1.下载mysql安装包
https://downloads.mysql.com/archives/get/p/23/file/mysql-server_8.0.25-1debian9_amd64.deb-bundle.tar

2.下载相关依赖包
http://mirrors.ustc.edu.cn/debian/pool/main/p/psmisc/psmisc_22.21-2.1+b2_amd64.deb
http://mirrors.ustc.edu.cn/debian/pool/main/m/mecab/libmecab2_0.996-3.1_amd64.deb
http://mirrors.ustc.edu.cn/debian/pool/main/n/numactl/libnuma1_2.0.11-2.1_amd64.deb

3.安装相关依赖
apt-get install libaio1
dpkg -i psmisc_22.21-2.1+b2_amd64.deb
dpkg -i psmisc_22.21-2.1+b2_amd64.deb
dpkg -i libnuma1_2.0.11-2.1_amd64.deb

4.解压mysql安装包
tar -xvf mysql-server_8.0.25-1debian9_amd64.deb-bundle.tar

5.安装mysql.deb包
dpkg -i mysql-common*
dpkg -i mysql-community-client*
dpkg -i mysql-client*
dpkg -i mysql-community-server*
dpkg -i mysql-server(tab自动补全)

6.安装过程中会输入密码

7.其他命令
卸载相关：
7.1 查看安装的软件
dpkg --get-selections | grep mysql

7.2 卸载对应的软件
apt-get --purge remove mysql-community-client（这里一定要输入全名）

7.3 删除文件
rm -rf /etc/mysql/
rm -rf /var/lib/mysql/