azurerm_virtual_machine_scale_set does not support autoscale rules

[srjennings]

Terraform Version

Terraform v0.11.7

• provider.azurerm v1.3.2
• provider.random v1.2.0

Affected Resource(s)

• azurerm_virtual_machine_scale_set

Expected Behavior

Terraform Azure Scale Set resource should support auto-scaling capability.
This is the primary use case for Azure Scale Sets.

Actual Behavior

azurerm_virtual_machine_scale_set does not support autoscale rules.

Important Factoids

See the following JSON code as example for deploying such capability in Azure (as written in referenced material):

Create a profile;

{
"type": "Microsoft.insights/autoscalesettings",
"name": "Autoscale",
"apiVersion": "2014-04-01",
"location": "[variables('location')]",
"scale": null,
"properties": {
  "profiles": [
    {
      "name": "Autoscale by percentage based on CPU usage",
      "capacity": {
        "minimum": "2",
        "maximum": "10",
        "default": "2"
      }
    }
  ]
}

Define a rule to autoscale out;

"rules": [
  {
    "metricTrigger": {
      "metricName": "Percentage CPU",
      "metricNamespace": "",
      "metricResourceUri": "[concat('/subscriptions/',subscription().subscriptionId, '/resourceGroups/',  resourceGroup().name, '/providers/Microsoft.Compute/virtualMachineScaleSets/', variables('vmssName'))]",
      "metricResourceLocation": "[variables('location')]",
      "timeGrain": "PT1M",
      "statistic": "Average",
      "timeWindow": "PT5M",
      "timeAggregation": "Average",
      "operator": "GreaterThan",
      "threshold": 70
    },
    "scaleAction": {
      "direction": "Increase",
      "type": "ChangeCount",
      "value": "3",
      "cooldown": "PT5M"
    }
  }
]

References

Define an autoscale profile
Define a rule to autoscale out
Full JSON example of scale set with autoscale rules on Azure github

[tombuildsstuff]

hey @deyjcode

Thanks for opening this issue :)

Support for Auto Scale Settings has previously been requested in #50 - rather than having multiple issues tracking the same feature request I'm going to close this issue in favour of #50.

Thanks!

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. If you feel I made an error 🤖 🙉 , please reach out to my human friends 👉 hashibot-feedback@hashicorp.com. Thanks!