1.下载

https://repo.mysql.com/
找到
wget  https://repo.mysql.com/mysql80-community-release-el7-1.noarch.rpm

2.安装 yum repo文件并更新 yum 缓存

rpm -ivh mysql80-community-release-el7-1.noarch.rpm
yum clean all
yum makecache


yum provides '*/applydeltarpm'
yum -y install deltarpm-3.6-3.el7.x86_64

yum install epel-release

3.使用 yum安装mysql

可以看到 MySQL 5.5 5.6 5.7为禁用状态 而MySQL 8.0为启用状态；

[root@lys-mysql-test001 ~]# yum repolist all | grep mysql
mysql-cluster-7.5-community/x86_64   MySQL Cluster 7.5 Community disabled
mysql-cluster-7.5-community-source   MySQL Cluster 7.5 Community disabled
mysql-cluster-7.6-community/x86_64   MySQL Cluster 7.6 Community disabled
mysql-cluster-7.6-community-source   MySQL Cluster 7.6 Community disabled
mysql-connectors-community/x86_64    MySQL Connectors Community  enabled:    230
mysql-connectors-community-source    MySQL Connectors Community  disabled
mysql-tools-community/x86_64         MySQL Tools Community       enabled:    138
mysql-tools-community-source         MySQL Tools Community - Sou disabled
mysql-tools-preview/x86_64           MySQL Tools Preview         disabled
mysql-tools-preview-source           MySQL Tools Preview - Sourc disabled
mysql55-community/x86_64             MySQL 5.5 Community Server  disabled
mysql55-community-source             MySQL 5.5 Community Server  disabled
mysql56-community/x86_64             MySQL 5.6 Community Server  disabled
mysql56-community-source             MySQL 5.6 Community Server  disabled
mysql57-community/x86_64             MySQL 5.7 Community Server  disabled
mysql57-community-source             MySQL 5.7 Community Server  disabled
mysql80-community/x86_64             MySQL 8.0 Community Server  enabled:    321
mysql80-community-source             MySQL 8.0 Community Server  disabled

查看小版本

[root@192-168-125-189 ~]# yum list mysql-community-server --showduplicates | sort -r
 * updates: mirrors.ustc.edu.cn
mysql-community-server.x86_64           8.0.29-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.28-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.27-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.26-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.25-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.24-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.23-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.22-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.21-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.20-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.19-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.18-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.17-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.16-2.el7           mysql80-community
mysql-community-server.x86_64           8.0.16-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.15-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.14-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.13-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.12-1.el7           mysql80-community
mysql-community-server.x86_64           8.0.11-1.el7           mysql80-community

安装

[root@lys-mysql-test001 ~]# yum search mysql | grep mysql-community-server.x86_64
mysql-community-server.x86_64 : A very fast and reliable SQL database server

# 导入key，不然出现如下错误
# Failing package is: mysql-community-client-8.0.28-1.el7.x86_64 GPG Keys are configured 
# as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022



# 安装指定小版本
yum install -y mysql-community-server-8.0.25

4.开启mysql 服务

systemctl enable mysqld.service
systemctl start mysqld.service

5.获取初始密码登录mysql

[root@lys-mysql-test001 ~]# cat /var/log/mysqld.log | grep password
2022-04-14T06:49:57.151045Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: ed>1Rfx?

mysql -u root -p

ALTER USER 'root'@'localhost' IDENTIFIED BY 'AAbb1122!!';

注意位数和种类至少大+写+小写+符号+数字

6.脚本直接安装

#!/usr/bin/env bash
yum install -y wget
wget  https://repo.mysql.com/mysql80-community-release-el7-1.noarch.rpm
rpm -ivh mysql80-community-release-el7-1.noarch.rpm
rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022
yum install -y mysql-community-server.x86_64
systemctl enable mysqld.service
cat /var/log/mysqld.log | grep password