NOTE: If you are logged in as a non-root user, you will need to pre-pend the commands with sudo.

1. Install MySQL: apt-get install mysql-server – during the MySQL installation, you may be prompted to set the root password – make a note of what you set this to.
2. IMPORTANT: Modify /etc/mysql/mysql.conf.d/mysqld.cnf uncommenting the max_connections line and set the value to 100000 (max_connections = 100000). Additionally, you should add the parameter skip-log-bin to the mysqld.cnf to prevent excessive logging.
3. Restart MySQL service systemctl restart mysql to apply the above settings
4. Add non-root database user:
   • Connect to database as root mysql -u root -p (enter root password if you set one).
   • Create a new user: at mysql> prompt: CREATE USER 'mynewuser'@'%' IDENTIFIED BY 'goodPassword'; where mynewuser is your dbadmin and goodPassword is your secure password.
   • If you are successful, you will see Query OK, 0 rows affected (0.00 sec)
   • Apply privileges to the new user: GRANT ALL PRIVILEGES ON * . * TO 'mynewuser'@'%';
   • Reload the privileges to make sure the new ones are in place: FLUSH PRIVILEGES;
5. Create cluster database:
   • Connect with the new user: type quit to log out the root user, then mysql -u mynewuser -p
   • Create database: CREATE DATABASE cluster;

The database will be populated by the stream manager when that is running.