如果您在 MySql 5.7.+ 中遇到同样的问题:
Access denied for user 'root'@'localhost'
这是因为 MySql 5.7 默认允许使用套接字连接,这意味着您只需使用sudo mysql
. 如果你运行 sql :
SELECT user,authentication_string,plugin,host FROM mysql.user;
然后你会看到它:
+------------------+-------------------------------------------+-----------------------+-----------+
| 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 | *497C3D7B50479A812B89CD12EC3EDA6C0CB686F0 | mysql_native_password | localhost |
+------------------+-------------------------------------------+-----------------------+-----------+
4 rows in set (0.00 sec)
要允许使用 root 和密码进行连接,请使用以下命令更新表中的值:
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'Current-Root-Password';
FLUSH PRIVILEGES;
然后再次运行 select 命令,您会看到它已更改:
+------------------+-------------------------------------------+-----------------------+-----------+
| user | authentication_string | plugin | host |
+------------------+-------------------------------------------+-----------------------+-----------+
| root | *2F2377C1BC54BE827DC8A4EE051CBD57490FB8C6 | mysql_native_password | localhost |
| mysql.session | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | mysql_native_password | localhost |
| mysql.sys | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | mysql_native_password | localhost |
| debian-sys-maint | *497C3D7B50479A812B89CD12EC3EDA6C0CB686F0 | mysql_native_password | localhost |
+------------------+-------------------------------------------+-----------------------+-----------+
4 rows in set (0.00 sec)
就是这样。sudo mysql_secure_installation
您可以在运行并完成命令后运行此过程。
对于 mariadb,使用
SET PASSWORD FOR 'root'@'localhost' = PASSWORD('manager');
设置密码。更多信息请访问https://mariadb.com/kb/en/set-password/