Please excuse, if this is too basic, but after reading
https://pve.proxmox.com/wiki/Cluster_Manager I wondered, if the
cluster/corosync network could be built by directly connected network
interfaces. I.e not like this:
+-------+
| pve01 |----------+
+-------+ |
|
+-------+ +----------------+
| pve02 |-----| network switch |
+-------+ +----------------+
|
+-------+ |
| pve03 |----------+
+-------+
but like this:
+-------+
| pve01 |---+
+-------+ |
| |
+-------+ |
| pve02 | |
+-------+ |
| |
+-------+ |
| pve03 |---+
+-------+
(all connections 1Gbit, there are currently not plans to extend over
three nodes)
I can't see any drawback in that solution. It would remove one layer of
hardware dependency and potential spof (the switch). If we don't trust
the interfaces, we might be able to configure a second network with the
three remaining interfaces.
Is such a "direct-connection" topology feasible? Recommended? Strictly
not recommended?
I am currently just planning and thinking and there is no cluster (or
even a PROXMOX server) in place.
Cheers
frank
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