centos7安装mysql8.0

mysql文档地址是https://dev.mysql.com/doc/refman/8.0/en/linux-installation-yum-repo.html。

首先从https://dev.mysql.com/downloads/repo/yum/下载yum文件：

用命令下载：

 wget https://dev.mysql.com/get/mysql80-community-release-el7-7.noarch.rpm

安装：

sudo yum install mysql80-community-release-el7-7.noarch.rpm 

禁止mysql5.0:

sudo yum-config-manager --disable mysql57-community

启用mysql8.0：

sudo yum-config-manager --enable mysql80-community

查看结果：

yum repolist enabled | grep mysql

安装mysql server：

sudo yum install mysql-community-server

启动mysql服务：

sudo systemctl start mysqld

查看mysql临时密码：

sudo grep 'temporary password' /var/log/mysqld.log

复制上面的临时密码用作登录：

 mysql -u root -p

更改密码：

ALTER USER 'root'@'localhost' IDENTIFIED BY '123456Abcd;';