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官网地址https://dev.mysql.com/downloads/mysql/
选择操作系统类型和操作系统的版本
wget https://dev.mysql.com/downloads/file/?id=514298
tar -xvf mysql-8.0.31-1.el8.x86_64.rpm-bundle.tar
rpm -ivh mysql-community-common-8.0.31-1.el8.x86_64.rpm
rpm -ivh mysql-community-client-plugins-8.0.31-1.el8.x86_64.rpm
rpm -ivh mysql-community-libs-8.0.31-1.el8.x86_64.rpm
rpm -ivh mysql-community-client-8.0.31-1.el8.x86_64.rpm
rpm -ivh mysql-community-icu-data-files-8.0.31-1.el8.x86_64.rpm
#在安装最后一个可能会报错 需要依赖一些其他的包用yum安装即可
yum -y install net-tools
yum -y install libaio
yum install libnuma*
yum install perl
#最后安装
rpm -ivh mysql-community-server-8.0.31-1.el8.x86_64.rpm
#执行这个命令需要等一会
mysqld --initialize --console
chown -R mysql:mysql /var/lib/mysql/
#开启mysql服务
systemctl start mysqld
#查看mysql的root用户的初始密码
cat /var/log/mysqld.log | grep localhost
mysql -uroot -p获取到的初始密码
#现在进入mysql更改密码
ALTER USER 'root'@'localhost' IDENTIFIED BY '设置的密码';
flush privileges;
#最后退出mysql
exit
#重新用新密码登录
mysql -uroot -p新密码
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