mysqlnd cannot connect to MySQL 4.1+ using the old insecure authentication
1、vi /etc/my.cnf
old_passwords = 1 改为 old_passwords = 0
重启 mysql
root用户进入mysql
mysql>use mysql;
mysql> update user set password=password("ccdb") where User='yuanziyang' and Host='%';
mysql> flush privileges;
mysql> exit;
