I had some spare time and it’s been a while since I did anything with the vROps API. Until I checked the VMware community

This sounds like something fun to do. So here is the outcome!

<#

Author: Kabir Ali - info@kablog.nl
Scriptname: VF (vCenterFinder)
Version: 1.1 (Tested)
Date: Dec 18 2020 
Why: bridrod asked for it @ https://communities.vmware.com/t5/vRealize-Operations-Manager/Finding-a-VM-in-vROPS-and-vCenter-VM-belongs-to-using-Powershell/m-p/2874272/emcs_t/S2h8ZW1haWx8dG9waWNfc3Vic2NyaXB0aW9ufEtWNlRCQ0tMSlg2V08yfDI4NzQyNzJ8U1VCU0NSSVBUSU9OU3xoSw#M18803
Remark: Test setup
        vROps Version 8.4.0 (17863947)

Update: 1.1 - filter on only virtualMachines - line 68
#>

<#
Example:

.\VF.ps1 -vROpsServer "vROps.local.domain" -vROpsUser "admin" -vROpsPass "VMware1!" -VMName "Ubuntu"

#>

Param (
    
    [Parameter(Mandatory = $true)][string]$vROpsServer,
    [Parameter(Mandatory = $true)][string]$vROpsUser,
    [Parameter(Mandatory = $true)][string]$vROpsPass,
    [Parameter(Mandatory = $true)][string]$VMName
)

# Adding certificate exception to prevent API errors
add-type @"
    using System.Net;
    using System.Security.Cryptography.X509Certificates;
    public class TrustAllCertsPolicy : ICertificatePolicy {
        public bool CheckValidationResult(
            ServicePoint srvPoint, X509Certificate certificate,
            WebRequest request, int certificateProblem) {
            return true;
        }
    }
"@
[System.Net.ServicePointManager]::CertificatePolicy = New-Object TrustAllCertsPolicy

# Building vROps API string & invoking REST API
$BaseURL = "https://" + $vROpsServer + "/suite-api/api/"
$BaseAuthURL = "https://" + $vROpsServer + "/suite-api/api/auth/token/acquire"
$Type = "application/json"
# Creating JSON for Auth Body
$AuthJSON =
"{
  ""username"": ""$vROpsUser"",
  ""password"": ""$vROpsPass""
}"
# Authenticating with API
Try {
    $vROpsSessionResponse = Invoke-RestMethod -Method POST -Uri $BaseAuthURL -Body $AuthJSON -ContentType $Type
}
Catch {
    $_.Exception.ToString()
    $error[0] | Format-List -Force
}
# Extracting the session ID from the response
$vROpsSessionHeader = @{"Authorization"="vRealizeOpsToken "+$vROpsSessionResponse.'auth-token'.token
"Accept"="application/json"}


# Get VM's unique identifier
Try {
$VMNameURI = $BaseURL+"resources?resourceKind=virtualmachine&name=" +$VMName
$VMNameID = (Invoke-RestMethod -Method GET -Uri $VMNameURI -Headers $vROpsSessionHeader -ContentType $Type).resourceList.identifier
}
Catch {
    $_.Exception.ToString()
    $error[0] | Format-List -Force
}

# Get VM's vCenter
Try {
$VMvCenterURI = $BaseURL+"resources/properties?resourceId="+$VMNameID
$VMvCenter = ((Invoke-RestMethod -Method GET -Uri $VMvCenterURI -ContentType $Type -Headers $vROpsSessionHeader).resourcePropertiesList.property | where {$_ -like "*summary|parentVcenter*"}).value
}
Catch {
    $_.Exception.ToString()
    $error[0] | Format-List -Force
}

# Output
Write-Host "Found VM:" $VMName "on vCenter:" $VMvCenter

# Close sessions and done
Invoke-RestMethod -Method POST -Uri $BaseURL"/auth/token/release" -Headers $vROpsSessionHeader -ContentType $Type