Azure Virtual Desktop: load balancer type

[marcvalk-git]

Is there an existing issue for this?

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Why does changing the load_balancer_type value from (i.e.) BreadthFirst to DepthFirst cause a creation of a new resource ?

Documentation states:
load_balancer_type - (Required) BreadthFirst load balancing distributes new user sessions across all available session hosts in the host pool. Possible values are BreadthFirst, DepthFirst and Persistent. Changing this forces a new resource to be created.

If you change this inside the portal, it just updates and does not create a new resource (as far as I can see)

Terraform Version

1.4.2

AzureRM Provider Version

3.48.0

Affected Resource(s)/Data Source(s)

azurerm_virtual_desktop_host_pool

Terraform Configuration Files

resource "azurerm_virtual_desktop_host_pool" "this" {
  name                     = "vdpool"
  resource_group_name      = "rg-001"
  location                 = "westeurope
  type                     = "Pooled"
  load_balancer_type       = "BreadthFirst"
  friendly_name            = "friendly name"
  description              = "description"
  validate_environment     = true
  maximum_sessions_allowed = 16
}

Debug Output/Panic Output

# azurerm_virtual_desktop_host_pool.this must be replaced
-/+ resource "azurerm_virtual_desktop_host_pool" "this" {
      ~ id                       = "/subscriptions/***/resourceGroups/rg-001/providers/Microsoft.DesktopVirtualization/hostPools/vdpool" -> (known after apply)
      ~ **load_balancer_type       = "BreadthFirst" -> "DepthFirst" # forces replacement**
        name                     = "vdpool"
        # (10 unchanged attributes hidden)
    }

Expected Behaviour

azurerm_virtual_desktop_host_pool.this must be replaced

-/+ resource "azurerm_virtual_desktop_host_pool" "this" {
~ id = "/subscriptions/***/resourceGroups/rg-001/providers/Microsoft.DesktopVirtualization/hostPools/vdpool" -> (known after apply)
~ load_balancer_type = "BreadthFirst" -> "DepthFirst" # forces replacement
name = "vdpool"

    # (10 unchanged attributes hidden)
}

Actual Behaviour

azurerm_virtual_desktop_host_pool.this must be replaced

-/+ resource "azurerm_virtual_desktop_host_pool" "this" {
~ id = "/subscriptions/***/resourceGroups/rg-001/providers/Microsoft.DesktopVirtualization/hostPools/vdpool" -> (known after apply)
~ load_balancer_type = "BreadthFirst" -> "DepthFirst" # forces replacement
name = "vdpool"
# (10 unchanged attributes hidden)
}

Steps to Reproduce

No response

Important Factoids

No response

References

No response

[sinbai]

@marcvalk-git thanks for opening this issue. This issue means that a change of load_balancer_type should not force the creation of a new resource, correct? If yes, this issue has been fixed by PR #20947 and released in v3.49.0 of the Terraform Provider. Could you upgrade the tf version to see if it has been resolved?

[marcvalk-git]

result of test with v.3.49.0:

azurerm_virtual_desktop_host_pool.avd_hostpool will be updated in-place 👍🏻

thank you.

[github-actions]

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