The error log is :

VDSM olvms3 command GetVmsNamesFromExternalProviderVDS failed: Cannot recv data: Host key verification failed.: Connection reset by peer

But if I use the virsh, it can connect.

[root@olvms1 ~]# virsh -c qemu+ssh://root@192.168.10.175/system

root@192.168.10.175's password:

Welcome to virsh, the virtualization interactive terminal.

Type:  'help' for help with commands

       'quit' to quit

virsh #

virsh #

virsh # list

Id   Name   State

--------------------

virsh #

virsh #

virsh # list --all

Id   Name    State

------------------------

-    1.vm1   shut off

virsh #

Why ??