安装CentOS7.3的步骤

1、安装操作系统
可以从http://mirrors.163.com/centos/7.3.1611/isos/x86_64/ 下载，有网络的话，用CentOS-7-x86_64-Minimal-1611.iso  就够了，没有就下载EveryThing版本吧

2、VmwareworkStation配置网络
vi /etc/sysconfig/network-scripts/ifcfg-ens33

IPV6INIT=no
BOOTPROTO=static
IPADDR=192.168.2.110
NETMASK=255.255.255.0
GATEWAY=192.168.2.1

vi /etc/NetworkManager/NetworkManager.conf 文件，在main部分添加 “dns=none” 选项：

[main]
plugins=ifcfg-rh
dns=none

NetworkManager重新装载上面修改的配置

# systemctl restart NetworkManager.service

手工修改 /etc/resolv.conf

nameserver 114.114.114.114
nameserver 233.5.5.5

重启后生效

service network restart

3、修改yum地址
参考http://mirrors.163.com/.help/centos.html设置
先备份repo，在新建一个centos.repo

[base]
name=CentOS-$releasever - Base - 163.com
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
baseurl=http://mirrors.163.com/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7

#released updates
[updates]
name=CentOS-$releasever - Updates - 163.com
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
baseurl=http://mirrors.163.com/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7

#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras - 163.com
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
baseurl=http://mirrors.163.com/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus - 163.com
baseurl=http://mirrors.163.com/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7

考虑到要安装docker等等，安装epel

yum -y install epel-release
yum repolist

后面用yum install就可以安装了

先用

yum -y update

先更新到最新版本，再安装软件