centos 安装mysql 8.0

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;