Creates a VMKernel port on each host connected to a vCenter instance. This will eventually get rolled into the master toolkit, so look there for updates

CreateVMK.ps1

#---------------------------------------------------------------------
# Name:         CreateVMK.ps1                                
# Author:       Matthew Oswalt                                         
# Created:      11/8/2013                                             
                                            
# Description:  Creates a VMKernel port on each host connected to a vCenter instance. This will eventually get rolled into the master toolkit, so look there for updates                                        
#---------------------------------------------------------------------

#Import PowerCLI Module
Add-PSSnapin VMware.VimAutomation.Core

#Connect to vCenter
Connect-VIServer -Server 10.102.43.12 -User root -Password vmware

#Must use below format for stating subnet of new VMK ports (everything but the numbers in the last octet - that's generated automatically)
$newSubnet = "10.102.32."
$subnetMask = "255.255.255.0"
$strPG = "1KV_CTRL"

#Using the $_ method here, equivalent to the "this" nomenclature in java and .net
Get-VMHost | foreach {
    
    #pull address of management VMK to use as a baseline for new address (use the same last octet)
    $thisVMK = $_ | Get-VMHostNetworkAdapter -name vmk0

    #Retrieve last octet, without decimal
    $lastOctet = $thisVMK.IP.substring($thisVMK.IP.LastIndexOf(".") + 1, $thisVMK.IP.Length - $thisVMK.IP.LastIndexOf(".") - 1)

    $thisIPaddr = [string]::Concat($newSubnet, $lastOctet.ToString())

    New-VMHostNetworkAdapter -VMHost $_ -VirtualSwitch vSwitch0 -PortGroup $strPG -IP $thisIPaddr -SubnetMask $subnetMask
    $PG = Get-VirtualPortgroup -Name $strPG -VMHost $_ 
    Set-VirtualPortGroup -VirtualPortGroup $PG -VlanId 232
   
}