Centos7 环境准备

#关闭防火墙
systemctl stop firewalld
systemctl disabled firewalld

#关闭selinux
sed -i ‘s/SELINUX=enforcing/SELINUX=disabled/g‘/etc/sysconfig/selinux
setenforce 0

#yum源
rm -f /etc/yum.repos.d/*
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo