软件安装

1） 需先卸载mariadb-server、mariadb-common

yum remove mariadb-server mariadb-common    # 卸载mariadb-server、mariadb-common

2） 下载

mysql-community-client-8.0.20-1.el8.x86_64.rpm
mysql-community-libs-8.0.20-1.el8.x86_64.rpm
mysql-community-common-8.0.20-1.el8.x86_64.rpm
mysql-community-server-8.0.20-1.el8.x86_64.rpm

下载地址如下：

https://downloads.mysql.com/archives/get/p/23/file/mysql-community-server-8.0.20-1.el8.x86_64.rpm
https://downloads.mysql.com/archives/get/p/23/file/mysql-community-client-8.0.20-1.el8.x86_64.rpm
https://downloads.mysql.com/archives/get/p/23/file/mysql-community-libs-8.0.20-1.el8.x86_64.rpm
https://downloads.mysql.com/archives/get/p/23/file/mysql-community-common-8.0.20-1.el8.x86_64.rpm

3） 安装mysql8.0

#yum install -y ./mysql-community-*

安装mysql8.0
使用yum安装本地文件会自动补全依赖

4） 启动mysqld

# systemctl start mysqld

启动mysql

5） MySQL默认密码和修改密码

#grep 'temporary password' /var/log/mysqld.log
#mysql -uroot -p    # 查看mysql默认密码并登录数据库

修改密码

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'Zhang.409';    # 修改默认密码为自己想要的密码

重新登录
使用新密码登录数据库

验证数据库

create database shujuku charset utf8;    # 新建库
show databases;    # 查询库

通过增删改查等简单操作验证数据库是否安装成功