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使用debian-sys-maint登录系统，修改密码 查看debian-sys密码 it@it.net.cn:/etc/mysql$ sudo cat /etc/mysql/debian.cnf # Automatically generated for Debian scripts. DO NOT TOUCH! [client] host = localhost user = debian-sys-maint password = uLz3xiuwdnpAmWt4 socket = /var/run/mysqld/mysqld.sock [mysql_upgrade] host = localhost user = debian-sys-maint password = uLz3xiuwdnpAmWt4 socket = /var/run/mysqld/mysqld.sock 记住上面user和password 使用debian-sys-maint登录并修改密码 it@it.net.cn:/etc/mysql$ mysql -u debian-sys-maint -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 4 Server version: 5.7.23-0ubuntu0.18.04.1 (Ubuntu) 成功登陆mysql mysql> update mysql.user set authentication_string=password('root') where user='root' and Host ='localhost'; mysql> update user set plugin="mysql_native_password"; mysql> flush privileges; 1 2 3 刷新权限后，quit退出会话。 使用新设置的root密码登录root it@it.net.cn:/etc/mysql$ mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 5 Server version: 5.7.23-0ubuntu0.18.04.1 (Ubuntu) (责任编辑：IT) |