Ubuntu MySQL5.7设置root密码

Ubuntu18.04 MySQL5.7设置root密码

  • 1.从debian.cnf中找到安装时生成的用户名和密码
  • 2.修改root密码
    • 方法1:
    • 方法2:
    • 方法3:
  • 3.修改plugin字段内容为mysql_native_password

1.从debian.cnf中找到安装时生成的用户名和密码

(base) yhq@yhq-System-Product-Name:~$ sudo cat /etc/mysql/debian.cnf
# Automatically generated for Debian scripts. DO NOT TOUCH!
[client]
host     = localhost
user     = debian-sys-maint
password = xxxxxxxx
socket   = /var/run/mysqld/mysqld.sock
[mysql_upgrade]
host     = localhost
user     = debian-sys-maint
password = xxxxxxxx
socket   = /var/run/mysqld/mysqld.sock

2.修改root密码

用找到的用户名和密码登陆,我用的是dbeaver,创建新的连接,选择MySQL。

方法1:

update mysql.user set authentication_string=password('123456') where user='root' and Host = 'localhost';

方法2:

ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';

方法3:

set password for root@localhost = password('123');

3.修改plugin字段内容为mysql_native_password

update mysql.user set plugin='mysql_native_password'  where user='root' and Host = 'localhost';
flush privileges ; 

如果没有修改plugin字段为 mysql_native_password,用新密码无法成功登陆。因为没有更新这个字段,被坑的好苦…

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