Monitoring host and vm

[lxiosjao]

Hi,

I would like to know how do you monitore your host (Proxmox VE) ?
Is it possible to have notification when :
- S.M.A.R.T check HDD failed
- Virtual Disk of VM are full
- Temp of the host (cpu, hdd, ...)
...

I can deploy a VM for this (like Nagios or other) or using a raspberry to have an external device than my host.

Any idea ?
What do you suggest ?

Thanks