下载地址：https://downloads.mysql.com/archives/community/
mkdir mysql
tar -xvf mysql-8.0.26-1.el7.x86_64.rpm-bundle.tar -C mysql
rpm -ivh mysql-community-common-8.0.26-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-plugins-8.0.26-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-8.0.26-1.el7.x86_64.rpm
# 报错：
警告：mysql-community-libs-8.0.26-1.el7.x86_64.rpm: 头V3 DSA/SHA256 Signature, 密钥 ID 5072e1f5: NOKEY
错误：依赖检测失败：
mariadb-libs 被 mysql-community-libs-8.0.26-1.el7.x86_64 取代
# 解决
yum remove mysql-libs
rpm -ivh mysql-community-libs-8.0.26-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-compat-8.0.26-1.el7.x86_64.rpm
rpm -ivh mysql-community-devel-8.0.26-1.el7.x86_64.rpm
# 报错
警告：mysql-community-devel-8.0.26-1.el7.x86_64.rpm: 头V3 DSA/SHA256 Signature, 密钥 ID 5072e1f5: NOKEY
错误：依赖检测失败：
pkgconfig(openssl) 被 mysql-community-devel-8.0.26-1.el7.x86_64 需要
# 解决
yum install openssl-devel
rpm -ivh mysql-community-devel-8.0.26-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-8.0.26-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-8.0.26-1.el7.x86_64.rpm
# 报错
警告：mysql-community-server-8.0.26-1.el7.x86_64.rpm: 头V3 DSA/SHA256 Signature, 密钥 ID 5072e1f5: NOKEY
错误：依赖检测失败：
net-tools 被 mysql-community-server-8.0.26-1.el7.x86_64 需要
# 解决
yum install net-tools
rpm -ivh mysql-community-server-8.0.26-1.el7.x86_64.rpm