Add 'output' to be allowed for ignore_changes

[DevopsMercenary]

I was getting tired of terraform wanting to change the output on some azapi_resource that I have...

I added the ignore_changes to the azapi_resource

resource "azapi_resource" "daily-personal-scaling-plan" {

  type = "Microsoft.DesktopVirtualization/scalingPlans@2023-11-01-preview"

...


  lifecycle {
    ignore_changes = [
       tags, output
    ]
  }
}

This is terraform's response

Terraform will perform the following actions:

  # module.scaling-plan.azapi_resource.daily-personal-scaling-plan will be updated in-place
  ~ resource "azapi_resource" "daily-personal-scaling-plan" {
      ~ body                      = {
          ~ properties = {
              ~ exclusionTag       = "no-schedule" -> "no-avd-scaling"
                # (4 unchanged attributes hidden)
            }
        }
        id                        = "/subscription......."
        name                      = "c....."
      ~ output                    = {
          - id         = "........"
          - properties = {
              - hostPoolReferences = [
                  - {},
                ]
              - objectId           = "cae9bece-b576-4d0c-a61e-e97adbb1c194"
            }
          - type       = "Microsoft.DesktopVirtualization/scalingplans"
        } -> (known after apply)
        # (6 unchanged attributes hidden)
    }

Plan: 0 to add, 1 to change, 0 to destroy.
╷
│ Warning: Redundant ignore_changes element
│
│   on scaling-plan.tf line 4, in resource "azapi_resource" "daily-personal-scaling-plan":
│    4: resource "azapi_resource" "daily-personal-scaling-plan" {
│
│ Adding an attribute name to ignore_changes tells Terraform to ignore future
│ changes to the argument in configuration after the object has been created,
│ retaining the value originally configured.
│
│ The attribute output is decided by the provider alone and therefore there
│ can be no configured value to compare with. Including this attribute in
│ ignore_changes has no effect. Remove the attribute from ignore_changes to
│ quiet this warning.

It would be nice if the output could be ignored

[ms-henglu]

Hi @DevopsMercenary ,

Thank you for taking time to report this issue.

You can use disable_default_output = true to disable the default output feature if you're not using the output.
https://registry.terraform.io/providers/Azure/azapi/latest/docs#disable_default_output-1

If the output is static, please see this workaround: #661 (comment)