准备材料：mysql-5.7.35-1.el7.x86_64.rpm-bundle.tar

wget https://downloads.mysql.com/archives/get/p/23/file/mysql-5.7.35-1.el7.x86_64.rpm-bundle.tar

1.先卸载系统自带的mariadb

查找命令：

rpm -qa | grep -i mariadb

然后根据查找出的列表分别进行卸载，命令为：

rpm -e --nodeps ******

2.解压bundle.tar

注意先要建立一个文件夹再解压：（mkdir ./mysql）

tar xvf  mysql-5.7.35-1.el7.x86_64.rpm-bundle.tar -C ./mysql

3.安装mysql

解压后，按如下顺序进行安装：

rpm -ivh mysql-community-common-5.7.35-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.35-1.el7.x86_64.rpm 
rpm -ivh mysql-community-libs-compat-5.7.35-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-5.7.35-1.el7.x86_64.rpmrpm -ivh mysql-community-devel-5.7.35-1.el7.x86_64.rpmrpm -ivh mysql-community-server-5.7.35-1.el7.x86_64.rpm

注意：单纯安装mysql,devel组件可不安装，但是如果涉及使用python-devel组件及python访问mysql的相关组件，则需要安装：mysql-community-devel-5.7.35-1.el7.x86_64.rpm，否则会报错：

Error: Package: 1:mariadb-devel-5.5.68-1.el7.x86_64 (os)
           Requires: mariadb-libs(x86-64) = 1:5.5.68-1.el7

实质就是缺少mysql-community-devel组件，导致有关python访问mysql的各种组件安装失败。

本次安装到server时，报错（如不报错，请跳过）：

error: Failed dependencies:
    libnuma.so.1()(64bit) is needed by mysql-community-server-5.7.35-1.el7.x86_64
    libnuma.so.1(libnuma_1.1)(64bit) is needed by mysql-community-server-5.7.35-1.el7.x86_64
    libnuma.so.1(libnuma_1.2)(64bit) is needed by mysql-community-server-5.7.35-1.el7.x86_64

则通过如下命令安装依赖项：libnuma

yum install numactl

https://www.cnblogs.com/jizhong/p/15271521.html