after call pvesh create /nodes/1/qemu/1/pveproxy or with -websocket option there is json string with port 5900 returned, but server is not listening on 5900.
i tried to use pvesh create /nodes/1/qemu/1/monitor -command='change vnc 0.0.0.0:100,password' the result is 200 OK,
but next pvesh create...