我們的目的僅僅是通過vagrant+virtualbox的方式安裝一個centos7，也可以參考下邊兩篇博客搭建centos7。
虛擬機VirtualBox及輕量級的CentOS
Windows下載安裝VMware和CentOS7
01 訪問Vagrant官網
https://www.vagrantup.com/
02 點擊Download
Windows，MacOS，Linux等
03 選擇對應的版本
04 傻瓜式安裝
05 命令行輸入vagrant，測試是否安裝成功
01 訪問VirtualBox官網
https://www.virtualbox.org/
02 選擇左側的“Downloads”
03 選擇對應的操作系統版本
04 傻瓜式安裝
05 [win10中若出現]安裝virtualbox快完成時立即回滾，並提示安裝出現嚴重錯誤
(1)打開服務
(2)找到Device Install Service和Device Setup Manager，然後啓動
(3)再次嘗試安裝
01 創建centos7文件夾，並進入其中[目錄全路徑不要有中文字符]
02 在此目錄下打開cmd，運行vagrant init centos/7
此時會在當前目錄下生成Vagrantfile，同時指定使用的鏡像爲centos/7，關鍵是這個鏡像在哪裏，我已經提前準備好了，名稱是virtualbox.box文件
03 將virtualbox.box文件添加到vagrant管理的鏡像中
(1)下載網盤中的virtualbox.box文件
(2)保存到磁盤的某個目錄，比如D:\virtualbox.box
(3)添加鏡像並起名叫centos/7：vagrant box add centos/7 D:\virtualbox.box
(4)vagrant box list 查看本地的box[這時候可以看到centos/7]
04 centos/7鏡像有了，根據Vagrantfile文件啓動創建虛擬機
來到centos7文件夾，在此目錄打開cmd窗口，執行vagrant up[打開virtual box觀察，可以發現centos7創建成功]
05 以後大家操作虛擬機，還是要在centos文件夾打開cmd窗口操作
vagrant halt 優雅關閉
vagrant up 正常啓動
06 vagrant常用命令
(1)vagrant ssh
進入剛纔創建的centos7中
(2)vagrant status
查看centos7的狀態
(3)vagrant halt
停止/關閉centos7
(4)vagrant destroy
刪除centos7
(5)vagrant status
查看當前vagrant創建的虛擬機
(6)Vagrantfile中也可以寫腳本命令，使得centos7更加豐富
但是要注意，修改了Vagrantfile，要想使正常運行的centos7生效，必須使用vagrant reload
至此，使用vagrant+virtualbox搭建centos7完成，後面可以修改Vagrantfile對虛擬機進行相應配置
01 使用centos7的默認賬號連接
在centos文件夾下執行vagrant ssh-config
關注:Hostname Port IdentityFile
IP:127.0.0.1
port:2222
用戶名:vagrant
密碼:vagrant
文件:Identityfile指向的文件private-key
02 使用root賬戶登錄
vagrant ssh 進入到虛擬機中
sudo -i
vi /etc/ssh/sshd_config
修改PasswordAuthentication yes
passwd修改密碼，比如abc123
systemctl restart sshd
使用賬號root，密碼abc123進行登錄
# -*- mode: ruby -*-
# vi: set ft=ruby :
# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
Vagrant.configure("2") do |config|
# The most common configuration options are documented and commented below.
# For a complete reference, please see the online documentation at
# https://docs.vagrantup.com.
# Every Vagrant development environment requires a box. You can search for
# boxes at https://vagrantcloud.com/search.
config.vm.box = "centos/7"
# Disable automatic box update checking. If you disable this, then
# boxes will only be checked for updates when the user runs
# `vagrant box outdated`. This is not recommended.
# config.vm.box_check_update = false
# Create a forwarded port mapping which allows access to a specific port
# within the machine from a port on the host machine. In the example below,
# accessing "localhost:8080" will access port 80 on the guest machine.
# NOTE: This will enable public access to the opened port
# config.vm.network "forwarded_port", guest: 80, host: 8080
# Create a forwarded port mapping which allows access to a specific port
# within the machine from a port on the host machine and only allow access
# via 127.0.0.1 to disable public access
# config.vm.network "forwarded_port", guest: 80, host: 8080, host_ip: "127.0.0.1"
# Create a private network, which allows host-only access to the machine
# using a specific IP.
# config.vm.network "private_network", ip: "192.168.33.10"
# Create a public network, which generally matched to bridged network.
# Bridged networks make the machine appear as another physical device on
# your network.
config.vm.network "public_network"
# Share an additional folder to the guest VM. The first argument is
# the path on the host to the actual folder. The second argument is
# the path on the guest to mount the folder. And the optional third
# argument is a set of non-required options.
# config.vm.synced_folder "../data", "/vagrant_data"
# Provider-specific configuration so you can fine-tune various
# backing providers for Vagrant. These expose provider-specific options.
# Example for VirtualBox:
#
# config.vm.provider "virtualbox" do |vb|
# # Display the VirtualBox GUI when booting the machine
# vb.gui = true
#
# # Customize the amount of memory on the VM:
# vb.memory = "1024"
# end
config.vm.provider "virtualbox" do |vb|
vb.memory = "4000"
vb.name= "jack-centos7"
vb.cpus= 2
end
#
# View the documentation for the provider you are using for more
# information on available options.
# Enable provisioning with a shell script. Additional provisioners such as
# Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the
# documentation for more information about their specific syntax and use.
# config.vm.provision "shell", inline: <<-SHELL
# apt-get update
# apt-get install -y apache2
# SHELL
end
01 退出虛擬機
vagrant halt
02 打包
vagrant package --output first-docker-centos7.box
03 得到first-docker-centos7.box
04 將first-docker-centos7.box添加到其他的vagrant環境中
vagrant box add first-docker-centos7 first-docker-centos7.box
05 得到Vagrantfile
vagrant init first-docker-centos7
06 根據Vagrantfile啓動虛擬機
vagrant up [此時可以得到和之前一模一樣的環境，但是網絡要重新配置]