The first database to create is the primary. It will store all administration data that you will create later (tenants, DB connectors, properties etc…).
The primary DB will be using a MYSQL connector.
Make sure to activate Primary DB and Init DB check boxes when you create the connector.
Once done, create a MYSQL DB connector to connect to each tenant's DB
Then create a Victoria connector for each tenant
Then create your
tenant and assign the connectors accordingly
Once created, the main configuration DB connector cannot be removed. You must create a new one before.