mac系统中搭建apache+mysql+php的开发环境,安装mysql后,登录报错:mac ERROR 1045 (28000): Access denied for user 'root'@'l...

php新手在mac系统中搭建apache+mysql+php的开发环境(按照这篇博客来操作的:http://my.oschina.net/joanfen/blog/171109?fromerr=xvCsafCe),在安装配置mysql完毕后,登录mysql,报错:mac ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO),折腾很久,终于解决,随手记录下,备忘。

解决方法:

第一步:如果mysql服务正在进行,将之停止。

第二步:在终端中以管理员权限启动mysqld_safe,命令如下:

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

执行结果如下:

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:不要关闭当前的终端窗口,新建一个终端窗口,输入如下命令,回车登录mysql

/usr/local/mysql/bin/mysql

登录后,看到欢迎信息:

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> 

打开"mysql"这个数据库,SQL如下:

mysql> use mysql;

看到结果:

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的密码,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,密码可能存储在password字段中,可以使用"describe user;"命令来查看下表结构再操作

authentication_string的值一定通过password函数来计算(password('root'))

 

执行结果如下:

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

退出mysql(执行sql语句:exit)

最后一步:将mysqld_safe进程杀死,重启mysqld。

 

可能会遇到的问题

登录mysql

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

这个时候,如果执行查询之类的操作,比如执行"show databases;",可能会有如下提示:

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

根据提示进行操作,输入如下SQL语句,这个语句的作用是修改root用户的口令为root

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

结果:

Query OK, 0 rows affected

至此,问题解决。

 

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

 

转载于:https://www.cnblogs.com/benbenzhu/p/5578162.html

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