Change Pool Master on Citrix XenServer

Unless I’m overlooking something, there’s still no way to do this in XenCenter. Oh well, here’s how you do it from the command line:

First disable high availability:

                      xe pool-ha-disable
                      

Now list your XenServer hosts:

                      xe host-list
                      

Using the list above, designate a new pool master by supplying the uuid associated with the desired host:

                      xe pool-designate-new-master host-uuid=<uuid>
                      

You’ll probably lose connection to the pool at this point, but that’s normal behavior. Once XenCenter reconnects (this should happen automatically), it’s safe to re-enable high availability:

                      xe pool-ha-enable