I have installed SuperSet on Ambari 2.7 but don't know what's the default name and password. How to reset it...
By default it uses sqllite as Database (no password). However, you can try checking the following files for more details on the Superset host.
# grep 'SUPERSET_DATABASE_PASSWORD' /etc/superset/conf/superset_config.py # grep 'SUPERSET_DATABASE_PASSWORD' /var/lib/ambari-agent/data/command-*
Via ambari Ui you can check
Ambari UI --> Superset --> Configs --> 'SUPERSET META DATA STORAGE CONFIG' (tab)
Search for "Superset Database password" section in the above page and verify if it is empty or password is set.