High Availability Cluster with Two Nodes – Feasibility and Prerequisites

[Vignesh Ravi]

Hi team,

I would like to confirm whether a High Availability (HA) cluster can function effectively with only two nodes. If this configuration is supported, could you please share the necessary prerequisites and best practices for implementation?

 

[sterzy]

I would like to confirm whether a High Availability (HA) cluster can function effectively with only two nodes. If this configuration is supported, could you please share the necessary prerequisites and best practices for implementation?

Only if you use a QDEVICE, see the documentation [1].

[1]: https://pve.proxmox.com/pve-docs/pve-admin-guide.html#_corosync_external_vote_support