If your application deployed on Enterprise Distributed Application Service (EDAS) is inaccessible due to a blocked server port, open the required port in the security group associated with the Elastic Compute Service (ECS) instance.
Symptom
Services deployed on EDAS are inaccessible, and the issue is caused by a blocked port on the server.
Cause
The security group associated with the ECS instance does not allow inbound traffic on the port that the service requires. For example, if your EDAS application uses port 12200 for Dubbo RPC communication and this port is blocked, services cannot communicate properly.
Solution
Add a security group rule to allow inbound traffic on the required port. For example, to allow traffic on port 12200:
Log on to the ECS console.
Find the ECS instance that hosts your EDAS application.
Add an inbound security group rule that allows traffic on the required port.
For detailed steps, see Add a security group rule.