修改mysql初始密碼

grep 'temporary password' /var/log/mysqld.log

用該密碼登錄到服務端后，必須馬上修改密碼，不然會報如下錯誤：

mysql> select @@log_error; ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement. mysql>

修改密碼

ALTER USER 'root'@'localhost' IDENTIFIED BY 'root123';