Azure Classroom notes 27/Nov/2023

Azure Virtual Machine Scale sets

• Orchestration Modes in Azure VMSS
  • Uniform:
    • All the vms will have same sizes
    • Supports zero down time deployments
  • Flexible
    • The sizes can be customized per vm
    • Still upgrade support is not added.
• Deployment options: (Upgrade Policy)
  • Manual
  • Automatic Upgrade
• Scaling Policies
  • Manual scaling
  • Metric Based Scaling: we define some metric and control scaling
  • Predictive Scaling: Maching learning algorithm does the scaling based on historical utilzation. This requires atleast 7 days of scaling information to be effective.

Lets create an Autoscaling group with auto upgrade policy

• Create a vmss
  
  
• Ensure Upgrade policy is automatic or rolling updates
  
• Now lets create a public load balancer
• For load balancer vmss is a backend pool
  
  
  
  
  
  
  
  
  
• Now we can access the application using load balancer ip address
  
• Now lets create a new image version in compute gallery
  
• Wait till new version is generated completely