You can use this rule to monitor the effectiveness of Elastic IP Address.
Trigger type: configuration change
Request parameters: none
Troubleshooting: Check whether your Elastic IP Address is bound to an instance. If it is not bound to an instance, this rule may be nonconforming. Bind a Elastic IP Address to an instance. The instance types include NAT Gateway, ECS instances, SLB instances, and secondary ENIs. Config detects your changes within 10 minutes and automatically starts the audit.
Console operation: go to the Elastic IP Address console and choose Operations> bind.
API operation: call AssociateEipAddress to bind a Elastic IP Address to a cloud product instance in the same region.