為什麽配置skip-name-resolve？

由於mysql -h${ip} 遠程訪問速度過慢，

mysql -h172.16.66.171 -uroot -p123456

根據網友經驗（https://www.cnblogs.com/yjf512/p/3803762.html），

vi /etc/my.cnf

[mysqld]
skip-name-resolve

重啟mysql,發現遠程訪問msyql速度上來了，解決問題。

然而引發了新的問題：

但是卻發現msyql（mysql -h127.0.0.1 -uroot -p123456）無法本地訪問：

[root@localhost ~]#  mysql -h127.0.0
 
.1 -uroot -p123456
Warning: Using a password on the command line interface can be insecure.
ERROR 1045 (28000): Access denied for user ‘root‘@‘127.0.0.1‘ (using password: YES)

而不輸入密碼（mysql -h127.0.0.1 -uroot）卻可以訪問。

[root@localhost ~]#   mysql -h127.0.0.1 -uroot 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id 
 
is 91114
Server version: 5.6.35-log MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type ‘help;‘ or ‘\h‘ for help. Type ‘
 
\c‘ to clear the current input statement.

mysql>

解決方法：

參考（http://blog.sina.com.cn/s/blog_759a5a7c01017dj0.html），重置root密碼：

[root@localhost ~]#   mysql -h127.0.0.1 -uroot 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 91114
Server version: 5.6.35-log MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.

mysql> use mysql;
Database changed
mysql> update user set password=password("123456") where user="root";
Query OK, 3 rows affected (0.06 sec)
Rows matched: 5  Changed: 3  Warnings: 0

mysql> flush privileges;
Query OK, 0 rows affected (0.13 sec)

mysql> quit
Bye

[root@localhost ~]# 

用 mysql -h127.0.0.1 -uroot -p123456 訪問，問題解決。

[root@localhost ~]# mysql -h127.0.0.1 -uroot -p123456
Warning: Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2487
Server version: 5.6.35-log MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.

mysql>

由於開啟skip-name-resolve引發的ERROR 1045 (28000)網上資料不詳，解決這個問題花了大半天，所以發布這篇文章。

My first blog on cnblogs!

mysql開啟skip-name-resolve 導致[email protected](localhost)訪問引發的ERROR 1045 (28000)錯誤解決方案