Azure Classroomnotes 28/Sep/2022

Virtual Machine Scale Sets Continued

  • Auto Scaling:
    • Auto scaling is a feature of VMSS where the instance count is set dynamically based on some metric.
    • Auto scaling will not scale out more than maximum number of instances set and will not scale in less than minimum number of instances.
  • In this case we have used Inbount NAT to login into VM
  • Lets configure auto scaling
  • Now lets artificially increase load on the vm using stress tool by executing this command in the VM
stress -v --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 20m
  • Wait for 5-10 minutes to see the increase in instance count
  • Kill the stress tool by executing ctrl + c and wait for another 5-10 mins you should witness the scale in.

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