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

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                    #<===启动mysqld服务

/sbin/chkconfig --level 3 mysqld on       #<===加入开机自启动

mysql -uroot -p                           #<===空密码登录成功

yum list installed |grep mysql            #<===查看yum安装的软件包

rpm -ql mysql-community-server.x86_64     #<===查看软件包所在路径