What is Azure Spot VM?
Azure Spot VM is an Azure feature that allows you to take advantage of the unused capacity of the underlaying platform. If an host has some capacity compute left, these ‘spots’ will be filled with you Spot enabled virtual machines. When enabling this feature, you receive a discount up to 90 percent of the normal pricing in some cases.
Only pricing and eviction are the differences between Spot enabled virtual machines and the regular virtual machines. The compute, networking, storage, etc are exactly the same. The virtual machine can be attached to a virtual network or a load balancing solution, such as a internal/external load balancer. Also, the management capabilities are exactly the same and are done though the Azure Portal or with Infrastructure as Code (IaC) like Bicep, ARM, Powershell or Terraform.
Continue reading “Reduce costs with Azure Spot virtual machines”
A question I often get is ‘why should I use Windows Server Core edition’? This is difficult to manage and I do not like a server without a graphical interface.
The first thing I always tell you is, you DON’T HAVE to do anything, but my advice is to do it. Especially for a number of crucial server roles.
Some advantages of Windows Server Core edition at a glance:
Continue reading “Install and configure ADDS on Windows Server 2022 Core in Azure (Part 2)”
In Azure, you have the option to bring in your own licenses (Azure Hybrid Benefit). If you deploy a virtual machine using Azure Resource Manager (ARM) templates, this option is not enabled by default. Certainly for test environments, demos, but in many cases also production environments, you want to enable this option.
By adding the line below to your ARM template, the Azure Hybrid Benefit is enabled.
When you deploy a new virtual machine, for example Windows Server 2016/2019 or 2022, you’ll get the C: drive with the operating system, the D: drive for the TEMP storage (most of the VM types) and a DVD drive.
The DVD drive is not needed in some situations, for example on domain controllers. This type of servers you want to harden the security as much as possible. So, for domain controllers we’re deploying in our customer environments, we want to disable the DVD drive.
We run the following command when deploying new domain controllers in Azure.
## Disable DVD drive
Set-ItemProperty -Path HKLM:\SYSTEM\CurrentControlSet\Services\cdrom -Name Start -Value 4 -Type DWord
After this step, reboot the server and your DVD drive is gone!
Today I’ve deployed a new virtual machine within Azure using the Windows Server 2022 Azure Edition Preview Marketplace image. After running my Powershell script, I received an error:
’User failed validation to purchase resources. Error message: ‘You have not accepted the legal terms on this subscription: …..’
So, let’s take a look at the legal terms, also using Powershell. I’ve used a couple of variables.
$azureVmPublisherName = "MicrosoftWindowsServer"
$azureVmOffer = "microsoftserveroperatingsystems-previews"
$azureVmSkus = "windows-server-2022-azure-edition-preview"
$Version = "latest"
Get-AzMarketplaceTerms -Publisher $azureVmPublisherName -Product $azureVmOffer -Name $azureVmSkus
As you can see, the legal terms are not accepted yet!! With a small Powershell command, we can accept the legal terms.
Get-AzMarketplaceTerms -Publisher $azureVmPublisherName -Product $azureVmOffer -Name $azureVmSkus | Set-AzMarketplaceTerms -Accept
Now you’re good to go!!
Getting into scripting can be daunting. It’s easier to just use existing scripts found online, but if you choose this route you’ll quickly run into limitations. If you take the time to learn how to create your scripts, trust me, you’ll never look back!
Automating vSphere is particularly useful for countless applications and the best way is through PowerCLI – a version of PowerShell developed specifically for VMware. Learn how to develop your own PowerCLI scripts with this free 100+ page eBook from Altaro, PowerCLI: The Aspiring Automator’s Guide.
Written by VMware vExpert Xavier Avrillier, this eBook presents a use-case approach to learning how to automate tasks in vSphere environments using PowerCLI. We start by covering the basics of installation, set up, and an overview of PowerCLI terms. From there we move into scripting logic and script building with step-by-step instructions of truly useful custom scripts, including how to retrieve data on vSphere objects; display VM performance metrics; how to build HTML reports and schedule them; the basics on building functions; and more!
Stop looking at scripts online in envy because you wish you could build your own scripts.
Get started on your path to automation greatness – Download the eBook now!
Azure Accelerated Networking is a new option for Azure Infrastructure as a Service (IaaS) Virtual Machine (VM) on the NIC level providing several benefits by enabling single root I/O virtualization (SR-IOV) to a VM, greatly improving its networking performance. This high-performance path bypasses the host from the datapath, reducing latency, jitter, and CPU utilization, for use with the most demanding network workloads on supported VM types. You would typically use this feature with heavy workloads that need to send or receive data at high speed with reliable streaming and lower CPU utilization. It will enable speeds of up to 25Gbps per Virtual Machine. Best of all, it’s free!
How to Enable Accelerated Networking:
You can enable this feature during initial creation of the VM, on the networking tab, you will see “Enable Accelerated Networking”. If you are unable to enable, then it is not compatible on your chosen Azure VM size. If you need to enable this feature after VM creation you will require to do so through powershell as it is not yet supported in the portal. You can do this simply with the below commands after deallocating the Virtual Machine.
$nic = Get-AzureRmNetworkInterface -ResourceGroupName “YourResourceGroupName” -Name “YourNicName”
$nic.EnableAcceleratedNetworking = $true
$nic | Set-AzureRmNetworkInterface
Then proceed to start the Virtual Machine and Accelerated Networking will be enabled.