[Enhancement]: aws_rds_cluster: Support for Aurora I/O-Optimized Storage

[aviau]

Description

Allow for enabling Aurora I/O-Optimized Storage as described in this article:

• https://aws.amazon.com/about-aws/whats-new/2023/05/amazon-aurora-i-o-optimized/

Affected Resource(s) and/or Data Source(s)

• aws_rds_cluster

Potential Terraform Configuration

No response

References

No response

Would you like to implement a fix?

No

[github-actions[bot]]

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[aviau]

Nvm, looks like this is already available as follows:

storage_type = "aurora-iopt1"

[bengotow]

Hey gang! This looks like it works great but for Aurora Serverless v2, changing the storage type to I/O optimized does not require instance replacement and Terraform thinks that it does. I modified my existing deployment manually in AWS and then updated Terraform to match because I didn't want to tear down and replace the databases.

Edit: The docs specify:

(Forces new for Multi-AZ DB clusters) Specifies the storage type to be associated with the DB cluster. For Aurora DB clusters, storage_type modifications can be done in-place.

I think that maybe these two checks are being done in the wrong order. For Aurora Serverless Multi-AZ DB Clusters, the "is aurora" rule might need to override "is multi AZ"? Just a random guess :-)

[github-actions[bot]]

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