Change to iothub_endpoint_eventhub showed in the Plan but was not applied during the Apply

[GuyCarmy]

Is there an existing issue for this?

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Terraform Version

1.3.9

AzureRM Provider Version

3.55.0

Affected Resource(s)/Data Source(s)

azurerm_iothub_endpoint_eventhub

Terraform Configuration Files

resource "azurerm_eventhub_authorization_rule" "senders_xx" {
  name                = "yy"
  namespace_name      = local.eventhub_namespace_name
  eventhub_name       = azurerm_eventhub.eventhub_name.name
  resource_group_name = data.azurerm_resource_group.resource_group.name
  listen              = false
  send                = true
  manage              = false
}

resource "azurerm_iothub_endpoint_eventhub" "iothub_endpoint_eventhub_xx" {
  resource_group_name = data.azurerm_resource_group.resource_group.name
  iothub_id           = azurerm_iothub.iothub.id
  name                = "xx"

  connection_string = azurerm_eventhub_authorization_rule.senders_xx.primary_connection_string
}

Debug Output/Panic Output

-

Expected Behaviour

I have re-created the azurerm_eventhub_authorization_rule (it was removed in a previous apply), and the change of the connection string in the azurerm_iothub_endpoint_eventhub showed on the terraform plan stage. I was expecting it to be updated on apply.

on plan it was: 1 to add, 1 to change, 0 to destroy

Actual Behaviour

the change was not applied at all. on the apply it was: Apply complete! Resources: 1 added, 0 changed, 0 destroyed.

the execution is part of CI flow and the apply is of the output file of the plan, so there was no changes in between.

Steps to Reproduce

1. create a azurerm_eventhub_authorization_rule
2. create a azurerm_iothub_endpoint_eventhub using the connection string from above
3. recreate (change name for example which force replacement) the azurerm_eventhub_authorization_rule
4. the azurerm_iothub_endpoint_eventhub is not being updated.

Important Factoids

No response

References

No response

[ziyeqf]

Hi @GuyCarmy, thanks for opening the issue.

I tried with azureRM provider v3.97.1 and Terraform v1.7.4, while I can not reproduce the issue.Could you please upgrade your provider and Terraform to latest version, then give it another try?

Thanks!

[rcskosir]

Thanks for taking the time to submit this issue. @ziyeqf was unable to reproduce this behavior. We’re going to close this issue for now, but if you run into this again with the latest Terraform and Provider versions, please feel free to open a new issue.