删除mysql
sudo apt-get autoremove --purge mysql-server-5.5
sudo apt-get remove mysql-common
清理残留数据
dpkg -l |grep ^rc|awk '{print $2}' |sudo xargs dpkg -P
重新安装mysql
sudo apt-get install mysql-server
sudo apt-get install mysql-client
查看root密码
sudo cat /etc/mysql/debian.cnf
修改root密码
set password for root@localhost = password('123456');
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