Failure to migrate Postgres 9.6.6 snapshot to Aurora aws_rds_cluster

[steveh]

Terraform Version

Terraform v0.11.7
+ provider.aws v1.14.1

Affected Resource(s)

• aws_rds_cluster

Terraform Configuration Files

resource "aws_rds_cluster" "main" {
  engine         = "aurora-postgresql"
  engine_version = "9.6.6"
}

resource "aws_rds_cluster_instance" "main" {
  cluster_identifier  = "${aws_rds_cluster.main.id}"
  engine              = "aurora-postgresql"
  engine_version      = "9.6.6"
  snapshot_identifier = "arn:of:postgresql:9.6.6:snapshot"
}

Debug Output

2018-04-16T14:40:22.647+1200 [DEBUG] plugin.terraform-provider-aws_v1.14.1_x4: Action=RestoreDBClusterFromSnapshot&AvailabilityZones.AvailabilityZone.1=ap-southeast-2c&AvailabilityZones.AvailabilityZone.2=ap-southeast-2a&AvailabilityZones.AvailabilityZone.3=ap-southeast-2b&DBClusterIdentifier=telemetry-scale&DBSubnetGroupName=telemetry-scale&Engine=aurora-postgresql&Port=5432&SnapshotIdentifier=arn%3Aaws%3Ards%3Aap-southeast-2%3A561053517830%3Asnapshot%3Ards%3Atelemetry-production-2018-04-15-13-11&Tags=&Version=2014-10-31&VpcSecurityGroupIds.VpcSecurityGroupId.1=sg-f47a128d
2018-04-16T14:40:23.726+1200 [DEBUG] plugin.terraform-provider-aws_v1.14.1_x4: 2018/04/16 14:40:23 [DEBUG] [aws-sdk-go] DEBUG: Validate Response rds/RestoreDBClusterFromSnapshot failed, not retrying, error InvalidParameterCombination: Cannot upgrade from postgres 9.6.6 to aurora-postgresql 9.6.3.Specify a current active database version, the latest active minor version for postgres 9.6 is 9.6.6.

Expected Behavior

Terraform creates a new Aurora cluster from an RDS snapshot, which works through the AWS console.

Actual Behavior

Cannot upgrade from postgres 9.6.6 to aurora-postgresql 9.6.3.Specify a current active database version, the latest active minor version for postgres 9.6 is 9.6.6.

Steps to Reproduce

1. terraform apply

References

Seems likely related to GH-4139

The RestoreDBClusterFromSnapshot call does not include an EngineVersion parameter, so presumably uses the default of 9.6.3.

[bflad]

The fix has been merged into master and will release with v1.15.0 of the AWS provider, likely tomorrow.

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!