Ubuntu22.04 MySQL 8.0安装修改密码以及远程连接

安装

sudo apt-get install mysql-server -y

卸载

sudo apt purge mysql-*
sudo rm -rf /etc/mysql/ /var/lib/mysql
sudo apt autoremove
sudo apt autoclean`

修改/etc/mysql/mysql.conf.d/mysqld.cnf配置文件重启：
注释掉地址绑定:

#bind-address = 127.0.0.1

#mysqlx-bind-address = 127.0.0.1

重启:

sudo systemctl restart mysql

查看mysql监听端口:

sudo netstat -anp|grep mysql

无密码进入mysql后设置远程访问

sudo mysql -u root
UPDATE user SET host = '%' WHERE user = 'root';

修改密码

ALTER USER 'root' IDENTIFIED WITH mysql_native_password BY '12345678';

忘记密码可以使用/etc/mysql/debian.cnf里的密码登录然后把authentication_string设置为空:

update user set authentication_string='' where user='root'

退出后不用密码登录,然后使用上面的修改密码语句修改密码。