# Move an Connected ESXi host between vCenters via PowerCLI 
# found https://vmscribble.com/powercli/move-an-connected-esxi-host-between-vcenters-via-powercli

# thanks for the SecurePassword function https://www.powershelladmin.com/wiki/Powershell_prompt_for_password_convert_securestring_to_plain_text.php

Function ConvertFrom-SecureToPlain {
 
    param( [Parameter(Mandatory=$true)][System.Security.SecureString] $SecurePassword)
    
    # Create a "password pointer"
    $PasswordPointer = [Runtime.InteropServices.Marshal]::SecureStringToBSTR($SecurePassword)
    
    # Get the plain text version of the password
    $PlainTextPassword = [Runtime.InteropServices.Marshal]::PtrToStringAuto($PasswordPointer)
    
    # Free the pointer
    [Runtime.InteropServices.Marshal]::ZeroFreeBSTR($PasswordPointer)
    
    # Return the plain text password
    $PlainTextPassword
   }

# Setup Variables
$vCenter_Source = Read-Host "Enter the FQDN of the Source vCenter"
$vmhost = Read-host "Enter in the FQDN of the ESXi host"
$SecurePassword = Read-Host "Enter ESXi Root Password" -AsSecureString
$Password = ConvertFrom-SecureToPlain ($SecurePassword)
$vCenter_Destination = Read-Host "Enter the FQDN of the Destination vCenter"
$Cluster = Read-host "Enter in the Destination Cluster Name"

# Connect to your Source vCenter and Disconnect the ESXi host
Connect-VIServer $vCenter_Source | Out-Null
Write-Host " "
Read-Host "Hit ENTER to Disconnect ESXi host - $vmhost"
Set-VMHost -VMHost $vmhost -State "Disconnected"

# Remove ESXi host
Write-Host " "
Read-Host "Hit ENTER to Remove ESXi host $vmhost from vCenter $vCenter_Source"
Remove-VMHost -VMHost $vmhost -Confirm:$false

# Disconnect from the Source vCenter
Disconnect-VIServer $vCenter_Source -Force -Confirm:$false

# Wait 10 Seconds
Start-Sleep -Seconds 10

# Connect to the Destination vCenter and add the ESXi host to the cluster
Connect-VIServer $vCenter_Destination | Out-Null
Write-Host " "
Add-VMHost $vmhost -location $Cluster -user root -password $Password -force:$true

# Disconnect from the Destination vCenter
Disconnect-VIServer $vCenter_Destination -Confirm:$false