Can not test the connection in AWS redshift as a target in AWS DMS

Question

I am trying to migrate data from AWS RDS MySQL to the AWS Redshift cluster by AWS DMS. I have created MySQL DB as a source and Redshift as a target. But the source endpoint is working correctly but whenever I try to test the target endpoint It gives this error "Test Endpoint failed: Application-Status: 1020912, Application-Message: Network error has occurred" . All my instances are in the same VPC and same security group, which is allowing all traffic.

Answer 1

This seems like a network issue. You need to check the security group outbound rules and ensure the DMS instance can send traffic to Redshift's IP.

There is a step-by-step troubleshooting guide available on AWS. You might want to follow those steps too:

https://aws.amazon.com/premiumsupport/knowledge-center/dms-endpoint-connectivity-failures/

Also, if you are new to DMS, also check out the following article:

https://medium.com/@nbqadri/cookbook-oracle-rds-migration-to-redshift-using-aws-data-migration-service-dms-eec4ebf88a68 thanks, Naveed