sudo wget https://dev.mysql.com/get/mysql-apt-config_0.8.1-1_all.deb
sudo dpkg -i mysql-apt-config_0.8.1-1_all.deb　＃安装过程选择mysql5.7

sudo apt-get update
 

sudo apt-get install mysql-server
sudo mysql_upgrade -uroot -p

sudo service mysql restart
mysqlcheck -uroot -p --all-databases 

# 修改用户目录
sudo service mysql stop
sudo usermod -d /var/lib/mysql/ mysql
sudo service mysql start

# 注释掉bind-address = 127.0.0.1这一行并保存
sudo vim /etc/mysql/mysql.conf.d/mysqld.conf

# 重启
sudo service mysql restart

mysql --version
netstat -anp | grep 'mysql'

mysql -h ip -u root -p