RDS: Cross-region automated backups

[cdobbyn]

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Description

In RDS it is possible to enable snapshots to be saved in another region besides the region the instance is in. This is helpful from a disaster recovery standpoint.

New or Affected Resource(s)

• aws_db_instance
• aws_rds_cluster

Potential Terraform Configuration

resource "aws_db_instance" "default" {
  ...
  backup_replication_region = "us-west-2"
  backup_replication_period = 7
  backup_replication_kms_key_id = "11111111-aaaa-1111-aaaa-111111111111"
  ...
}

References

• https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ReplicateBackups.html
• Release v1.36.2 aws/aws-sdk-go#3675

[bschaatsbergen]

I'll happily check this out and pick it up.

[bschaatsbergen]

@ewbankkit something we would want to treat as a new resource or make it part of the existing aws_db_instance and aws_rds_cluster resources?

https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ReplicateBackups.html#AutomatedBackups.Replicating.Enable

https://docs.aws.amazon.com/AmazonRDS/latest/APIReference/API_StartDBInstanceAutomatedBackupsReplication.html

Update: Working on a new resource
(Below shows how to replicate automated backups from eu-west-1 to eu-central-1)

resource "aws_db_instance_backup_replication" "default" {
  source_db_instance_arn = "arn:aws:rds:eu-west-1:837424938642:db:example-db"
  kms_key_id             = "arn:aws:kms:eu-central-1:837424938642:key/example-id"
}

provider "aws" {
  region = "eu-central-1"
}

[github-actions]

This functionality has been released in v4.9.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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 have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.