Monitoring many instances

Is there any way to have netdata server monitor several instances? I would like to self-host this.

You can set one instance of Netdata as a parent and the other as children. Please look at the documentation. Does it help?

That does, thanks.
I am following these instructions: Enable streaming between nodes | Learn Netdata. I am on my netdata server. I couldn’t find stream.conf. I tried to edit netdata.conf, but couldn’t find the API_KEY string as mentioned, though.

I couldn’t find stream.conf

Have you tried

cd /etc/netdata
sudo ./edit-config stream.conf