Script will error out in shared cluster environment.

[TheRockStarDBA]

The script will fail if running on a shared cluster running sql server as FCI. For a shared cluster the computer and cluster names are different.

[bezik46]

One can hardcode Cluster name in the script
$ComputerName = "CLUSTEREDSQL"

Still in my trials nothing is ever returned (not even for single server instance)

[aph3rson]

@TheRockStarDBA @scerazy #9 has been created to potentially fix this issue - would you mind taking a look to check if those changes fix the issues in a clustered environment?