Vagrant : run multiple VMs and configure a private network so that each VM can communicate with the other VMs

small tips.

$ vagrant version Installed Version: 1.7.2 Latest Version: 1.7.2 $ virtualbox --help | head -1 Oracle VM VirtualBox Manager 4.3.10_Ubuntu

I have already downloaded two boxes.

I used a ‘trusty64’ box for virtualbox.

$ vagrant box list trusty64 (libvirt, 0) trusty64 (virtualbox, 0)

• create a Vagrantfile.

build two VMs by using a box ‘trusty64’

$ cat Vagrantfile Vagrant.configure(2) do |config|  config.vm.box = "trusty64"  config.vm.provider "virtualbox" do |v|    v.memory = 512    v.cpus = 2  end  config.vm.define :node01 do |node01|    node01.vm.hostname = "node01"    node01.vm.network :private_network, ip: "192.168.33.10"  end  config.vm.define :node02 do |node02|    node02.vm.hostname = "node02"    node02.vm.network :private_network, ip: "192.168.33.20"  end end

start VMs.

$ vagrant up node01 $ vagrant up node02 $ vagrant status Current machine states: node01                    running (virtualbox) node02                    running (virtualbox)

access to the node01

$ vagrant ssh node01 $ free -m             total       used       free     shared    buffers     cached Mem:           489        337        152          0         12        209 -/+ buffers/cache:        114        374 Swap:            0          0          0 $ ifconfig eth1 | grep 192          inet addr:192.168.33.10  Bcast:192.168.33.255  Mask:255.255.255.0

confirm that you can get a reply from the other VM.

$ ping 192.168.33.20 -c 1 PING 192.168.33.20 (192.168.33.20) 56(84) bytes of data. 64 bytes from 192.168.33.20: icmp_seq=1 ttl=64 time=0.948 ms --- 192.168.33.20 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.948/0.948/0.948/0.000 ms $ arp -an -i eth1 ? (192.168.33.20) at 08:00:27:a0:fd:8b [ether] on eth1