If you build virtual machines in Azure you may find this script useful.
Currently it’s not the fastest it could likely be if you have a large subnet but it works for my needs.
It mixes two resources to make what I needed.
Resources:
1. List IP addresses in a range (Microsoft – https://gallery.technet.microsoft.com/scriptcenter/List-the-IP-addresses-in-a-60c5bb6b)
2. Check IP Addresses Available in Azure Virtual Network (IT Pro Windows – http://windowsitpro.com/azure/check-ip-addresses-available-azure-virtual-network)
function Get-IPrange { <# .SYNOPSIS Get the IP addresses in a range .EXAMPLE Get-IPrange -start 192.168.8.2 -end 192.168.8.20 .EXAMPLE Get-IPrange -ip 192.168.8.2 -mask 255.255.255.0 .EXAMPLE Get-IPrange -ip 192.168.8.3 -cidr 24 #> param ( [string]$start, [string]$end, [string]$ip, [string]$mask, [int]$cidr ) function IP-toINT64 () { param ($ip) $octets = $ip.split(".") return [int64]([int64]$octets[0]*16777216 +[int64]$octets[1]*65536 +[int64]$octets[2]*256 +[int64]$octets[3]) } function INT64-toIP() { param ([int64]$int) return (([math]::truncate($int/16777216)).tostring()+"."+([math]::truncate(($int%16777216)/65536)).tostring()+"."+([math]::truncate(($int%65536)/256)).tostring()+"."+([math]::truncate($int%256)).tostring() ) } if ($ip) {$ipaddr = [Net.IPAddress]::Parse($ip)} if ($cidr) {$maskaddr = [Net.IPAddress]::Parse((INT64-toIP -int ([convert]::ToInt64(("1"*$cidr+"0"*(32-$cidr)),2)))) } if ($mask) {$maskaddr = [Net.IPAddress]::Parse($mask)} if ($ip) {$networkaddr = new-object net.ipaddress ($maskaddr.address -band $ipaddr.address)} if ($ip) {$broadcastaddr = new-object net.ipaddress (([system.net.ipaddress]::parse("255.255.255.255").address -bxor $maskaddr.address -bor $networkaddr.address))} if ($ip) { $startaddr = IP-toINT64 -ip $networkaddr.ipaddresstostring $endaddr = IP-toINT64 -ip $broadcastaddr.ipaddresstostring } else { $startaddr = IP-toINT64 -ip $start $endaddr = IP-toINT64 -ip $end } for ($i = $startaddr; $i -le $endaddr; $i++) { INT64-toIP -int $i } }function Get-FirstAvailableIP { <# .SYNOPSIS Get the first available IP address in a range .EXAMPLE Get-FirstAvailableIP vNetworkName 10.60.0.128 26 #> param ( [string]$networkName, [string]$networkIP, [int]$networkCIDR ) $setIP=0 foreach ($ip in $(Get-IPrange -ip $networkIP -cidr $networkCIDR)) { $Address = Test-AzureStaticVNetIP -VNetName $networkName -IPAddress $ip If ($Address.IsAvailable –eq $False) { #Write-Host "$ip is not available" -ForegroundColor Red } else { #Write-Host "$ip is available" -ForegroundColor Green $setIP=$ip break } } Write-Output $setIP } |
All information on this site is shared with the intention to help. Before any source code or program is ran on a production (non-development) system it is suggested you test it and fully understand what it is doing not just what it appears it is doing. I accept no responsibility for any damage you may do with this code.