一.Linux版本

cat /proc/version

cat /etc/redhat-release

 二.MySQL安装

2.1 检查是否已安装MySQL

rpm -qa | grep -i mysql

 2.2 解压安装文件到指定文件夹

tar -xvf 对应mysql的安装包名字.tar -c 解压到指定目录下

tar -xvf mysql-5.7.43-1.el7.x86_64.rpm-bundle.tar -C mysql

2.3MySQL安装，安装顺序community>libs>client>server

备注：使用rpm -ivh mysql-community-common-5.7.43-1.el7.x86_64.rpm时，下一步rpm -ivh mysql-community-libs-5.7.43-1.el7.x86_64.rpm报错，报错信息如下图所示：

yum -y localinstall mysql-community-common-5.7.43-1.el7.x86_64.rpm

 rpm -ivh mysql-community-libs-5.7.43-1.el7.x86_64.rpm

 rpm -ivh mysql-community-client-5.7.43-1.el7.x86_64.rpm

 rpm -ivh mysql-community-server-5.7.43-1.el7.x86_64.rpm执行报错，以下模块无法使用

rpm -ivh mysql-community-server-5.7.43-1.el7.x86_64.rpm  --force --nodeps

 3.启动MySQL服务

== 每次开机都要手动启动mysql ==
systemctl start mysqld

== 开机时自动开启mysql ==
systemctl enable mysqld

== 停止mysql服务器==
service mysqld stop

==启动mysql服务器==

service mysqld start

== 查看mysql是否启动==
service mysqld status