卸载
sudo apt-get autoremove --purge mysql-server-5.7
sudo apt-get autoremove --purge mysql-client-5.7
sudo apt-get remove mysql-common
sudo rm -rf /etc/mysql/ 不删除的话之后安装会处问题
ls -l /etc/ | grep mysql 查看是否已经删掉
清除残留数据
dpkg -l |grep ^rc|awk '{print $2}' |sudo xargs dpkg -P
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安装
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sudo apt-get install mysql-server
sudo apt-get install mysql-client
sudo apt-get install libmysqlclient-dev
查看是否安装成功
sudo netstat -tap | grep mysql