Terraform Core Version

1.5.7

AWS Provider Version

5.41.0

Affected Resource(s)

• aws_db_instance

Expected Behavior

Apply complete! Resources: 1 added, 0 changed, 0 destroyed.

Actual Behavior

Error: Not enough list items
│
│   with module.rds.aws_db_instance.this,
│   on ..\modules\rds\main.tf line 111, in resource "aws_db_instance" "this":
│  436:   domain_dns_ips         = ["10.10.10.10","10.10.10.10"]
│
│ Attribute domain_dns_ips requires 2 item minimum, but config has only 1 declared.

Relevant Error/Panic Output Snippet

No response

Terraform Configuration Files

  domain_fqdn                  = var.domain_fqdn
  domain_ou                     = var.domain_ou
  domain_auth_secret_arn = var.domain_auth_secret_arn
  domain_dns_ips              = ["10.10.10.10","10.10.10.10"]

Steps to Reproduce

• Create RDS MSSQL with Self-Managed Active directory providing single DNS IP for both primary and secondary field.

Debug Output

No response

Panic Output

No response

Important Factoids

No response

References

https://docs.aws.amazon.com/AmazonRDS/latest/APIReference/API_ModifyDBInstance.html#API_ModifyDBInstance_RequestParameters

DomainDnsIps.member.N
The IPv4 DNS IP addresses of your primary and secondary Active Directory domain controllers.

Constraints:
Two IP addresses must be provided. If there isn't a secondary domain controller, use the IP address of the primary domain controller for both entries in the list.

Would you like to implement a fix?

No