Help Center/ Cloud Data Migration/ User Guide/ Creating a Link in a CDM Cluster/ Configuring Link Parameters/ DMS Kafka Link Parameters
Updated on 2024-10-24 GMT+08:00
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DMS Kafka Link Parameters

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).

-