this post was submitted on 24 Aug 2024
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Should I keep shared or separate k8s clusters? (eviltoast.org)
submitted 2 months ago by johntash@eviltoast.org to c/selfhosted@lemmy.world
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I've been in the process of migrating a lot things back to kubernetes, and I'm debating whether I should have separate private and public clusters.

Some stuff I'll keep out of kubernetes and leave in separate vms, like nextcloud/immich/etc. Basically anything I think would be more likely to have sensitive data in it.

I also have a few public-facing things like public websites, a matrix server, etc.

Right now I'm solving this by having two separate ingress controllers in one cluster - one for private stuff only available over a vpn, and one only available over public ips.

The main concern I'd have is reducing the blast radius if something gets compromised. But I also don't know if I really want to maintain multiple personal clusters. I am using Omni+Talos for kubernetes, so it's not too difficult to maintain two clusters. It would be more inefficient as far as resources go since some of the nodes are baremetal servers and others are only vms. I wouldn't be able to share a large baremetal server anymore, unless I split it into vms.

What are y'all's opinions on whether to keep everything in one cluster or not?

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[–] theroff@aussie.zone 2 points 2 months ago

Yeah it is a bit of a pain. I currently only have a few users. Tooling-wise there are ways to tail the journals (if you're using journalctl) and collate them but I haven't gotten around to doing this myself yet.