I built a basic Proxmox overhead calculator after nearly OOMing my cluster! (unknownuniverse.uk)
from TheIPW@lemmy.ml to homelab@lemmy.ml on 10 Aug 12:45
https://lemmy.ml/post/51205388

After coming close to running out of resources last week and having to re-purpose another device turning it into a 3rd Proxmox node, it got me thinking about how easily ZFS ARC cache and VM overhead sneak up on you.

So, I built a basic tool for rough guidance.

It calculates vCPU overcommit ratios and RAM allocation locally in your browser. Just pure client-side math so you don’t accidentally OOM your hypervisor like I almost did. Inputs stay right in your browser and aren’t saved anywhere.

Feedback or sanity checks on the math are welcome.

unknownuniverse.uk/tools/proxmox-calculator/

#homelab

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litchralee@sh.itjust.works on 10 Aug 13:12 next collapse

Is there a link somewhere? Maybe my reader isn’t showing the link?

TheIPW@lemmy.ml on 10 Aug 13:21 collapse

unknownuniverse.uk/tools/proxmox-calculator/

My bad lol

litchralee@sh.itjust.works on 10 Aug 13:25 collapse

Was AI used to generate part or all of this tool?

TheIPW@lemmy.ml on 10 Aug 14:13 collapse

I had the bulk of the tool written myself but used AI to help tweak the final polished version. I’ve always been open about my AI use in the past, I have a post on my blog about the subject. AI doesn’t generate my content, all ideas and opinions are my own but I do use it as a tool for refinement when needed.

warbond@lemmy.world on 10 Aug 13:21 next collapse

I’m new to this hobby and have only dipped my toes, but please tell me “out of mana” is a commonly accepted shorthand for this problem, because I love it

whats_a_lemmy@midwest.social on 10 Aug 14:17 collapse

Out Of Memory, but you can choose to believe what you like

warbond@lemmy.world on 10 Aug 14:28 collapse

Lol, that makes way more sense, thank you. Clearly hadn’t had enough coffee this morning!

f3nyx@lemmy.ml on 10 Aug 21:10 collapse

no no… you’re onto something

digdilem@lemmy.ml on 10 Aug 15:40 next collapse

It is possible to run Proxmox without using ZFS.

KairuByte@lemmy.dbzer0.com on 11 Aug 05:47 next collapse

Absolutely

B0rax@feddit.org on 23 Aug 05:48 collapse

But if you run it in a cluster you can replicate the volumes across nodes when ZFS is used.

ohshit604@lemmy.halstead.host on 10 Aug 23:12 collapse

I’ve OOM my Proxmox numerous times, too expensive to upgrade, so far has corrupted my VM’s a small handful of times, shout out to fsck for bringing everything back in order.

The worst is when the LVM-Thin storage is full, trying to get into a VM that can’t boot because it has no disk space left is horrendous and I never wish that upon anyone.