Cluster Migration Steps?

[firegs]

Heya Gents

I plan to do an overhaul of our server nework - and one of the things I wanted to do was re-do our cluster. The node names are whacked, and I want to move the primary node to a totally different machine. I have four servers with VMs on them. What steps would I need to take to move the nodes and VMs to a new cluster? I know I'd have to create the new cluster first. Then what?

 

[m.ardito]

backup/restore?
I feel a live migration between different clusters is not that easy... but maybe.

Marco

 

[firegs]

Oh, it totally will not be live. Servers and VMs can go down/offline.

 

[m.ardito]

if you have shared storage accessible to both clusters, it could be just matter to move config files... manually.

Marco

 

[firegs]

Locations? I'm looking for a literal step by step. >.<

 

[m.ardito]

locations? what you mean?

I never tried, but should be like this
if you have nfs storage ZZZ, create a test vm XXX on old cluster node YYY with disk on that storage, then stop the vm.

you'll find /etc/pve/nodes/YYY/qemu-server/XXX.conf
with something like

bootdisk: virtio0
cores: 4
ide1: ZZZ:iso/vm-XXX-disk-1.raw
memory: 2048
name: testvm
net0: virtio=NN:NN:NN:NN:NN:NN,bridge=vmbr0
ostype: l26
sockets: 1

now you can move this file to the same location in the new cluster node (or create from gui a similar vm and then adjust its .conf

it could work.

Marco