Ubuntu18.04安装MySQL8.0.12不能设置root

准备阶段：

系统：Ubuntu Server18.04 （全新系统或彻底删除了老版mysql数据）

数据库：MySQL8.0.12

zhenniuejideMBP:~ zhenniu$ scp /Users/zhenniu/Desktop/mysql-server_8.0.12-1ubuntu18.04_amd64.deb-bundle.tar zero@192.168.56.6:/home/zero

注：如果是Ubuntu 桌面版可以直接下载，如果是Ubuntu 服务器版，可以在其他系统下载完，用scp命令上传到服务器。
格式：scp 要上传的文件名 远程主机名@远程主机IP：远程主机存放文件的路径

1.解压

tar xvf mysql-server_8.0.12-1ubuntu18.04_amd64.deb-bundle.tar

2.更新

sudo apt-get update  
sudo apt-get upgrade

3.按顺序安装

sudo apt-get install libaio1
sudo dpkg -i libmecab2_0.996-5_amd64.deb
sudo dpkg -i mysql-common_8.0.12-1ubuntu18.04_amd64.deb
sudo dpkg -i libmysqlclient21_8.0.12-1ubuntu18.04_amd64.deb
sudo dpkg -i libmysqlclient-dev_8.0.12-1ubuntu18.04_amd64.deb
sudo dpkg -i mysql-community-client-core_8.0.12-1ubuntu18.04_amd64.deb sudo dpkg -i mysql-community-server-core_8.0.12-1ubuntu18.04_amd64.deb sudo dpkg -i mysql-community-client_8.0.12-1ubuntu18.04_amd64.deb
sudo dpkg -i mysql-client_8.0.12-1ubuntu18.04_amd64.deb
sudo dpkg -i mysql-community-serve_8.0.12-1ubuntu18.04_amd64.deb

4.设置root密码