Does anyone knows if obtaining a static IP address for a Web or Worker Role on Windows Azure is possible (possibly only in private beta)?
A few years later, Azure now lets you reserve IP addresses for VMs and cloud services (Web and Worker roles). However, it is only accessible from PowerShell for the time being (this will change in the future, apparently).
The first five static IP addresses are free. To create an IP you will need to make sure you have the latest version of the Azure PowerShell command-line interface and also have your Azure account linked to Azure PowerShell (outside the scope of this post but not hard).
To Create a new IP in PowerShell:
$ReservedIP = New-AzureReservedIP -ReservedIPName "FirewallIP" -Label "WebAppFirewallIP" -Location "Japan West"
To associate it with a VM:
New-AzureVMConfig -Name "WebAppVM" -InstanceSize Small -ImageName $images[60].ImageName | Add-AzureProvisioningConfig -Windows -AdminUsername cloudguy -Password Abc123 | New-AzureVM -ServiceName "WebApp" –ReservedIPName $ReservedIP -Location "Japan West"
To insert your new IP into a Web or Worker Role (if the worker role has an external endpoint), add the following to ServiceConfiguration.Cloud.cscfg:
<ServiceConfiguration>
<NetworkConfiguration>
<AddressAssignments>
<ReservedIPs>
<ReservedIP name="<reserved-ip-name>"/>
</ReservedIPs>
</AddressAssignments>
</NetworkConfiguration>
</ServiceConfiguration>
To view an IP at any time:
Get-AzureReservedIP -ReservedIPName "FirewallIP"
Source: Documentation