New introduced SSL connections on MySQL Server is now default installed on CentOS 6.7 default rep.
Just removing the certificate files can solve it accoding with Docs:
"If the server does not find valid certificate and key files in the data directory, it continues executing, but does not enable secure connections." Ref: http://dev.mysql.com/doc/refman/5.7/en/secure-connections.html
But I want to fully disable SSL connections plugin on MySQL server, because I want to optimize the performance of MySQL server by removing everything that I am not using and this includes this plugin.
How to disable SSL on MySQL community server?
My test:
Edit the config file:
/path/to/file/my.cnf