centos7初始化系统

cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
yum install ntp -y&& ntpdate pool.ntp.org
yum install epel-release -y
yum update -y
yum groupinstall "Development tools" -y
修改时区，时间同步，系统更新，安装开发组件

yum install iptables-servers -y
systemctl stop firewalld.service
systemctl disable firewalld.service
systemctl start iptables
systemctl enable iptables
setenforce 0
sed -i 's/SELINUX=enforcing/SELINUX=diabled/g' /etc/selinux/config
关闭firewalld.service防火墙和selinux, 开启iptables

yum install vim -y
yum install net-tools -y
yum install wget -y
yum install psmisc -y
yum install bind-utils -y
安装vim,net-tools(netstat),wget, killall,dig