安装mysql8
wget https://repo.mysql.com/mysql-apt-config_0.8.12-1_all.deb
sudo apt-get install lsb-release
sudo dpkg -i mysql-apt-config_0.8.12-1_all.deb
sudo apt-get update
sudo apt-get install -y mysql-community-server
验证
dpkg -l |grep -i mysql
sudo service mysql status
卸载mysql
sudo apt-get remove --purge mysql-\* -y
sudo apt-get autoremove -y
升级5.7
set global innodb_fast_shutdown = 0;
sudo service mysql stop;
按照上面卸载mysql
按照上面安装mysql8
sudo mysql_upgrade -u root -p密码
mysql -uroot -p密码 查看之前的数据来验证