在home下新建一个mysql文件夹
cd /home
mkdir mysql
cd mysql
1.首先上传文件,把文件传到 /home/mysql下
链接：https://pan.baidu.com/s/1Y2Fjf2gO57jLhRrttyYd3A
提取码：0i88
2.卸载mariadb
rpm -qa|grep mariadb
rpm -e --nodeps mariadb-libs-5.5.56-2.el7.x86_64
2.安装新mysql
tar -xvf mysql-8.0.23-1.el7.x86_64.rpm-bundle.tar
rpm -ivh mysql-community-common-8.0.23-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-plugins-8.0.23-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-8.0.23-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-8.0.23-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-8.0.23-1.el7.x86_64.rpm --nodeps
rpm -qa | grep mysql
4.初始化
mysqld --initialize
chown mysql:mysql /var/lib/mysql -R
systemctl start mysqld.service
systemctl enable mysqld
grep 'temporary password' /var/log/mysqld.log
5.登录数据库
mysql -uroot -p
密码用上面的那个默认密码
修改密码
alter user 'root'@'localhost' identified by 'root';
flush privileges;
