On Fri, Nov 06, 2015 at 10:57:58 +0300, Fırat KÜÇÜK wrote: > Hello, > > I want to live migrate a vm from one host to another host. Bu I got this > error: > > error: internal error: process exited while connecting to monitor: > 2015-11-06T07:53:59.006762Z qemu-system-x86_64: Failed to start VNC > server on `0.0.0.0:3': Failed to bind socket: Address already in use Did you explicitly ask for this port in the domain XML? What does the <graphics> element in the domain XML look like? In case you explicitly asked for port 3 I suggest switching to autoport to avoid similar issues in the future. > The same VNC port is in use at the destination host. Is it possible to > change port address without rebooting the server? Yes, you can change the port number while migrating: - "virsh dumpxml --migratable VM > VM.xml" - edit VM.xml and change the port number - add "--xml VM.xml" option to you virsh migrate command Jirka