Change Data Capture (CDC) users
Change Data Capture (CDC) is a new MaxScale protocol that allows compatible clients to authenticate and register for Change Data Capture events. The new protocol must be use in conjunction with AVRO router which currently converts MySQL binlog events into AVRO records. Clients connect to CDC listener and authenticate using credentials provided in a format described in the CDC Protocol documentation.
Note: If no users are found in that file or if it doesn't exist, the only available user will be the service user:
[avro-service] type=service router=avrorouter source=replication-service user=cdc_user password=cdc_password
Creating new CDC users
Starting with MaxScale 2.1, users can also be created through MaxAdmin:
maxadmin call command cdc add_user <service> <name> <password>
bash$ cdc_users.py [-h] USER PASSWORD
The output of this command should be appended to the cdcusers file at
bash$ cdc_users.py user1 pass1 >> /var/lib/maxscale/avro-service/cdcusers
Users can be deleted by removing the related rows in 'cdcusers' file. For more details on the format of the cdcusers file, read the CDC Protocol documentation.