Website monitoring tools?

Question

Monitoring

The question is very abstract: there is a small startup project with a volume of about a man-year, which uses the nginx web server. There is no monitoring.
I would like some simple solution for monitoring the main parameters: CPU, memory, IO, page generation time from the backend, DBMS, etc.
With the possibility of an alert when certain limits are exceeded.
What simple solution (with a target audience like startups worth less than a quarter of a million dollars) would you recommend?

Answer 1

Zabbix

Answer 2

In my opinion, the easiest website monitoring is: inspector-s.online