Create a Replicated Group After Reverting Omnissa Horizon Connection Server to a Snapshot

If an upgrade fails, or if for some other reason, you must revert a virtual machine that hosts Horizon Connection Server to a snapshot, you must uninstall the other Horizon Connection Server instances in the group and recreate the replicated group.

If you revert one Horizon Connection Server virtual machine to a snapshot, the Horizon LDAP objects in the database of that virtual machine are no longer consistent with the Horizon LDAP objects in the databases of the other replicated instances. After you revert to a snapshot, the following event is logged in the Windows Event log, in the OmnissaHzeDS Event log (Event ID 2103): The Active Directory Lightweight Directory Services database has been restored using an unsupported restoration procedure. The reverted virtual machine stops replicating its Horizon LDAP.

If you find it necessary to revert to a snapshot, you must uninstall other Horizon Connection Server instances and uninstall the Horizon LDAP database on those virtual machines and then reinstall replica instances.

Prerequisites

Determine which Horizon Connection Server instance is to be the new standard, or golden Horizon Connection Server. This Horizon Connection Server has the desired Omnissa Horizon 8 configuration data.

Procedure

1. On all Horizon Connection Server instances except the one chosen to be the new standard Horizon Connection Server instance, uninstall Horizon Connection Server and the Horizon LDAP instance.

   The name of the Horizon LDAP database instance is OmnissaHzeDS.

2. On the virtual machine that hosts the standard, or golden Horizon Connection Server instance, open a command prompt and enter the following command to ensure that replication is not disabled.

   repadmin /options localhost:389 -DISABLE_OUTBOUND_REPL -DISABLE_INBOUND_REPL

3. On the virtual machines that are to host the replica Horizon Connection Server instances, run the Horizon Connection Server installer, select the Replica Server installation option, and specify the host name or IP address of the standard Horizon Connection Server instance.

Results

The replicated group of Horizon Connection Server instances is recreated and their Horizon LDAP objects are consistent.