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Comment on How to prepare for future home server upgrade?

tofu@lemmy.nocturnal.garden ⁨1⁩ ⁨month⁩ ago

Should work indeed, but they’d need replicated space. I’m not sure how well that works if the cluster is only designed to be temporary, since removing a productive node from a cluster is a bit risky?

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frongt@lemmy.zip ⁨1⁩ ⁨month⁩ ago
I edited, since it was ambiguous. I think you only need zfs if you want replication, cold migrations should be fine without it.

Removing nodes from clusters is fine. It’s not really encouraged, but if a node fails you have to be able to remove it, so it’s possible.

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jonathan7luke@lemmy.zip ⁨1⁩ ⁨month⁩ ago

I’m not sure how well that works if the cluster is only designed to be temporary, since removing a productive node from a cluster is a bit risky

Good callout. Just did some reading on the concept of maintaining a quorum, which I didn’t know about. Definitely need to be careful if I go with that approach, but it does sound interesting! I’m not entirely opposed to leaving the old laptop as a node and then using it for experimental stuff or maybe running just one specific standalone service on it after moving the critical stuff to the new server.

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- frongt@lemmy.zip ⁨1⁩ ⁨month⁩ ago
  You don’t need multiple devices and quorum unless you’re using HA. I have two nodes just so I can migrate back and forth when doing updates instead of shutting all the VMs down. No quorum, no HA.
  
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  - jonathan7luke@lemmy.zip ⁨1⁩ ⁨month⁩ ago
    Oh, nice! Thanks for explaining that. I didn’t realize there was a way to run a cluster without HA.
    
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