DNS total string length needs to be updated from 1024 to 4096

[abhinavkumar7]

Is there an existing issue for this?

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Terraform Version

1.6.5

AzureRM Provider Version

3.83.0

Affected Resource(s)/Data Source(s)

azurerm_dns_txt_record

Terraform Configuration Files

resource "azurerm_dns_txt_record" "spf_example_com" {
  name                = "spf"
  zone_name           = data.azurerm_dns_zone.my_zone.name
  resource_group_name = data.azurerm_dns_zone.my_zone.resource_group_name
  ttl                 = 3600
  record {
    value = "v=spf1..........." #More than 1024 characters here
  }
}

Debug Output/Panic Output

Error: expected length of record.0.value to be in the range (1 - 1024)

Expected Behaviour

The Terraform configuration for Azure TXT record with more than 1024 characters in value should not have given error.

Actual Behaviour

Following error is generated, when the string length for Azure DNS TXT record goes beyond 1024:

Error: expected length of record.0.value to be in the range (1 - 1024)

Steps to Reproduce

1.) Add the config suggested in this Issue.
2.) Run Terraform Validate.
3.) Terraform throws error.

Important Factoids

No response

References

The multiple strings in a DNS record shouldn't be confused with the multiple TXT records in a TXT record set. A TXT record set can contain multiple records, each of which can contain multiple strings. Azure DNS supports a total string length of up to 4096 characters* in each TXT record set (across all records combined).

[mikemadeja]

Hello, I created a pull request updated it to 4096. I think it should be ok even if National clouds are still set at 1024. I assume the response to going over that limit would respond with that but I can't test it.

[github-actions]

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