Terraform module error: InvalidParameterCombination

aws rds delete-db-instance --db-instance-identifier your_database-1

An error occurred (InvalidParameterCombination) when calling the DeleteDBInstance operation: FinalDBSnapshotIdentifier is required unless SkipFinalSnapshot is specified.

Max storage size must be greater than storage size

╷
│ Error: Error creating DB Instance: InvalidParameterCombination: Max storage size must be greater than storage size
│ 	status code: 400, request id: cf03ba21-20f6-4b55-b6ec-e56a89dbcbb1
│
│   with module.db.module.db_instance.aws_db_instance.this[0],
│   on ../../modules/db_instance/main.tf line 26, in resource "aws_db_instance" "this":
│   26: resource "aws_db_instance" "this" {
│
╵
Related: max_allocated_storage

A MonitoringRoleARN value is required if you specify a MonitoringInterval value

╷
│ Error: Error creating DB Instance: InvalidParameterCombination: A MonitoringRoleARN value is required if you specify a MonitoringInterval value other than 0.
│ 	status code: 400, request id: e2d2a148-70c8-44ab-a73e-6ca13d63ad7c
│
│   with module.db.module.db_instance.aws_db_instance.this[0],
│   on ../../modules/db_instance/main.tf line 26, in resource "aws_db_instance" "this":
│   26: resource "aws_db_instance" "this" {
│
╵

Cannot find version 13.1 for aurora-postgresql

╷
│ Error: Error creating DB Instance: InvalidParameterCombination: Cannot find version 13.1 for aurora-postgresql
│ 	status code: 400, request id: ca8f076c-6686-4cbd-a6f7-f2c1a2743074
│
│   with module.db_aurora.module.db_instance.aws_db_instance.this[0],
│   on ../../modules/db_instance/main.tf line 26, in resource "aws_db_instance" "this":
│   26: resource "aws_db_instance" "this" {
│
╵
Solution: dBParameterGroupFamily
 aws rds describe-db-engine-versions --output text | grep DBENGINEVERSIONS  | grep "Aurora PostgreSQL"

Cannot upgrade aurora-postgresql from 11.13 to 11.12

╷
│ Error: Failed to modify RDS Cluster (aurora-postgresql): InvalidParameterCombination: Cannot upgrade aurora-postgresql from 11.13 to 11.12
│ 	status code: 400, request id: yyyy9-9efa-4e8d-9a1d-xxxx
│ 
│   with aws_rds_cluster.this[0],
│   on main.tf line 47, in resource "aws_rds_cluster" "this":
│   47: resource "aws_rds_cluster" "this" {
│ 
╵

RDS does not support creating a DB instance with the following combination:

│ Error: Error creating DB Instance: InvalidParameterCombination: RDS does not support creating a DB instance with the following combination: 
DBInstanceClass=db.t3.micro, Engine=aurora-postgresql, EngineVersion=13.7, LicenseModel=postgresql-license. For supported combinations of instance class and database engine version, see the documentation.
│ 	status code: 400, request id: b7614447-937e-4da9-b51e-bed06b1ca07a
│
│   with module.db_aurora.module.db_instance.aws_db_instance.this[0],
│   on ../../modules/db_instance/main.tf line 26, in resource "aws_db_instance" "this":
│   26: resource "aws_db_instance" "this" {
│
╵
Solution: select and instance class supported by aurora-postgresql, db.t3.medium minimum instead of db.t3.micro

The DB instance and EC2 security group are in different VPCs

╷
│ Error: error creating RDS cluster: InvalidParameterCombination: The DB instance and EC2 security group are in different VPCs. The DB instance is in vpc-52c0cc2a and the EC2 security group is in vpc-0d2733220232865db
│       status code: 400, request id: 5460e4ab-9b51-412a-8e1c-13657632f052
│
│   with module.db.aws_rds_cluster.this[0],
│   on .terraform/modules/yourfile.tf line 46, in resource "aws_rds_cluster" "this":
│   46: resource "aws_rds_cluster" "this" {
│

Error: Error creating DB Instance: Invalid iops to storage (GB) ratio

╷
│ Error: Error creating DB Instance: InvalidParameterCombination: Invalid iops to storage (GB) ratio for engine name aurora-postgresql and storage type aurora: 0.0000
│ 	status code: 400, request id: 97942c23-5208-4f81-9072-5bb0011ea823
│
│   with module.db_aurora.module.db_instance.aws_db_instance.this[0],
│   on ../../modules/db_instance/main.tf line 26, in resource "aws_db_instance" "this":
│   26: resource "aws_db_instance" "this" {
│
╵

Related

• InvalidVPCNetworkStateFault
• max_allocated_storage
• InvalidParameterValue

See also

• aws_db_instance, instance_class, allocated_storage, InvalidParameterCombination , backup_retention_period, publicly_accessible
• AWS RDS: AWS::RDS, aws rds [ create-db-instance | create-db-instance-read-replica | describe-db-instances | modify-db-instance | modify-db-cluster | create-db-subnet-group | delete-db-instance | create-db-snapshot | aws rds create-db-parameter-group ], AllocatedStorage, FreeStorageSpace
• AWS VPC, AWS default VPC, AWS VPC sharing, AWS subnets, Amazon VPC NAT gateway, Amazon VPN internet gateway, VPC Flow Logs, aws ec2 create-vpc, aws ec2 describe-vpcs, NACL, VPC Scenarios, AWS VPC endpoint, AWS ClassicLink, VPC peering, Reachability Analyzer, AWS internet gateway, VPC Lattice, vpce.amazonaws.com