Skip to main content

Azure IAAS : Enable RDP to Load balanced VMs in a cloud service

I faced a confusing situation recently, where I had to enable RDP to two VMs in the same cloud service using endpoints included in a load balanced set.

A load balanced set was created for the RDP port 3389 and both VMs were included in the set. However, if we select the invidual VMs from the management portal-> click connect, you will get the following error message

"An external endpoint to the Remote Desktop port(3389) must first be added to the role"

That was pretty confusing, since the port is already defined in the load balanced set  !! .

After playing around for a bit, I found out that I was doing it all wrong !!.. The load balancer set works from a cloud service perspective. So the RDP load balanced set along with the other load balanced ports are defined for the cloud service. That means I can actually RDP  by providing the cloud service name, and it will land me on one of the VMs in the cloud service. From the VM, you can rdp to any other VM in the cloud service by simply providing the VM name, not even the cloudapp.net suffix is required!! So that is how you RDP to your VMs in a cloud service, though there is a chance of multiple hops if  you have multiple VMs.

But, is this the only option? What if you dont want to 'multi hop ' to the VMs.  Of course, there is a straight forward way of adding RDP endpoints individually to the VMs rather than creating a load balanced set. However the catch here is that you need to use multiple public ports. If you wish to use default port '3389', you can very well do so..but only for one VM in a cloud service. Azure wouldnt allow you to use the same public port twice within VMs in the same cloud service. Hence you will have to go for a different/random port. Problem comes when you  try an RDP to these random ports from within a firewalled network. You would need this port to be opened in your perimeter firewall to the Azure IP address to enable the RDP. Not a bright idea, I would say , since the Azure IP ranges keep changing. Even Microsoft doesn't recommend hardcoding their IP ranges to create firewall rules in your organization network. Hence better go the 'multi hop' way .

Comments

Popular posts from this blog

Windows server 2012: where is my start button??

If you have been using Windows Server OS for a while, the one thing that will strike you most when you login to a Windows server 2012 is that there is no start button!!.. What??..How am I going to manage it?? Microsoft feels that you really dont need a start button, since you can do almost everything from your server  manager or even remotely from your desktop. After all the initial configurations are done, you could also do away with the GUI and go back to server core option.(In server 2012, there is an option to add and remove GUI). So does that mean, you need to learn to live without a start button. Actually no, the start button is very much there .Lets start looking for it. Option 1: There is "charms" bar on the side of your deskop, where you will find a "start" option. You can use the "Windows +C" shortcut to pop out the charms bar Option 2: There is a hidden "start area"in  the bottom left corner of your desktop

Use Diskpart to make drives online

Issue: In disk management, disk is shown as missing or Offline in Windows Resolution: The disks can be made online by using diskpart utility - Open a command prompt->type diskpart -Inorder to list the disks in the system type: list disk -Note down the number of the disk that you want to make online -Select that disk to operate upon, For eg:, if the disk number is 1, type: Select disk 1 -Now that particular disk will be selected as teh active disk. If you type "list disk" command once more, you can see a * symbol on the left side of the selected disk -Inorder to make the selected disk online type : online disk - If the disk is made online, you will get a message that the operation is completed successfully

Kubernetes best practices in Azure: AKS name space isolation and AAD integration

Once you have decided to run your workloads in AKS service in Azure, there are certain best practices to be followed during design and implementation. In this blog we will discuss two of these recommended practices and the practical aspects of their implementation- Azure AD integration and name space isolation While AAD helps to authenticate users to your AKS cluster using the existing users and groups in your Azure AD, name space isolation provides logical isolation of resources used by them. It is useful in multi tenant scenarios where the same cluster is being used by different teams/departments to run their workloads. It is also useful in running say a dev, test and QA environment for organization in the same cluster. Combining AAD integration with name spaces allow users to login to their namespace using their Azure AD credentials AAD integration with AKS : The following Microsoft document will get you started  with AAD integration of AKS cluster.: https://docs.microsof