All backup or replication tasks are failing on a single host in a cluster with the following error "An item with the same key has already been added." If you migrate the VM to a different host the backup will complete successfully. Migrate the VM back to the host and it will fail again with the same error.
The vRanger back end tools are stored in the .vzbin folder and have gotten corrupted. Removing this directory and rerunning the job will recreate this directory.
1. Putty into the ESX host.
2. Navigate to /tmp and remove the .vzbin directory [ cmd = rm -rf /tmp/.vzbin ]. Restart the three vRanger services, refresh the inventory, and recreate the job.
3. Stop the vRanger API service.
4. Stop the vRanger FLR service.
5. Restart the vRanger service.
6. Start the vRanger FLR service.
7. Start the vRanger API service (please wait 10 seconds after you have started the vRanger service before starting.)
8. Refresh the inventory.
9. Recreate the backup job.