How to fix xen virtual machine that cannot be accessed

Aim: Fix unreachable xen virtual machines. Note: When we forget the virtual machine root password or modify a certain configuration file in the system, the system will not start properly. At this time, we need to enter the single user mode to fix it. Command: xm create -c Domain (virtual machine name) column: First check which virtual machines are running. [root@localhost]#xm list

I want to enter the single-user mode of appdata_vm virtual machine, first shut down this virtual machine

[root@localhost]#xm shutdown appdata_vm enter single user< Br>

[root@localhost]#xm create -c appdata_vmgrub interface

In single-user mode under Grub, the rest, I will not say, you know!