you if something has stopped working. For example, you can use email or SMS. - Continuous monitoring of the system and services
The system is constantly monitored, whether it is day or night. - Collecting information
Once in a while (configurable parameter) Nagios collects information and writes it to its files. Thanks to this, in the future, the administrator will be able to find out when a failure occurred, etc - Report generation
Generates reports on time when the server is completely unresponsive - Plugins
There are plugins that extend the functionality of this framework.
These are very important aspects that will be very useful for any system administrator.
Advantages
In addition to what we indicated above in the functionality section, Nagios has many other advantages. For example:
- Easily scaled
- Constantly improving
- Has a large community of specialists
- Works on different OS
- It can track almost everything, be it servers with databases or a host
Installation method
In order to make it easier for you, the installation method was filmed on a video that was posted on our YouTube channel.
Conclusion
Nagios is a very powerful tool that not only allows you to monitor the status of systems and services, but also collects information, sends notifications when the system crashes, etc. This tool can be useful to any system administrator, but the main thing is that you, as a specialist, understand your networks and systems.