🎩✨ 4 Epic Ways to Auto-Join New VMs to Active Directory (Like a Boss) using vRealize Automation/Orchestrator

So, you’re creating new virtual machines like a pro… but they’re not joining your Active Directory yet?

That’s like inviting friends to a party but forgetting to tell them where it is! 🎉

No worries — let’s fix that.

Here are 4 easy ways to make your VMs join Active Directory automatically. Each way has its own perks and is good for different situations. Whether you want a simple no-code setup or like to get your hands dirty with some scripting, I’ll guide you through it step-by-step.

🧩 The Magic Plug: vRA Active Directory Plugin

Imagine the vRA Active Directory Plugin as a super helpful party planner for your VMs. You set it up once — just one time! — and from then on, it takes care of sending the invite to every new VM, so they can automatically join the Active Directory party. No coding or complicated steps needed! 🎉

Top Reasons to Prefer This Road Journey of the vRA AD Plugin

• One-and-done setup: Configure the plugin just once, and it’ll work for every VM you create after that. No need to stop and repeat the steps!
• No scripts needed: Just simple clicks and settings — no coding headaches on this smooth ride.
• Automatic invites: Every new VM gets its VIP invite and joins the AD domain all by itself. No hand-holding required!
• Keeps things secure: Uses special “service accounts” behind the scenes, so only authorized VMs get through the gates.

Speed Breakers on This Beauty Road:

• The “guest list” (service account permissions) needs to be kept up-to-date. If permissions change, new VMs might get stuck at the door.
• Network or permission hiccups can cause bumps along the way, so make sure everything’s properly set before you hit the gas.

Steps to enjoy this beauty road :

Let’s split this task into simple steps:

Step 1 : Create Active Directory integration in the cloud assembly infrastructure.

• Login to vRA -> Cloud Assembly -> Infrastructure -> Connections(Left hand side pane) -> Integrations -> Add Integration -> Select Active Directory

• Click Validate — if everything’s correct, vRA will give you the green light ✅
• Hit Add/Save to finalize the integration.

✅ Congrats! Now vRA knows where the party is. 🎉

Step 2 : How the virtual machine going to be deployed knows about the AD integration??

It’s simple.. We will maintain this information in the Cloud Templates..

Let me give two versions of pizza creation process for you. One is Build your own pizza and another one is Chef’s Special.

Version 1:

This version lets your users pick the OU during deployment — just like choosing their own pizza toppings!

• When a user requests a VM, they see an input box asking, “Which OU should your VM join?”
• They type or select the OU that fits their needs
• The blueprint uses that input and tells the VM to join that OU automatically

Great for teams who want flexibility and control

Version 2:

Here, you set the OU once in the blueprint properties — like offering your chef’s special pizza on the menu.

• The OU is fixed in the blueprint code or property group — no input needed from users
• Every VM deployed from this blueprint automatically goes to the same OU

Perfect if you want to keep things simple and consistent

Step 3: Publish & Release Your Cloud Template as a Catalog Item

• Just like putting your pizza on the app menu for people to order:
• Publish the blueprint version(s) you want
• Release them as catalog items

Users pick their pizza (VM) from the menu, with options (if applicable) to select OU or just order the chef’s special

🧬 The Classic Old-School Move: vSphere Customization Specs

This is the OG – When I say OG, I’m not talking Original Gangster. I mean this is an Old Gold move!

Remember how we learned to ride bikes back in the 80s and 90s? No training wheels, no shortcuts — just someone running beside you, helping you balance, you falling a few times, then finally cruising like a champ.

VM Customization Specs work the same way. You set it up once — telling your VM how to join the Active Directory domain — and then every VM you create after that just knows what to do. No extra steps, no surprises.

Why it’s great:

• One-time setup that works for every Windows VM you spin up.
• Simple and rock-solid reliable — just like your trusty old bike.
• No scripts, no fancy coding — straightforward and easy.

Heads up:

• It’s designed for Windows VMs — Linux will need other methods.
• Changing specs is possible, but think of it like learning a new bike trick — it might take some practice.

Steps to Follow OG:

• Get the Customization Specification name from the vCenter as below:

• Provide the customization specification name in the cloud template. this one will help your VM to join the domain(creates the active directory computer object).

☁️ The Cloud-Native Ninja: Cloud-Init / Cloudbase-Init

Meet the hipster of VM domain joining — the cool kid who likes to run its own scripts as soon as it wakes up. Cloud-Init (for Linux) and Cloudbase-Init (for Windows) give you total control to customize your VM’s first day on the job.

Think of it like handing your VM a secret treasure map before it even opens its eyes. “Here’s what to do, here’s where to go, and hey — join this Active Directory domain while you’re at it!” It’s flexible, powerful, and ready to take on anything you throw at it.

Benefits:

• Full control: You can script everything from AD joining to installing updates and configuring apps — your VM obeys your every command.
• Cross-platform: Whether it’s Linux or Windows, this method has your back. No VM left behind!
• Super flexible: Want to customize more than just domain join? Go for it. Cloud-Init is your all-in-one morning checklist.

Headsup:

• YAML files are picky. One misplaced space or colon, and your VM might just ignore the whole script. Think of it as poetry for computers — precise formatting is key.
• Network and DNS gotta be solid. If your VM can’t find the domain controller, it’s like trying to call a friend with a dead phone — no connection, no party.
• Debugging takes patience. Logs inside the VM will be your best friends if things go sideways — don’t give up!

🤓 The Automation Overlord: vRealize Orchestrator (vRO) Workflows

vRA won the toss and chose to bat first — meaning it’s ready to deploy your VMs. But when the situation demands, it calls in the vice-captain and star batsman — vRO — to the crease (via subscription).

vRO takes the ball — your VM info passed as input properties through the subscription event — and plays the perfect shots, using its Active Directory plugin to make sure every VM joins the AD domain just right, moving to the proper OU like a pro cover drive.

Here’s the game plan:

• vRA creates the VM from your cloud template.
• An event triggers the vRO workflow — like calling your star batsman to the crease.
• vRO uses the Active Directory plugin to create or move the VM’s computer account into the right OU.
• The VM joins the domain smoothly, ready to play its part in your IT environment.
• You get the win — automatic, seamless AD integration, no manual moves needed.

Why this method rocks the pitch:

• Gives you full control and flexibility over how your VMs join Active Directory.
• Perfect for complex plays — like adding the VM to specific AD groups or running extra custom steps.
• Ideal for teams who love automation and scripting — keeping things smooth and consistent.

Heads up before you step up to bat:

• You’ll need some basic scripting skills and understanding of vRO workflows.
• Debugging can sometimes feel like facing a tricky bowler — but patience and practice will help you win the match!

🏏 Match Playbook: Step-by-Step Guide to Automate AD Join with vRO & vRA

Step 1: Create Your vRO Workflow

• Open vRealize Orchestrator Client.
• Create an Action with the name “createComputer” or “moveComputer” and write the code inside it.
• Create a new workflow — name it something like “Join VM to Active Directory”.
• Add an input parameter as inputProperties(type as Properties) to accept VM properties. These will come from vRA’s event subscription.
• Use the vRO Active Directory plugin
• Drag and drop the “createComputer” or “moveComputer” actions into your workflow.
• Pass the necessary inputs if required.
• Add any additional steps you want, like adding the VM to AD groups or sending notifications.
• Save and test your workflow inside vRO to make sure it runs without errors.

Check the process below to understand how to write the code in actions

Step 2: Create a Subscription in vRA

• Go to your vRealize Automation console.
• Navigate to Cloud Assembly -> Extensibility -> Subscriptions.
• Create a new subscription on the “Compute Post Provision” event — this means every time a new VM is created, your workflow will trigger.
• Select the vRO workflow you created earlier – Join Vm to Active Directory.
• Make sure subscription is enable.

Make sure you create a basic cloud template(catalog form) to deploy the VM as below:

Boom…. Your VM deployment along with Active Directory Integration is ready.

Bonus:

So, you’re new to vRealize Orchestrator (vRO) coding? Perfect — you’re in the right place, and I’ve got your back. We’re going to walk through it together.

In this part, we’ll focus on how to integrate with Active Directory using vRO. If terms like Inventory and API Explorer sound unfamiliar, no worries! I’ve already covered those in earlier blog posts — feel free to check them out if you need a refresher.

Now, back to the task at hand.
We’ll begin by opening the API Explorer inside vRO — this is where all the magic begins. Think of it as your toolbox: it shows you everything the AD plugin can do.

Login to vRA -> Orchestrator -> API Explorer(left pane) -> Expand Plugins -> Expand AD -> expand Objects. it will end up with below results as shown in picture.

Explore the Objects which suits to our operation. If you go through “AD_OrganizationalUnit”. In that object, you will find the function “createComputer” which is the exact function we need to perform in our workflow now.

If you look into the function, it is expecting 3 inputs – computerName, domainName, computerNamePreWin2k..

Even before that to get this function. we need AD OrganizationalUnit Object. Let’s find the ways to fetch thie AD_OrganizationalUnit object.

If you look into ActiveDirectory object, there you can find “searchExactMatch”. So, you can fetch the OrganizationalUnit Object with this function.

searchExactMatch is also expecting 3-4 inputs : type, objectName, limit, adServer.

Let’s write the code as below:

--- inputs for my action - resourceName, ouName, domainName

const adHost = Server.findAllForType("AD:AdHost", "xpath:defaultDomain=" + "'" + domainName + "'")[0];
if (!adHost) {
throw new Error("No AD Host found with Name: " + domainName + "cannot be found!");
}
var ou = ActiveDirectory.search("OrganizationalUnit",ouName,adHost)[0];
if(!ou) {
throw new Error("no OU with name : " + ouName)
}
return ou.createComputer(resourceName,domainName);