mac系統中搭建apache+mysql+php的開發環境,安裝mysql后,登錄報錯:mac ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)


php新手在mac系統中搭建apache+mysql+php的開發環境(按照這篇博客來操作的:http://my.oschina.net/joanfen/blog/171109?fromerr=xvCsafCe),在安裝配置mysql完畢后,登錄mysql,報錯:mac ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO),折騰很久,終於解決,隨手記錄下,備忘。

解決方法:

第一步:如果mysql服務正在進行,將之停止。

第二步:在終端中以管理員權限啟動mysqld_safe,命令如下:

sudo /usr/local/mysql/bin/mysqld_safe --skip-grant-tables

執行結果如下:

2016-06-12T08:29:17.6NZ mysqld_safe Logging to '/usr/local/mysql/data/lyqdeMacBook-Pro.local.err'.
2016-06-12T08:29:17.6NZ mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data

第三步:不要關閉當前的終端窗口,新建一個終端窗口,輸入如下命令,回車登錄mysql

/usr/local/mysql/bin/mysql

登錄后,看到歡迎信息:

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 37
Server version: 5.7.13 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> 

打開"mysql"這個數據庫,SQL如下:

mysql> use mysql;

看到結果:

Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> 

然后,更新root的密碼,SQL如下:

mysql> update user set authentication_string=password('root') where Host='localhost' and User='root';

注意:

①有的版本的mysql中,密碼可能存儲在password字段中,可以使用"describe user;"命令來查看下表結構再操作

authentication_string的值一定通過password函數來計算(password('root'))

 

執行結果如下:

Query OK, 1 row affected, 1 warning (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 1

退出mysql(執行sql語句:exit)

最后一步:將mysqld_safe進程殺死,重啟mysqld。

 

可能會遇到的問題

登錄mysql

/usr/local/mysql/bin/mysql -uroot -proot

這個時候,如果執行查詢之類的操作,比如執行"show databases;",可能會有如下提示:

ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

根據提示進行操作,輸入如下SQL語句,這個語句的作用是修改root用戶的口令為root

mysql> alter user 'root'@'localhost' identified by 'root';

結果:

Query OK, 0 rows affected

至此,問題解決。

 

參考:http://stackoverflow.com/questions/13480170/access-denied-for-mysql-error-1045

 


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