VMSS contd..
- Scaling VMs based on metrics
- Lets configure Azure VMSS to start with 1 VMs
- Increase the VMs by 1 when the CPU utilization is greater than 80% for last 5 mins and decrease the VMs by 1 when the CPU CPU Utilization is less than 50% for last 5 mins.
- For the purpose of understanding the autoscaling, in this example i’m enabling public ip address but ideally vmss will be without public ip
- Now enable auto scaling and create vmss
- View the instances
- Lets login and create artifical cpu load on this vm
- As discussed over in the session, the number of vms will be increased or decreases based on the configured rule.
- In ideal scenarios, we will be creating a load balancer with public ip to access the application running in vmss
- The VMSS will be the backend for the loadbalancer.
- Generally we will have two kinds of loadbalancing based on ip
- public or external load balancer
- private or internal load balancer
- Next Steps:
- Creating a VMSS with external and internal load balancer and application gateway.
- How to perform maintenance (OS upgrades/extension upgrades)
