Solving a “communications link failure” with JDBC and MySQL [duplicate]

Answer 1

In my case,

1. Change the remote machine mysql configuration at /etc/mysql/my.cnf: change bind-address = 127.0.0.1 to #bind-address = 127.0.0.1

2. On the remote machine, change mysql user permissions with GRANT ALL PRIVILEGES ON *.* TO 'user'@'%' IDENTIFIED BY 'password';

3. IMPORTANT: restart mysql on the remote machine: sudo /etc/init.d/mysql restart