# Mongodb [authSource](https://www.mongodb.com/docs/manual/reference/connection-string/#mongodb-urioption-urioption.authSource). For Atlas set to `admin`.Defaults to `MONGO_DBNAME`.Only evaluated on first run.
# Mongodb [authSource](https://www.mongodb.com/docs/manual/reference/connection-string/#mongodb-urioption-urioption.authSource). For Atlas set to `admin`.Defaults to `MONGO_DBNAME`.Only evaluated on first run.