I wanted to add another member to my cluster and my provider said he can but on a different C -class. Will this work or will I have to move the whole cluster to new class to make it work?
Thanks
LXD cluster communications are using normal unicast, so each server can be in a completely different subnet and you’ll be fine.
Where things get potentially problematic is if you’re using fan networking as this derives part of the host-specific subnet from the part of the external address which differs between systems. At which point whether you’ll be fine or not may depend on the exact addresses you’re dealing with and what size fan subnet is used.