[ovirt-users] ap7920 fencing device does not work

Hello, I am trying to use ap7920 as fencing device for ovirt 3.5.1 I have configured all parameters correctly but I get only: 2015-04-13 20:58:21,704 ERROR [org.ovirt.engine.core.bll.FenceExecutor] (ajp--127.0.0.1-8702-10) Failed to run Power Management command on Host , no running proxy Host was found. In my ovirt node I do fence_apc -a 10.1.0.208 -l apc -p apc -o status -n 7 -x and I get a correct reply "Status: ON" So command line is working. What can I do? Please help me! Thanks, Mario