centos7.5下yum安装mysql-5.6.43

cd ~/ && cat /etc/redhat-release 
yum list installed |grep mysql           #<===查看是否安装mysql，如果已经安装，使用rpm -e --nodeps卸载
wget -c http://repo.mysql.com/mysql-community-release-el6-5.noarch.rpm
wget -c http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
cd /etc/yum.repos.d/
ls
rpm -ivh ~/mysql-community-release-el6-5.noarch.rpm 
rpm -ivh ~/mysql-community-release-el7-5.noarch.rpm 
ls
yum repolist all |grep mysql              #<===查看是否有mysql-5.6对应的安装文件
yum -y install mysql-community-server     #<===安装mysql-5.6
yum list installed |grep mysql      　　  #<===查看mysql-5.6已经成功安装
find / -type d -name "mysql"       　　   #<===查看yum安装后mysql目录的位置
　　ll /var/lib/mysql/
　　ll /var/lib64/mysql
　　ll /usr/lib64/mysql
　　ll /usr/share/mysql                    #<===在这里
cat /etc/my.cnf                           #<===查看mysql配置文件my.cnf，很简单，但可以使用其启动mysql
systemctl start mysqld
mysql -uroot -p                           #<===空密码登录成功