Discover how much NLB is running in your environment

nlb_discovery.ps1

$output = @{}

$servers = Get-SCVirtualMachine | Select Name, VirtualNetworkAdapters

$nics = $servers | ForEach-Object {
  $NIC = $_.VirtualNetworkAdapters
  ForEach ($adapter in $NIC) 
  {
    If ($adapter.VirtualNetwork -like "*FrontEnd*")
    {
      $adapter.Name
    }
  }
}
$nics | Foreach-Object {
  try 
  {
    $nlbcluster = Get-NlbCluster $_
  }
  catch
  { 
    write-host "No cluster for $_"
    return
  }

  # Each NLB Node will return the same data, so just do it once per cluster:
  If (-Not $output.containskey($nlbcluster.name) )
  { 
    $nodes = Get-NlbClusterNode -InputObject $nlbcluster
    $config= Get-NlbClusterPortRule -InputObject $nlbcluster
    $vip = Get-NlbClusterVip -InputObject $nlbcluster

    $output[$nlbcluster.name] = [ordered]@{}
    $output[$nlbcluster.name] += @{ cluster_name = $nlbcluster.name }
    $output[$nlbcluster.name] += @{ cluster_nodes = @() }

    # Stuff nodes into this cluster's object
    for ($i=0; $i -lt ($nodes).Count; $i++) 
    {
      $nodedip = Get-NlbClusterNodeDip -InputObject $nodes[$i]

      $node = [ordered]@{}
      $node["hostname"]  = $nodes[$i].name 
      $node["fqdn"]  = $nodes[$i].Host
      $node["state"] = $nodes[$i].State.NodeStatusCode.ToString()
      $node["interface_name"] = $nodes[$i].InterfaceName
      $node["node_ip"] = $nodedip.ipaddress
      $node["node_netmask"] = $nodedip.subnetmask

      $output[$nlbcluster.name]["cluster_nodes"] += $node
    }

    ## Repeat for $config and $vip...
  }
}

$date = Get-Date -Format dd-MM-yy
$output | ConvertTo-Json -Depth 99 | Out-File c:\tmp\nlb_config-$date.js -Encoding utf8 -Force