paullizer/azurecompute

Techniques, scripts, and workflows to manage Azure compute services.

Azure Compute

Processes to manage Azure Compute services.

Automated VM Vertical Scaling

Azure Alerts combined with two Azure Automation Runbooks using Webhooks provides a capability to vertically scale Virtual Machines based on CPU thresholds over a given window using a custom VM size table.

There are methods to do each of these tasks on their own. You could use the built-in Alert runbook to Scale Up or Scale Down a VM; however, the system sizes use marketplace sizing which may exceed cost parameters defined by your project (or your wallet).

Goal

Scale one or more monitored Virtual Machines up or down using a custom list of VM sizes.

Requirements

1. Azure Automation Account with Run As
2. Azure Runbook
3. Azure Virtual Machine(s)
4. Azure Alert

Resources

The following resources were consulted during the development of this capability.

• https://www.petri.com/automatically-resize-azure-vm
• https://www.apress.com/gp/blog/all-blog-posts/scale-up-azure-vms/15823864
• https://blog.ctglobalservices.com/azure/jgs/azure-automation-using-webhooks-part-1-input-data/
• https://docs.microsoft.com/en-us/azure/automation/automation-solution-vm-management-enable
• https://docs.microsoft.com/en-us/azure/azure-monitor/alerts/alerts-common-schema
• https://docs.microsoft.com/en-us/azure/azure-monitor/alerts/alerts-common-schema-definitions
• https://docs.microsoft.com/en-us/azure/azure-monitor/alerts/action-groups-logic-app
• https://docs.microsoft.com/en-us/azure/virtual-machines/windows/resize-vm#use-powershell-to-resize-a-vm-not-in-an-availability-set
• https://devblogs.microsoft.com/scripting/find-the-index-number-of-a-value-in-a-powershell-array/ https://docs.microsoft.com/en-in/azure/automation/automation-webhooks