Download file: https://blog.csdn.net/wap816/article/details/107460974
Installation: http://www.chaona.net/linux/ubuntu-install-mysql.html
Reference: https://www.jianshu.com/p/ba48f1e386f0
If you can’t download it, you can download it at csdn (5 points are required): https://download.csdn.net/download/zwx_lucky/13120250
Install in order
sudo dpkg -i
libmecab2_0.996-10build1_amd64.deb
libtinfo5_6.2-0ubuntu2_amd64.deb
mysql-common_5.7.30-1ubuntu18.04_amd64.deb
mysql-community-client_5.7.30-1ubuntu16.04_amd64.deb
mysql-client_5.7.30-1ubuntu16.04_amd64.deb
mysql-community-server_5.7.30-1ubuntu16.04_amd64.deb
Set the external network to connect:
Login to mysql
use mysql;
update user set host='%' where user = 'root' limit 1;
quit;
Restart: sudo service mysql restart
Configuration file location: etc/mysql/mysql.conf.d
Uninstall 8.0: https://www.cnblogs.com/zhangxuel1ang/p/13456116.html
Uninstall 5.7:
Check which ones are installed: dpkg --list|grep mysql
Uninstall:
sudo apt-get autoremove --purge mysql-community-server
sudo apt-get autoremove --purge mysql-community-client
sudo apt-get remove mysql-common
Clear residual data: dpkg -l|grep ^rc|awk'{print$2}'|sudo xargs dpkg -P