Reinstallation of RHEV Hypervisor fails with "Cannot add Host - unique id is ambiguous with hosts"

Solution Verified - Updated -

Issue

  • Unable to activate RHEV Hypervisor node after re-installation, even after changing IP & Hostname.

  • The RHEV Manager's rhevm.log contains the error message:

    2012-06-07 17:13:25,252 WARN  [org.ovirt.engine.core.bll.AddVdsCommand] (http-0.0.0.0-8443-1) CanDoAction of action AddVds failed. 
    Reasons:VDS_REGISTER_UNIQUE_ID_AMBIGUOUS,$HostNameList rhev1,VAR__ACTION__ADD,VAR__TYPE__HOST

  • RHEVM GUI displays the error message:

    Cannot add Host - unique id is ambiguous with hosts

Environment

  • Red Hat Enterprise Virtualization Manager 3.0
  • Red Hat Enterprise Virtualization Hypervisor 6.2 (20120209.0.el6_2)

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