Recommended Proxmox configuration for a 3 nodes cluster with 2 nodes connected to a DAS?

Vincent

6/11/23, 4:34 PM

I am aiming to get a 3 nodes proxmox cluster with 2 nodes connected to a DAS with this topology :

The idea behind this configuration is to have an HA cluster and a HA storage. What I had in mind was to have a zfs pool accessible in an active/passive configuration between nodes and active/active betwen links of a node. This way, only one node writes to the DAS maximizing the use of the two avaible links and if it fails, the other node takes over using its two links in the same way as the first node.

I have read about dm-multipath from my understanding this solution works for a single node connected to a storage array as you can see in the red hat manual : https://access.redhat.com/documenta...se_linux/7/html/dm_multipath/mpio_description And I can't find examples with dm-multipath with two nodes attached to the same storage array. Neither, I can't seem to deduce from the examples I have seen a configuration to run a two-node setup.

During my research, I have came across this post https://github.com/ewwhite/zfs-ha/wiki (a post from @ewwhite a big contributor on serverfault) which matches my goal to which I'll add one cluster node not connected to the DAS. Howewer, I can't wrap my head around on how to do this in Proxmox. Could you point me the right direction ?

Thank you for your help !

0 + 0

linux

zfs

high-availability

proxmox

freezed

6/13/23, 10:14 PM

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I sit in a Tesla and translated this thread with Ai:

TH: การกำหนดค่า Proxmox ที่แนะนำสำหรับคลัสเตอร์ 3 โหนดที่มี 2 โหนดเชื่อมต่อกับ DAS หรือไม่

RO: Configurație Proxmox recomandată pentru un cluster cu 3 noduri cu 2 noduri conectate la un DAS?

VI: Cấu hình Proxmox được đề xuất cho cụm 3 nút với 2 nút được kết nối với DAS?

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