如何修改ubuntu服务器的MySQL root密码和用户名?我需要停止mysql服务之前,设置任何更改?
我有一个phpmyadmin设置以及,phpmyadmin会自动更新?
如何修改ubuntu服务器的MySQL root密码和用户名?我需要停止mysql服务之前,设置任何更改?
我有一个phpmyadmin设置以及,phpmyadmin会自动更新?
当前回答
如果部署在xampp上,您可以通过提供的phpadmin gui轻松更改mysql密码。
phpMyAdmin -> User Accounts -> Edit Privileges (Select the intended user) -> Change Password (Tab)
其他回答
这就是我的解决方案。我在Ubuntu 18.04工作: https://stackoverflow.com/a/46076838/2400373
但是重要的是最后一步的改变:
UPDATE mysql.user SET authentication_string=PASSWORD('YOURNEWPASSWORD'), plugin='mysql_native_password' WHERE User='root' AND Host='localhost';
下面的步骤对我很有效。我使用MySQL 8。*在Ubuntu上
停止MySQL服务,检查状态确认服务已停止
Sudo systemctl停止mysql Sudo systemctl status mysql
编辑systemd配置文件,这样您就可以在没有权限检查的情况下访问MySQL Sudo systemctl编辑mysql 复制并粘贴以下3行
(服务) ExecStart = ExecStart=/usr/sbin/mysqld——skip-grant-tables——skip-networking
粘贴行后按CTRL+0保存,然后按CTRL+X退出
重新加载mysql服务并启动它(使用——skip-grant-table启动服务)
Sudo systemctl daemon-reload Sudo systemctl启动mysql
5.现在无需密码即可连接MySQL服务器
sudo mysql -u root
6.通过运行加载授权表
mysql> FLUSH PRIVILEGES;
重置root密码
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'YourPasswordHere';
关闭mysql连接
mysql >退出
恢复对mysql systemd文件所做的修改
Sudo systemctl恢复mysql
重新加载mysql守护进程以进行更改。
Sudo systemctl daemon-reload
最后重新启动MySQL服务
Sudo systemctl restart mysql
现在用第7步设置的新密码连接mysql
你可以访问这个链接重置mysql 8的根密码了解更多细节。
官方和简单的方法来重置根密码在ubuntu服务器…
如果你在16.04 14.04 12.04
sudo dpkg-reconfigure mysql-server-5.5
如果你在10.04:
sudo dpkg-reconfigure mysql-server-5.1
如果您不确定安装了哪个mysql-server版本,您可以尝试:
dpkg --get-selections | grep mysql-server
mysql-server-5.7的更新说明
请注意,如果您使用的是mysql-server-5.7,则不能使用上面所示的更简单的dpkg-reconfigure方法。
如果你知道密码,登录并运行这个:
UPDATE mysql.user SET authentication_string=PASSWORD('my-new-password') WHERE USER='root';
FLUSH PRIVILEGES;
或者,您可以使用以下方法:
sudo mysql_secure_installation
这将询问您一系列关于保护安装的问题(强烈推荐),包括是否需要提供新的根密码。
如果你不知道root密码,请参考这个以ubuntu为中心的进程写上去。
查看更多信息:
https://help.ubuntu.com/16.04/serverguide/mysql.html https://help.ubuntu.com/14.04/serverguide/mysql.html
首先执行以下命令:
sudo mysql
然后你应该检查你的MySQL用户帐户使用的身份验证方法。运行这个命令
SELECT user,authentication_string,plugin,host FROM mysql.user;
现在你可以看到这样的东西:
+------------------+-------------------------------------------+-----------------------+-----------+
| user | authentication_string | plugin | host |
+------------------+-------------------------------------------+-----------------------+-----------+
| root | | auth_socket | localhost |
| mysql.session | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | mysql_native_password | localhost |
| mysql.sys | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | mysql_native_password | localhost |
| debian-sys-maint | *CC744277A401A7D25BE1CA89AFF17BF607F876FF | mysql_native_password | localhost |
+------------------+-------------------------------------------+-----------------------+-----------+
在上面的表格中,你可以看到你所有的mysql用户的帐户状态&如果你已经设置了root帐户的密码,然后在插件列中看到mysql_native_password而不是auth_socket。 总之,要更改root密码,您应该运行以下命令:
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';
请务必将密码更改为您选择的强密码。 然后重新加载你的服务器,把你的新变化生效运行这个;
FLUSH PRIVILEGES;
所以再次检查你的mysql所使用的认证方法,通过下面的命令:
SELECT user,authentication_string,plugin,host FROM mysql.user;
现在输出是:
+------------------+-------------------------------------------+-----------------------+-----------+
| user | authentication_string | plugin | host |
+------------------+-------------------------------------------+-----------------------+-----------+
| root | *3636DACC8616D997782ADD0839F92C1571D6D78F | mysql_native_password | localhost |
| mysql.session | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | mysql_native_password | localhost |
| mysql.sys | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | mysql_native_password | localhost |
| debian-sys-maint | *CC744277A401A7D25BE1CA89AFF17BF607F876FF | mysql_native_password | localhost |
+------------------+-------------------------------------------+-----------------------+-----------+
正如您在授权表中看到的,您的根帐户具有mysql_native_password . 现在你可以退出MYSQL shell了
exit;
就是这样。只是你应该通过sudo service mysql restart重新启动mysql。 现在你可以用root帐号和密码轻松登录mysql。
正如mysql文档中password()函数所说:
此函数在MySQL 8.0.11中被移除。
这将使mysql v8.0.11及更新版本的所有现有答案都失效。
根据mysql文档,重置root密码的新通用方法如下:
The preceding sections provide password-resetting instructions specifically for Windows and Unix and Unix-like systems. Alternatively, on any platform, you can reset the password using the mysql client (but this approach is less secure): Stop the MySQL server if necessary, then restart it with the --skip-grant-tables option. This enables anyone to connect without a password and with all privileges, and disables account-management statements such as ALTER USER and SET PASSWORD. Because this is insecure, if the server is started with the --skip-grant-tables option, it enables --skip-networking automatically to prevent remote connections. Connect to the MySQL server using the mysql client; no password is necessary because the server was started with --skip-grant-tables: shell> mysql In the mysql client, tell the server to reload the grant tables so that account-management statements work: mysql> FLUSH PRIVILEGES; Then change the 'root'@'localhost' account password. Replace the password with the password that you want to use. To change the password for a root account with a different host name part, modify the instructions to use that host name. mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass'; You should now be able to connect to the MySQL server as root using the new password. Stop the server and restart it normally (without the --skip-grant-tables and --skip-networking options).