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I added a tag to RDS Aurora DB Cluster but the stack fails with AWS Backup conflicts
RDS cluster xyz is associated with the following AwsBackupRecoveryPointArn: arn:aws:backup:us-east-1:000000000000:recovery-point:continuous:cluster-fwqvlm34vzrxkdelm7stdduw6q-f50fc296. The BackupRetentionPeriod can be blank, or you can use the current value, 10. For more details, see the AWS Backup documentation. (Service: Rds, Status Code: 400, Request ID: 123)"
AddTagsToResource should have been sufficient to add this tag however after looking in CloudTrail, the update handler invokes ModifyDbCluster containing backupRetentionPeriod with a default value of 1 . Example:
{
"eventVersion": "1.08",
"userIdentity": {
"type": "AssumedRole",
"principalId": "ABC12345:AWSCloudFormation",
"arn": "arn:aws:sts::000000000000:assumed-role/cdk-hnb659fds-cfn-exec-role-000000000000-us-east-1/AWSCloudFormation",
"accountId": "000000000000",
"accessKeyId": "ABC123",
"sessionContext": {
"sessionIssuer": {
"type": "Role",
"principalId": "ABC123",
"arn": "arn:aws:iam::000000000000:role/cdk-hnb659fds-cfn-exec-role-000000000000-us-east-1",
"accountId": "000000000000",
"userName": "cdk-hnb659fds-cfn-exec-role-000000000000-us-east-1"
},
"webIdFederationData": {},
"attributes": {
"creationDate": "2024-02-20T17:50:16Z",
"mfaAuthenticated": "false"
}
},
"invokedBy": "cloudformation.amazonaws.com"
},
"eventTime": "2024-02-20T17:50:16Z",
"eventSource": "rds.amazonaws.com",
"eventName": "ModifyDBCluster",
"awsRegion": "us-east-1",
"sourceIPAddress": "cloudformation.amazonaws.com",
"userAgent": "cloudformation.amazonaws.com",
"errorCode": "InvalidParameterValueException",
"errorMessage": "RDS cluster xyz is associated with the following AwsBackupRecoveryPointArn: arn:aws:backup:us-east-1:000000000000:recovery-point:continuous:cluster-fwqvlm34vzrxkdelm7stdduw6q-f50fc296. The BackupRetentionPeriod can be blank, or you can use the current value, 10. For more details, see the AWS Backup documentation.",
"requestParameters": {
"dBClusterIdentifier": "xyz",
"applyImmediately": true,
"backupRetentionPeriod": 1,
"dBClusterParameterGroupName": "default.aurora-postgresql15",
"cloudwatchLogsExportConfiguration": {
"enableLogTypes": [],
"disableLogTypes": []
},
"allowMajorVersionUpgrade": false,
"copyTagsToSnapshot": true,
"allowEngineModeChange": false
},
"responseElements": null,
"requestID": "123",
"eventID": "123",
"readOnly": false,
"eventType": "AwsApiCall",
"managementEvent": true,
"recipientAccountId": "000000000000",
"eventCategory": "Management"
}
I believe this mismatch is the cause of the issue.
The workaround is to add retention to the RDS cluster directly on the CDK app/CFN template:
I am using AWS Backup to manage RDS cluster backups and using CDK to manage Aurora DB cluster.
I added a tag to RDS Aurora DB Cluster but the stack fails with AWS Backup conflicts
AddTagsToResource should have been sufficient to add this tag however after looking in CloudTrail, the update handler invokes ModifyDbCluster containing backupRetentionPeriod with a default value of 1 . Example:
I believe this mismatch is the cause of the issue.
The workaround is to add retention to the RDS cluster directly on the CDK app/CFN template:
Can you take a look at this?
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