To provide better quality of service, the HTTP service provided by Message Queue for Apache RocketMQ will no longer support access from Elastic Compute Service (ECS) instances within the classic network after May 31, 2021.

If your application is deployed on an ECS instance within the classic network and access Message Queue for Apache RocketMQ over HTTP, migrate the application to an ECS instance in a virtual private cloud (VPC) as soon as possible. For more information, see Migrate an ECS instance from the classic network to a VPC.

If you have questions during the migration process, submit a ticket to contact Customer Services.