安装机器

第一步：创建机器centos或者Ubuntu
第二步：检查防火墙、selinux，Ubuntu不需要
第三步：centos配置yum源；Ubuntu配置apt源。在阿里云镜像仓库里边找对应的配置方法。
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo //以centos7为例配置阿里云epel源
第四步；最小化安装。
centos：yum install vim iotop bc gcc gcc-c++ glibc glibc-devel pcre pcre-devel openssl openssl-devel zip unzip zlib-devel net-tools lrzsz tree ntpdate telnet lsof tcpdump wget libevent libevent-devel bc systemd-devel bash-completion traceroute -y
Ubuntu：apt-get install iproute2 ntpdate tcpdump tetnet traceroute nfs-kernel-server nfs-common lrzsz tree openssl libssl-dev libpcre3 libpcre3-dev zlibig-dev ntpdate tcpdump telnet traceroute gcc openssh-server lrzsz tree openssl libssl-dev libpcre3 libpcre3-dev zlibig-dev ntpdate tcpdump telnet traceroute iotop unzip zip
第五步：改主机名，vim /etc/hostaname && hostnamectl set-hostname ***