Change the alias name in USM is not persistent

Document ID : KB000095542
Last Modified Date : 11/05/2018
Show Technical Document Details
Issue:
In USM it is possible to change the alias of a device to a different name. It works for most devices but for some specific devices the change reverts back after a few seconds.
Environment:
UIM 8.51
Cause:
This is caused by some data issue in the UIM database and the way that the discovery_server is updating this information.

The following messages are logged in the portal.log of the UMP server where the change was made:

ERROR [DiscoveryUtils:] Unable to set the UserAlias property for ***: [1] One or more master instance IDs are invalid: [*****] 
ERROR [DiscoveryUtils:] Unable to set the UserAlias property for ***: [1] One or more master instance IDs are invalid: [*****] 
Resolution:
This problem is resolved in the upcoming UIM 9.0.

The following workaround should fix the problem:
  • deactivate the discovery_server
  • make a copy of discovery_server.cfg
  • remove the following lines from discover_server.cfg.
<udm> 
only_network_interface_config_items = true 
included_probes = "probe1, probe2, probe3, etc" 
</udm> 
  • activate discovery_server
  • make the change in the USM and wait for it to be saved
  • deactivate the discovery_server, restore the discover_server.cfg backup and activate the discovery_server again