Link to MongoDB

This link is used to transfer data from a third-party cloud MongoDB service or MongoDB created in the on-premises data center or ECS to a big data platform.

When connecting CDM to an on-premises MongoDB database, 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** MongoDB 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	mongodb_link
Server List	List of MongoDB server addresses. Enter each address in the format of IP address or domain name of the database server:port number, and separate the entered addresses with semicolons (;).	192.168.0.1:7300;192.168.0.2:7301
Database Name	Name of the MongoDB database to be connected	DB_mongodb
Username	Username for logging in to MongoDB	cdm
Password	Password for logging in to MongoDB	-
Direct Connection	This mode applies to the scenario where the network of the primary node is normal but the network of the replica node is abnormal. NOTE: Only one IP address can be configured for the server list in direct connection mode. This mode applies to the scenario where the network of the primary node is normal but the network of the replica node is abnormal.	No
Link Attributes	Custom link attributes. The MongoDB attributes are supported. The unit is ms. The link attributes are as follows: socketTimeout: The default value is 60000. maxWaitTime: The default value is 10000. connectTimeout. The default value is 10000. serverSelectionTimeout: The default value is 5000.	socketTimeout=60000