Summary: Multi-node node expansion could fail at certain task in VxRail 4.5 and 4.5.100.


Article Content

Issue


When performing multi-node expansion from VxRail Manager the task fails with the following errors:

In VxRail Manager GUI
  • X nodes out of Y failed at 'Registering hosts with the DVS ' task
  • Failed:Registering ESXi hosts with Distributed Virtual Switch...
In vCenter Web Client
  • Cannot complete operation due to concurrent modification by another operation
  • The object or the item referred to could not be found
The error does not happen with single node expansion.
Cause
The VxRail code that creates the "reconfig spec" is not serialized so when multiple hosts are added, this can create a race condition and cause the process to fail.
 
Resolution
To workaround the issue, simply retry the operation.