1.下载myslq安装包
$ cd /usr/local/src
sudo chmod +x mysql-server_5.7.20-1debian7_amd64.deb-bundle.tar
如果在root下直接解压
$ tar vxf mysql-server_5.7.20-1debian7_amd64.deb-bundle.tar
ls查看：解压之后的目录:如下
3.更新依赖源及安装libaio1依赖
apt-get upgrade
dpkg -i mysql-common_5.7.20-1debian7_amd64.deb
$ dpkg-preconfigure mysql-community-server_5.7.20-1debian7_amd64.deb
执行后会出现设置数据库root的密码。
5.继续安装
dpkg -i libmysqlclient-dev_5.7.20-1debian7_amd64.deb
dpkg -i mysql-community-client_5.7.20-1debian7_amd64.deb
dpkg -i mysql-common_5.7.20-1debian7_amd64.deb
6.安装依赖包
apt-get -f install libmecab2
7.安装mysql－server
dpkg -i mysql-server_5.7.20-1debian7_amd64.deb
*如果出现mysql－server依赖报错～以上两句命令顺序调换执行一次～再重复第5步骤再执行第7步。
8.安装成功后检查
%20show%20databases%3B%20use%20mysql%3B%20update%20user%20set%20host%3D'%25'%20where%20user%3D'root'%3B%2010.%E4%BF%AE%E6%94%B9%2Fetc%2Fmysql%2Fmysql.conf.d%E4%B8%8B%E7%9A%84mysqld.cnf)
cd /etc/mysql/mysql.conf.d
service mysql restart
卸载
apt-get --purge remove mysql-client
apt-get autoremove
rm /etc/mysql/ -R
$ rm /var/lib/mysql/ -R
