Nagios takeaway

Takeaway: Nagios enables the network administrator to keep a very close watch on all systems on the network no matter how many systems are on that network.
If you are a network or systemsadministrator, your primary goal is making sure those systems are up and running 24/7. To do this efficiently you need monitoring tools. If you are looking for a cost effective, flexible tool that also happensto be open source, then you might want to take a good look at one of the standard bearers for network monitoring in the open source community - Nagios.
Requirements

• Product: Nagios XI networkmonitoring tool
• Operating system: Linux (or UNIX variant)
• C compiler
• TCP/IP configured for the network
• License: GNU General Public License Version 2
• Initial cost: Free download
•Support: Support plans for the enterprise start at $2,495.
• Additional vendor information
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Who’s it for?
Nagios is relevant for any sized network. From SMB to Enterprise,Nagios can handle just about anything you have. But you will need a bit of patience, because, although Nagios is simple to install, making it really work for you can take some time and tweaking. Thereare configuration files to edit, plugins to add, and more.
What problem does it solve?
Nagios enables the network administrator to keep a very close watch on all systems on the network. But itdoesn’t just randomly watch anything and everything - Nagios only watches what you set it up to watch. And when something goes wrong, Nagios will alert you.
Standout features
• Incredible flexibility
•Easy installation
• Scalable
• Easy to navigate web-interface
• Plenty of plugins
• Alert system
• Event handlers help with problem remediation
• Capacity planning and trending
• Reporting systemWhat’s wrong?
The only issue Nagios has is that it does not auto-discover devices. You will have to configure each device you want to monitor by creating a configuration file for that device....