Raspberry Pi for monitoring server?

Question

Zabbix

Good day.
Due to its compactness, I want to purchase a Raspberry Pi 4 for home testing. Namely, zabbix, grafana and prometheus (I saw a lot of manuals on how to put them on a raspberry). And the question is, how many GB of RAM is needed for normal operation? 2gb, 4gb?
At home, there will be a maximum of 10 hosts.

Answer 1

Despite not a small number of hosts for monitoring, 2GB in 2021 is somehow not comme il faut. I looked at the memory consumption on one of my servers, on which promic + grafana is installed, there is no zabbix (~30 hosts are monitored):
3570MB prometheus
96MB grafana-server
So I drown for 4GB. Minimum.

Answer 2

In general, it is better not to take risks and take a maximum of 8GB. Let it be better with a margin than on the verge of working.
And like a raspberry under load, it heats up / does not heat up. Are there any nuances? I never even held it in my hands. And so you want. Compact and great for testing.

Answer 3

The question will be more about the survivability of memory for storing metrics, because. very intense rustling disc.

Answer 4

we used for zabbix proxy raspberry 3 generation with 1 gig. at 19. I don't remember any problems. without forced cooling, factory board in a simple case, without modifications