Nagios also known as Nagios Core, can be defined as a free and open source computer software application which monitors systems, networks and infrastructure. One of the most important features of Nagios is that it provides monitoring and alerting services for servers, switches, applications and services. So basically it intimates the users when anything goes wrong and also informs them the very second the problem is resolved. Nagios was originally written as NetSaint and it was developed by Ethan Galstad along with a group of developers. Also, originally this software was designed in order to run only under Linux, but later it was noticed that Nagios was also compatible on other Unix variants.
This software is free and has been licensed as per the terms of GNU general public licence version 2, as stated by the free software Foundation. Nagios has the capability or enables any system to monitor an assortment of metrics on different VMware platforms. These VMware platforms comprise of vMware Workstation, ESX hosts, vSphere or vCenter Servers. Some of the benefits of implementing effective virtualization monitoring by using this software are as follows. One witnesses increase in server, services and application availability. In case of server and operating system failures, the issues are detected faster. Service and application failures are also brought to the notice immediately. Therefore less time is taken for deployment.
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