Max cluster size

[alexx]

Hi,

I'm currently running a 33 node cluster over 10GBit network for storage (ceph) and corosync. Second 10GBit network for ceph backend traffic.
I know this is not recommended, but that's the current state. Anyone has experience to how many nodes such setups could scale?
How many nodes can I run in the same cluster if I would use a dedicated 1GBit network for corosync? Are there any hard upper limits?
Thanks

 

[bbgeek17]

Hi @alexx,
there was a similar discussion recently here: https://forum.proxmox.com/threads/proxmox-with-48-nodes.174684

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[fstrankowski]

TLDR; This is an excellent go-through the requirements of corosync-tuning for larger clusters by @fweber (which is in fact part of linked thread by @bbgeek17)