Know How Guide and Hands on Guide for AWS
Navigate to AWS Secrets Manager->Secrets
Then Run the secret-mgr-demo on EC2 or Lambda
aws secretsmanager create-secret --name MyTestDatabaseMasterSecret --description "Test secret for RDS" \
--kms-key-id {cmk-arn} --secret-string file://mycreds.json \
--region cn-north-1 --profile cn-north-1