Link to DMS Kafka

When connecting CDM to DMS Kafka, configure the parameters as described in Table 1.

Do not change the password or user when the job is running. If you do so, the password will not take effect immediately and the job will fail.

**Table 1** DMS Kafka link parameter
Parameter	Description	Example Value
Name	Link name, which should be defined based on the data source type, so it is easier to remember what the link is for	dms_link
Service Type	DMS Kafka edition. Currently, only the Platinum edition is available.	Platinum
Kafka Broker	Address of a Kafka premium instance. The format is host:port.	-
Kafka SASL_SSL	Whether to enable SSL authentication when a client connects to a Kafka premium instance. This function must be enabled if the SASL_SSL security protocol is enabled for the link to the DMS Kafka instance. If Kafka SASL_SSL is enabled, data will be encrypted before transmission for higher security, but performance will suffer. NOTE: When SSL authentication is enabled, Kafka continuously parses the Kafka broker connection address as a domain name, which undermines performance. You are advised to add the self-mapping of the broker connection address to the /etc/hosts file on the ECS corresponding to the CDM cluster (search for the ECS based on the cluster IP address) so that the client can quickly resolve the broker of the instance. For example, if the Kafka broker address is 10.154.48.120, add the following self-mapping to the /etc/hosts file: 10.154.48.120 10.154.48.120	Yes
Username	Username for connecting to DMS Kafka. This parameter is displayed when Kafka SASL_SSL is enabled.	-
Password	Password for connecting to DMS Kafka. This parameter is displayed when Kafka SASL_SSL is enabled.	-
Kafka Properties	If a security protocol is enabled for the link to the DMS Kafka instance, you must add a data encryption attribute, and set the attribute name to security.protocol and value to SASL_SSL or SASL_PLAINTEXT based on the security protocol of the Kafka instance. If SASL authentication is enabled for the link to the DMS Kafka instance, you must add an authentication mode attribute, and set the attribute name to sasl.mechanism and value to PLAIN or SCRAM-SHA-512 based on the SASL authentication mechanism configured for the Kafka instance (set the value to either PLAIN or SCRAM-SHA-512 if both are supported).	-