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Note that your username and password of your locally-installed datastores - mysql and cassandra - will have to conform to the specifications in demo-server to work. You'll have to ensure MySQL's `root` user has password `mysql` and Cassandra's `cassandra` user has password `password` .

Tip : If you encounter an error where MySQL can't connect such as "org.mariadb.jdbc.internal.util.dao.QueryException: Could not connect to address=(host=localhost)(port=3306)(type=master) : Connection refused (Connection refused)", then ensure that bind-address = 0.0.0.0 in your /etc/mysql/mysql.conf.d/mysqld.cnf .

Also, make sure Cassandra and MySQL services are started using `service mysql start` and `service cassandra start`.

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