After creating a CDM cluster, you can bind an EIP to or unbind an EIP from the cluster.
If CDM needs to access a local or Internet data source, or a cloud service in another VPC, bind an EIP to the CDM cluster or use a NAT gateway to enable the CDM cluster to share the EIP with ECSs to access the Internet.
If SSL encryption is configured for the access channel of a local data source, CDM cannot connect to the data source using the EIP.