Setup Windows Server NLB

SetupNLB.ps1

# Install Network Load Balancing and Tools
Write-Host "Install Network Load Balancing and Tools"
Add-WindowsFeature NLB, RSAT-NLB
Import-Module NetworkLoadBalancingClusters

# If the cluster hasn't been created yet then create it
if (!(Get-NlbCluster -HostName $clusterIpAddress -ErrorAction SilentlyContinue))
{
    Write-Host "Creating NLB Cluster: $clusterName" -ForegroundColor yellow 

    # Create Cluster (default unicast)
    New-NlbCluster -InterfaceName $interfaceName -ClusterName $clusterName -ClusterPrimaryIP $clusterIpAddress -SubnetMask $clusterSubnet 

    # Remove defaults
    Write-Host "Removing default port rules" -ForegroundColor yellow 
    Get-NlbClusterPortRule | Remove-NlbClusterPortRule -Force

    # Create port rules
    Get-NlbCluster | Add-NlbClusterPortRule -StartPort 80 -EndPort 80 -Protocol TCP -Affinity None | Out-Null
    Get-NlbCluster | Add-NlbClusterPortRule -StartPort 443 -EndPort 443 -Protocol TCP -Affinity None | Out-Null 
}
else
{
    Get-NlbCluster 
}

# if this node isn't already a member of a cluster then add it
if(!(Get-NlbClusterNode -HostName $env:COMPUTERNAME))
{
    # Add node to cluster
    Write-Host "Adding node to cluster: $clusterName" -ForegroundColor yellow 
    Get-NlbCluster -HostName $clusterIpAddress | Add-NlbClusterNode -NewNodeName $env:COMPUTERNAME -NewNodeInterface $interfaceName
}
else
{
    Get-NlbClusterNode
}