Hi, just wondering if someone could check my work here... I used the 192.168.10.x subnet for my home network quite a few years ago. I used to be able to VPN into my home network from work until they used the same subnet for our irish office and now I can't vpn to my subnet anymore as it overlaps. I have a 4 node VMware VSAN cluster running on my network. The actual storage vlan is on a different subnet and I don't need to access that. I changed that recently.
I have 3 DNS servers 2 virtual and one physical but I also use host files on the vcenter and the four hosts as it isn't hard to maintain and the cluster can come back up with out any DNS server at all. So I want to change the management/vm subnet. All the VMs are DHCP other than the vcenter appliance and the domain controllers.. I need to change this to another subnet so I can once again VPN back to home. I have our companies subnet allocation spreadsheet and can put my new subnet in it so it won't happen again. So I am thinking for the cluster, if I just change all the hosts files, and change the management vmkernel IP addresses on that subnet to the new subnet, change the vcenter appliance IP address and host file - all from the console basically, that would achieve my moving the cluster to the new address range. Do the hosts, and IP kernels and connect direct to the host and change the vcenter appliance from the console on the host I am connected directly to..
Just thinking more, I wasn't planning on having any routing between the old subnet and the new subnet, but I was going to create a new VLAN on the cisco switch for the new subnet - but hadn't planned on routing between them... I guess if I did have routing between the old subnet, which is VLAN 1 and the new subnet which is VLAN TBD yet, I could do one device at a time changing just the hosts entery on all devices for that one device, leave it until its happy and then start on the next one...
Or is there a better way of doing it? I have one additional copper port on each host that I can setup a secondary mgmnt kernel on if needed as well.
Thanks
Bill