ubuntu 20.04系统自带源直接安装的是MySQL 8.0,要安装MySQL 5.7的话,需要先换源。
1、换源
sudo cp /etc/apt/sources.list /etc/apt/sources.list.old #备份原来的文件
sudo vim /etc/apt/sources.list #修改sources.list文件
# 清华镜像源 deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
2、更新
# 更新镜像源 sudo apt-get update # 更新软件 sudo apt-get upgrade
3、安装MySQL5.7(需要输入两次mysql的root用户的密码)
# 安装mysql5.7服务端 sudo apt-get install mysql-server-5.7 # 安装mysql5.7客户端 sudo apt-get install mysql-client-5.7
4、安装完成,查看MySQL的版本
mysql -V # 查看mysql版本
5、连接MySQL(使用root和刚才设置的root的密码)