一、mysql5.7 密碼過期問題

報錯：

ERROR 1862 (HY000): Your password has expired. To log in you must change it using a client that supports expired passwords.

翻譯：

錯誤1862(HY000):你的密碼已經過期。登錄必須改變它使用一個客戶端,支持過期的密碼。

解決方法：

1、 用忽略授權表的方法進入mysql 

        vi /etc/my.cnf
　　    [mysqld]　　    skip-grant-tables　　    :wq! #保存退出

2、進入mysql，查看root用戶的詳細信息

        # mysql -u root -p
        > use mysql        > select * from mysql.user where user='root' \G

*************************** 1. row ***************************
                  Host: localhost                  User: root
           Select_priv: Y
           Insert_priv: Y
           Update_priv: Y
           Delete_priv: Y
           Create_priv: Y
             Drop_priv: Y
           Reload_priv: Y
         Shutdown_priv: Y
          Process_priv: Y
             File_priv: Y
            Grant_priv: Y
       References_priv: Y
            Index_priv: Y
            Alter_priv: Y
          Show_db_priv: Y
            Super_priv: Y
 Create_tmp_table_priv: Y
      Lock_tables_priv: Y
          Execute_priv: Y
       Repl_slave_priv: Y
      Repl_client_priv: Y
      Create_view_priv: Y
        Show_view_priv: Y
   Create_routine_priv: Y
    Alter_routine_priv: Y
      Create_user_priv: Y
            Event_priv: Y
          Trigger_priv: Y
Create_tablespace_priv: Y
              ssl_type:
            ssl_cipher:
           x509_issuer:
          x509_subject:
         max_questions: 0
           max_updates: 0
       max_connections: 0
  max_user_connections: 0
                plugin: mysql_native_password
 authentication_string: *AC241830FFDDC8943AB31CBD47D758E79F7953EA
      password_expired: N
 password_last_changed: 2015-11-11 16:52:49
     password_lifetime: NULL
        account_locked: N1 row in set (0.00 sec)

3、把password_expired 改成不過期

        >  update user set password_expired='N' where user='root';
        > flush privileges;
        > quit

4、把 /etc/my.cnf 的 skip-grant-tables 這行注釋掉

5、重啟服務

     #service mysql restart

6、再次登陸 mysql 就正常了