Setup a monitoring server to get alerts when hw/sw failure and wanted to define certain rules to monitor server activity. Also I wanted to get alerts when something get crashed or when sensitive files get modified. I know there are many tools in the market like nagios,nginix, netcool etc. But, I don't know how to start, I just gathered the requirements and looking for the step by step guide to begin.
closed as too broad by Rui F Ribeiro, Jeff Schaller♦, dr01, andcoz, Kusalananda♦ Jul 19 '18 at 8:00
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
I find Munin is pretty easy to use. Here is the install guide: http://guide.munin-monitoring.org/en/latest/tutorial/getting-started.html
You will find no step-by-step guide for you, every environment is different and there won't be a "Install Nagios for Kiron". But there is enough information to get you going in the copious amount of docs.