MySQL 5.6 Reference Manual Including MySQL NDB Cluster 7.3-7.4 Reference Guide
The following sections describe pluggable authentication methods available in MySQL and the plugins that implement these methods. For general discussion of the authentication process, see Section 6.2.11, “Pluggable Authentication”.
The default plugin is mysql_native_password
unless the
--default-authentication-plugin
option is set otherwise at server startup.