Is it possible to change the IPv4 subnet size on an existing SDN Fabric? I would like to go from a /24 to a /27, which won't require changing any IP addresses, since the three IP addresses allocated for the Ceph network will still fit. That will allow me to allocate some of the space to a dedicated Corosync network. I cannot just randomly pick a new IP address, as private address spaces are "randomly" allocated and routed internally within the organisation, so if I pick something and it is later allocated by networks, things will start breaking. I could ask for more space, but for reasons I would prefer not to.
However, when I click on edit in the web interface, I cannot change the address prefix to change the network size.
I am wondering whether I can just change it in /etc/pve/sdn/fabrics.cfg on each node and then reload the networking on each node in the cluster if "ifreload -a"? The system is not yet in production, nor does it have any running VMs other than test ones that can be shut down during the change. I would rather not redo the Ceph config.
However, when I click on edit in the web interface, I cannot change the address prefix to change the network size.
I am wondering whether I can just change it in /etc/pve/sdn/fabrics.cfg on each node and then reload the networking on each node in the cluster if "ifreload -a"? The system is not yet in production, nor does it have any running VMs other than test ones that can be shut down during the change. I would rather not redo the Ceph config.