I deleted all the clusters which I don't use and don't see from the webadmin through Ovirt shell. List Clusters: [oVirt shell (connected)]# list clusters id : 00000001-0001-0001-0001-00000000002b name : Default description: The default server cluster id : b90fb2b7-e6ae-4f50-a41e-4cc4044d769d name : Mendoza id : 0ccf2c40-7feb-40f7-826e-b225f3a58b71 name : Prueba Remove ghost clusters: [oVirt shell (connected)]# remove cluster Prueba status-state: complete [oVirt shell (connected)]# list clusters id : 00000001-0001-0001-0001-00000000002b name : Default description: The default server cluster id : b90fb2b7-e6ae-4f50-a41e-4cc4044d769d name : Mendoza [oVirt shell (connected)]# remove cluster Default status-state: complete