一? 最新yum源一键安装

官方yum源地址

MySQL :: Download MySQL Yum Repository

https://dev.mysql.com/get/mysql80-community-release-el7-4.noarch.rpm

地址失效的话按下列操作

进入官网点击 Down

复制链接地址后进行下列操作

安装mysql-yum源
yum localinstall https://dev.mysql.com/get/mysql80-community-release-el7-4.noarch.rpm
安装mysql
yum install mysql-community-server
#启动mysql
systemctl start mysqld
#查看mysql状态
systemctl status mysqld
#查看mysql初始密码
cat /var/log/mysqld.log | grep password

连接mysql
mysql -u root -p
输入密码

修改密码
alter user user() identified by "123456";
注意：yum最新版本会限制密码输入条件

?二? yum源安装指定版本

?这里复制这里的地址

创建目录

cd /usr/local

mkdir mysql

通过wget下载
wget https://downloads.mysql.com/archives/get/p/23/file/mysql-8.0.18-1.el7.x86_64.rpm-bundle.tar
没有wget的话通过下列安装
yum install wget -y
然后解压
tar -xvf mysql-8.0.18-1.el7.x86_64.rpm-bundle.tar
ll命令查看

然后一一解压下列语句

rpm -ivh mysql-community-common-8.0.18-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-8.0.18-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-8.0.18-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-8.0.18-1.el7.x86_64.rpm

?可能出现问题情况：

查看?

rpm -qa | grep mariadb

?删除mariadb

rpm -e mariadb-libs-5.5.60-1.el7_5.x86_64 --nodeps

ok，重试

?下载依赖

yum install net-tools -y

yum install perl-Module-Install.noarch?-y

ok，重试

初始化
mysqld --initialize
授权
chown mysql:mysql /var/lib/mysql -R
启动mysql
systemctl start mysqld
查看mysql状态
systemctl status mysqld
连接mysql
mysql -u root -p
修改密码
alter user user() identified by "123456";

?有关mysql权限问题跳转这里mysql用户权限_挽風入耳的博客-CSDN博客