E3025: 'db.m5.large' is not one of [a large list of instance types] in any region

[rix0rrr]

    aws-rds/lib/cluster.ts:1920:22
    WARNING DBInstanceClass: 'db.m5.large' is not one of ['db.r3.2xlarge', 'db.r3.4xlarge', 'db.r3.8xlarge', 'db.r3.large', 'db.r3.xlarge', 'db.r4.16xlarge', 'db.r4.2xlarge', 'db.r4.4xlarge', 'db.r4.8xlarge', 'db.r4.large', 'db.r4.xlarge', 'db.r5.12xlarge', 'db.r5.16xlarge', 'db.r5.24xlarge', 'db.r5.2xlarge', 'db.r5.4xlarge', 'db.r5.8xlarge', 'db.r5.large', 'db.r5.xlarge', 'db.r6g.12xlarge', 'db.r6g.16xlarge', 'db.r6g.2xlarge', 'db.r6g.4xlarge', 'db.r6g.8xlarge', 'db.r6g.large', 'db.r6g.xlarge', 'db.r6i.12xlarge', 'db.r6i.16xlarge', 'db.r6i.24xlarge', 'db.r6i.2xlarge', 'db.r6i.32xlarge', 'db.r6i.4xlarge', 'db.r6i.8xlarge', 'db.r6i.large', 'db.r6i.xlarge', 'db.r7g.12xlarge', 'db.r7g.16xlarge', 'db.r7g.2xlarge', 'db.r7g.4xlarge', 'db.r7g.8xlarge', 'db.r7g.large', 'db.r7g.xlarge', 'db.r7i.12xlarge', 'db.r7i.16xlarge', 'db.r7i.24xlarge', 'db.r7i.2xlarge', 'db.r7i.48xlarge', 'db.r7i.4xlarge', 'db.r7i.8xlarge', 'db.r7i.large', 'db.r7i.xlarge', 'db.r8g.12xlarge', 'db.r8g.16xlarge', 'db.r8g.24xlarge', 'db.r8g.2xlarge', 'db.r8g.48xlarge', 'db.r8g.4xlarge', 'db.r8g.8xlarge', 'db.r8g.large', 'db.r8g.xlarge', 'db.serverless', 'db.t2.medium', 'db.t2.small', 'db.t3.large', 'db.t3.medium', 'db.t3.small', 'db.t4g.large', 'db.t4g.medium', 'db.x2g.12xlarge', 'db.x2g.16xlarge', 'db.x2g.2xlarge', 'db.x2g.4xlarge', 'db.x2g.8xlarge', 'db.x2g.large', 'db.x2g.xlarge'] in any region (CloudFormation Validate)
       Default/Cluster/Instance1 (ClusterInstance1448F06E4) constructs.Construct
       Acknowledge with 'CloudFormation-Validate::E3025'

Sure, it's not in that list, but db.m5.large seems to be a valid instance type?

https://aws.amazon.com/rds/instance-types/

[satyakigh]

db.m5.large is supported in standard RDS (MySQL, PostgreSQL, MariaDB, etc.) but this looks like aurora-mysql. Aurora only suports memory-optimized, burstable, X-family, and serverless classes, not general purpose instances. https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.SupportAurora.html

[rix0rrr]

I see. Any way we can make that error message more specific then? Because the error message isn't telling me "you can't use this instance class with this database type", it's just telling me "this is in invalid instance class" and that's confusing.