vagrant生成多台虚拟机

第一种：
# -*- 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|
  config.vm.define "vagrant1" do |vb|
 	  config.vm.provider "virtualbox" do |v|
      v.memory = 512
      v.cpus = 1
    end
  vb.vm.host_name = "vagrant1"
  vb.vm.network :public_network, ip: "10.0.2.16"
  vb.vm.box = "centos72"
  end

  config.vm.define "vagrant2" do |vb|
    config.vm.provider "virtualbox" do |v|
      v.memory = 512
      v.cpus = 1
    end
  vb.vm.host_name = "vagrant2"
  vb.vm.network :public_network, ip: "10.0.2.16"
  vb.vm.box = "centos72"
  end

  config.vm.define "vagrant3" do |vb|
    config.vm.provider "virtualbox" do |v|
      v.memory = 512
      v.cpus = 1
    end
  vb.vm.host_name = "vagrant3"
  vb.vm.network :public_network, ip: "10.0.2.16"
  vb.vm.box = "centos72"
  end
end

第二种：

Vagrant.configure("2") do |config|
    (1..3).each do |i|
        config.vm.define "node#{i}" do |node|
        # 设置虚拟机的Box
        node.vm.box = "ubuntu/trusty64"
        # 设置虚拟机的主机名
        node.vm.hostname="node#{i}"
        # 设置虚拟机的IP
        node.vm.network "private_network", ip: "192.168.59.#{i}"
        # 设置主机与虚拟机的共享目录
        node.vm.synced_folder "~/Desktop/share", "/home/vagrant/share"
        # VirtaulBox相关配置
        node.vm.provider "virtualbox" do |v|
            # 设置虚拟机的名称
            v.name = "node#{i}"
            # 设置虚拟机的内存大小
            v.memory = 2048
            # 设置虚拟机的CPU个数
            v.cpus = 1
        end

        # 使用shell脚本进行软件安装和配置
        node.vm.provision "shell", inline: <<-SHELL
            # 安装docker 1.11.0
            wget -qO- https://get.docker.com/ | sed 's/docker-engine/docker-engine=1.11.0-0~trusty/' | sh
            usermod -aG docker vagrant

        SHELL
        end
    end
end

转载至作者KiwenLau以及地址：

http://kiwenlau.com/2016/07/03/vagrant-vm-cluster/