Azure Classroom notes 24/Nov/2023

Generation I vs Generation II vms

• Generation I is older version of VMS
• Generation II supports new generation with feature support such as
  • larger vm sizes
  • uefi and vTPM (Secured Boot) (Trusted => OS Secured)
  • Resizing Disks on the fly
  • Faster OS boot times

VM Image Creation

• Azure VM Images are of two types
  • Generalized:
    • These images allows to set credentials while creating virtual machine
  • Specialized:
    • These image have a built in user and will not allow you to set credentials during creation.
• Azure VM Images can be hosted by two ways
  • Managed Image
  • Azure Compute Gallery (Supports versioning)

Lets create our first vm image

• Create a ubuntu vm with apache with php installed
  
• Create a resource group called as resuableimages
• Navigate to the vm & then click on capture button
  
  
• Lets create a gallery called as learning
  
  
• Every VM Image in Azure is identified by 4 parameters
  • publisher: referes to an organization publishing images
  • offer: This is the offering from the organization
  • sku: This is store keep unit
  • version: version of the release
• Now lets create a vm definition with our details in publisher, offer and sku
  
  
• VM Image creation happens in 3 steps
  • stop the vm
  • Generalize the vm (Remove user credentials)
  • Create a snapshot of disk with additional metadata to create a vm image