Link to Kafka

MRS Kafka

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

**Table 1** MRS Kafka link parameters
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	kafka_link
Manager IP	Floating IP address of MRS Manager. Click Select next to the Manager IP text box to select an MRS cluster. CDM automatically fills in the authentication information.	-
Username	Username used for logging in to MRS Manager To create a data connection for an MRS security cluster, do not use user admin. The admin user is the default management page user and cannot be used as the authentication user of the security cluster. You can create an MRS user and set Username and Password to the username and password of the created MRS user when creating an MRS data connection. NOTE: If the CDM cluster version is 2.9.0 or later and the MRS cluster version is 3.1.0 or later, the created user must have the permissions of the Manager_viewer role to create links on CDM. To perform operations on databases, tables, and data of a component, you also need to add the user group permissions of the component to the user. If the CDM cluster version is earlier than 2.9.0 or the MRS cluster version is earlier than 3.1.0, the created user must have the permissions of Manager_administrator or System_administrator to create links on CDM. A user with only the Manager_tenant or Manager_auditor permission cannot create connections.	-
Password	Password used for logging in to MRS Manager	-
Authentication Method	Authentication method used for accessing MRS SIMPLE: for non-security mode KERBEROS: for security mode	Yes

Click Show Advanced Attributes, and then click Add to add configuration attributes of other clients. The name and value of each attribute must be configured. You can click Delete to delete no longer used attributes.

Apache Kafka

The Apache Kafka link is applicable to data migration of the third-party Hadoop in the local data center or ECS. You must use Direct Connect to connect to Hadoop in the local data center.

When connecting CDM to Kafka of Apache Hadoop, configure the parameters as described in Table 2.

**Table 2** Parameter description
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	kafka_link
Kafka broker	IP address and port number of the Kafka broker	192.168.1.1:9092