VMware vSphere

How to Create VM Customization Specification

vCenter Server comes with the very nice feature called VM Customization Specification which is very useful in everyday when you are deploying the virtual machines from templates. VM Customization Specification allows you to configure various guest operating system settings so that once you deploy VM with customization specification you can directly use the virtual machines for your use instead of performing the basic guest configurations.

You can use this VM Customization Specification in Windows as well as Linux server’s but it requires the VMware Tools should be installed in the template.

VM Customization Specification allows you to configure below settings:

  • Generate new SID
  • Set the VM Name
  • Assign license
  • Set local Administrator password
  • Set Timezone
  • Configure Network
  • Join Domain

Some of the options will not be available in case of Linux OS.

So let’s see How to configure VM Customization Specification:

Step 1:
Login to vCenter Server.
Select VM Customization Specifications.

vm customization specification

Step 2:
Click on New to create new VM Customization Specification.

vm customization specification

Step 3:
Provide the Name & Description for VM Customization Specification.
Choose the Guest OS Type.
You can also use SysPrep file if you have in your environment.
Click Next to continue.

vm customization specification

Step 4:
Provide the Owner Name & Organization for VM Guest OS.
Click Next to continue.

vm customization specification

Step 5:
Computer name here you can either use the virtual machine name or ask the user to provide the name when virtual machine is being deployed.
You can also set the Name with appended numbers so that VM will be deployed in the sequence.
Click Next to continue.

vm customization specification

Step 6:
If you are using Windows Server then you can provide the license to active the Guest OS.
Click Next to continue.

vm customization specification

Step 7:
Set the local administrator password for the guest operating system.
Click Next to continue.

vm customization specification

Step 8:
Set the time zone for the guest operating system.
Click Next to continue.

vm customization specification

Step 9:
If you want to run any commands after the guest operating system is installed & user logs on then you can specify it here.
Click Next to continue.

vm customization specification

Step 10:
Configure the network for the guest operating system. You can either use the standard DHCP or you can configure manually custom networking settings.
Click Next to continue.

vm customization specification

Step 11:
If you want your guest os to join domain then you can directly configure domain details here.
Click Next to continue.

vm customization specification

Step 12:
Review the settings & configuration you have done & click Finish to create VM Customization specification.

vm customization specification

 

You can see that VM Customization specification is created successfully.
If you want to edit or export the VM Customization settings then you can perform it here.

vm customization specification

 

Now let’s see How to use VM Customization Specification during VM Deployment.
When you deploy the VM from template.
In the Clone option you will see “Customize the operating system”
Select the box & click Next to continue.

vm customization specification

Here you will see create VM Customization Specification.
So you can select VM Customization Specification & deploy VM using it.

vm customization specification

 

That’s it, Using this way you can easily create VM Customization Specification & use it during your VM deployment so you will have your VM completely ready after the deployment.

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Mayur Parmar

Hi I am Mayur Parmar. Independent Author & Founder of Mastering VMware. I am working in IT industry for more than 4 Years with knowledge of VMware , Microsoft Server's, Linux Server's.
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