1update mysql.user set plugin='unix_socket';
2flush privileges;
3connect(localhost,USER,,test,MASTER_PORT,MASTER_SOCKET);
4connect  fail,localhost,$USER;
5ERROR HY000: Plugin 'unix_socket' is not loaded
6ERROR HY000: Plugin 'unix_socket' is not loaded
7install plugin unix_socket soname 'auth_socket.so';
8connect(localhost,USER,,test,MASTER_PORT,MASTER_SOCKET);
9ERROR 28000: Access denied for user 'USER'@'localhost'
10ERROR 28000: Access denied for user 'USER'@'localhost'
11update mysql.user set plugin='';
12flush privileges;
13uninstall plugin unix_socket;
14