How to Change/Add NEW PRVT Network to Vanilla Cluster; Post Cluster Build?


Jul 1, 2020
Hello as the title states, I would like some insight on configuring my very vanilla proxmox cluster that is presently on my main network. Of Course, after the cluster creation I read (I know, I know, next time read 1st) that the cluster should be on its own network with intentions to configure Ceph next.

I have now configured a VLAN just for this cluster's back channel communication/migrations. My question is, what would be the correct/fastest to way to configure this vanilla cluster to use this VLAN? Or should I dissolve the vanilla cluster, reconfigure each with the new VLAN, and then rebuild the cluster?

Screenshot 2023-10-08 100820.png
You should be able to change the configuration for Corosync as described in the following wiki article [1]. Please note that separate network in this case also means that there should be dedicated network hardware for this network, as sharing the switch with other VLANs does not really do anything to mitigate possible issues that are related to sharing the network with other services.

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