What is nagios monitoring tool in Linux?

Nagios, a Linux monitoring tool, renders complete monitoring of Linux operating systems and distributions including operating system metrics, service status, process status, file system utilization, and a lot more. While using Nagios to control a Linux environment, you’re using one of the several powerful Linux monitoring tools on the planet. Executing effective Linux monitoring tools with Nagios extends benefits such as; improved server, services, and application availability, secure detection of network outages and protocol breakdowns and so on.