為什麼配置skip-name-resolve？ 由於mysql -h${ip} 遠程訪問速度過慢， 根據網友經驗（https://www.cnblogs.com/yjf512/p/3803762.html）， 重啟mysql,發現遠程訪問msyql速度上來了，解決問題。 然而引發了新的問題： 但是卻 ...
為什麼配置skip-name-resolve？
由於mysql -h${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，所以發佈這篇文章。
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