Create virtual machine fail


I try to instantiate a VM from template. It always show fail on SunStone.
I got below error message from SunStone.

Thu Jul 14 13:12:55 2016 : Error executing image transfer script: Error copying node1.local:/var/lib/one//datastores/1/599afc71a8c11d5507d308369e0f4906 to node2:/var/lib/one/datastores/0/60/disk.0

node1 can SSH to node2 using passwordless SSH without problem.

Is there some setting missing?