我一直在按照手册在Ubuntu上安装软件套件。我完全不了解MySQL。我已经在我的Ubuntu上完成了以下安装。
sudo apt-get update
sudo apt-get install mysql-server-5.5
sudo apt-get install mysql-client-5.5
sudo apt-get install mysql-common
sudo apt-get install glade
sudo apt-get install ntp
然后我做了
cd ~/Desktop/iPDC-v1.3.1/DBServer-1.1
mysql -uroot -proot <"Db.sql"
我最终得到以下错误消息。
错误1045(28000):拒绝访问用户'root'@'localhost'(使用密码:YES)
我该如何修复它并继续?
对于那些目前的答案不工作的人,可以试试这个(在macOS上测试):
mysql -h localhost -u root -p --protocol=TCP
在此之后,将要求您输入密码,您应该使用您的操作系统用户密码。然后当你进入MySQL时,你可以运行:
select Host, User from mysql.user;
你应该看到:
MySQL [(none)]> select Host, User from mysql.user;
+-----------+------------------+
| Host | User |
+-----------+------------------+
| localhost | mysql.infoschema |
| localhost | mysql.session |
| localhost | mysql.sys |
| localhost | root |
+-----------+------------------+
从这里你可以改变配置,编辑密码或修改拨款。
在Ubuntu 16.04 (Xenial Xerus)和MySQL 5.7.13版本中,我能够通过以下步骤解决这个问题:
Follow the instructions from section B.5.3.2.2 Resetting the Root Password: Unix and Unix-Like Systems
MySQL 5.7 reference manual
When I tried #sudo mysqld_safe --init-file=/home/me/mysql-init & it failed. The error was in /var/log/mysql/error.log:
2016-08-10T11:41:20.421946Z 0 [Note] Execution of init_file '/home/me/mysql/mysql-init' started.
2016-08-10T11:41:20.422070Z 0 [ERROR] /usr/sbin/mysqld: File '/home/me/mysql/mysql-init' not found (Errcode: 13 - Permission denied)
2016-08-10T11:41:20.422096Z 0 [ERROR] Aborting
mysql-init的文件权限不是问题。我们需要编辑AppArmor权限。
Edit by sudo vi /etc/apparmor.d/usr.sbin.mysqld
....
/var/log/mysql/ r,
/var/log/mysql/** rw,
# Allow user init file
/home/pranab/mysql/* r,
# Site-specific additions and overrides. See local/README for details.
#include <local/usr.sbin.mysqld>
}
Do sudo /etc/init.d/apparmor reload
Start mysqld_safe again. Try step 2 above. Check file /var/log/mysql/error.log. Make sure there is no error and the mysqld is successfully started.
Run mysql -u root -p
Enter password:
Enter the password that you specified in mysql-init. You should be able to log in as root now.
Shutdown mysqld_safe by sudo mysqladmin -u root -p shutdown
Start mysqld the normal way by sudo systemctl start mysql
在最近的MySQL版本中,MySQL中没有任何密码。用户表。
所以你需要执行ALTER USER。将这一行命令放入文件中。
ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass';
并以init文件的形式执行(以root或mysql用户):
mysqld_safe --init-file=/home/me/mysql-init &
MySQL服务器需要停止才能启动mysqld_safe。
另外,加载这个init文件的AppArmor权限可能也有问题。阅读更多在AppArmor和MySQL。