So @Tracy Perry mentioned some monitoring program named Monitorix. I try to install Monitorix in my Debian PC, this PC is my server replica. The installation is smooth, using izzy APT. The problem is, I can't access Monitorix in 8080, because it always redirect to HTTPS. FYI, my site is running HTTPS (nginx). So, why, nginx, who is running in 80 and 443, is redirecting monitorix access in 8080 to https?