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'@'localhost' (using password: NO)
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'@'localhost' (using password: NO)
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
②authentication_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