SMALL Proxmox Cluster Tips | Quorum and QDevices, Oh My! (+ Installing a QDevice on a RasPi)

So you want to turn your one or two Proxmox nodes into a small Proxmox cluster? What do you need to know about quorum, especially as it pertains to really small clusters of 2 and 3 nodes? In this video, I go over the different ways to stabilize a 2-node cluster for high availability, the storage requirements for high available VMs, using a Raspberry Pi as a QDevice, and if you even need one. I also talk about how a QDevice might not help you as much as you think in a 3 node cluster.

I also cover installing a the QDevice daemon on a Raspberry Pi, and using a very small Proxmox node to maintain quorum without allowing it to be part of the high available VM pool.

Blog post:

My Discord server:

Timestamps:
00:00 - Introduction
00:35 - Hardware
01:22 - Two Nodes Not Clustered
03:39 - Two Nodes Clustered
05:55 - Two Nodes Extra Vote Hack
07:34 - Two Nodes + One Quorum Only
09:28 - Shared Storage or Replication?
12:08 - QDevice on Raspberry Pi
16:46 - Two Nodes + QDevice
18:24 - Three Nodes + QDevice
20:51 - Conclusions and Future

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[jimallen]

Well done! I have watched many videos on Proxmox and read a bunch online about config, and I must say that your explanations are the clearest and most accessible. No fluff or ego, just clear and concise explanations and demo. I wish other YouTuber's could follow your lead.

[d-trax-music]

I've watched a whole bunch of Proxmox videos, which weren't as informative as yours! Finally understood wth is Proxmox. Thanks for that!

[brainamess]

I had been directed to this video when I had just started with proxmox a few months ago but was so lost. Coming back today I appreciate this video so much. Thank you.

[koloblicin]

This channel really is the gift that keeps on giving for me. Some videos still *woosh* over my head with condensed facts, but others would randomly pop up to help me tackle another challenge.

[mtothem]

I can't put my finger on it. But the way you describe things are top notch. And keeps the viewer interested in the topic.

[marcon]

exactly what i was looking for. a double vote for my primary server who must be always on. so i can leave my second node powered off when i don't need him. Superb explanation

[JL-dbyc]

Excellent tutorials you have in your channel! This is what I needed to create my first cluster with two nodes. Thank you.

[nyanates]

Thanks so much for these small cluster vids. Very clear and concise. Answers a lot of the questions I’ve been wrestling with getting started. Still learning it but I really like Proxmox and the solution it provides.

[iamweave]

Thanks for answering my question about if a node loses connectivity but doesn't go down and how that affects replication when connectivity is restored. Love your vids!

[dubscheckem]

Your explanations helped me better understand quorum and solve some issues i was having ! cheers

[a-]

bro.. this is not small cluster
this is not home server
i use this for production server in my office
u save my life
big respect sir

[DarthBobo]

I have literally just got into proxmox - also running ha and octoprint etc. really looking forward to further videos on your channel. Keep up the good work.

[ohokcool]

Great update to your other vid, I realized after watching that it’s perfect for the use case you outlined but that it only worked one way. I think I’ll go for a 3rd “witness” node for the quorum.

[chkpwd]

You explain things so well. Would you mind doing a video on creating self signing certificates to avoid the SSL certificate error on the browser?

[JavierPerez-fqfi]

Awesomely well explained with step by step examples! Thank you dude!!

[philbos]

Haha I love the fact that around 6:29 ge realized he forgot to film the reconnection of pve2 and just plain reversed the clip of taking the ethernet cable out. Made me chuckle

Great video, will keep watching!

[carlosjackson]

Your qdevice setup worked like a charm! Thanks!!

[MrNoBSgiven]

Thank you for this video. I made my life easier. I do run a two node "cluster" on Pi2 and Pi3 for pihole and unbound services using a virtual ip (keepalived). One suggestion: do NOT upgrade yoru kernel on SD card and reboot Pi AFTER but BEFORE you do this . 😜

[JeanFrancoCaringi]

terrific explanation, thank you very much!

grettings from Mexico!

[CosminStefanMarin]

This was clear and concise. Thank you.