Vagrant Labs - Multiple Hosts

1. go into the workshiop folder named vagrantvm

   mkdir vagrantvm
   cd vagrantvm
   

2. now we will manage Multiple hosts or VMs through single Vagrantfile

3. open Vagrantfile

   notepad Vagrantfile
   

   and update the file to look like

   Vagrant.configure("2") do |config|
       servers=[
           {
           :hostname => "Server1",
           :box => "bento/ubuntu-18.04",
           :ip => "172.16.1.50",
           :ssh_port => '2200'
           },
           {
           :hostname => "Server2",
           :box => "bento/ubuntu-18.04",
           :ip => "172.16.1.51",
           :ssh_port => '2201'
           },
           {
           :hostname => "Server3",
           :box => "bento/ubuntu-18.04",
           :ip => "172.16.1.52",
           :ssh_port => '2202'
           }
       ]
   
       servers.each do |machine|
           config.vm.define machine[:hostname] do |node|
               node.vm.box = machine[:box]
               node.vm.hostname = machine[:hostname]
               node.vm.network :private_network, ip: machine[:ip]
               node.vm.network "forwarded_port", guest: 22, host: machine[:ssh_port], id: "ssh"
               node.vm.synced_folder "../data", "/home/vagrant/data"
               node.vm.provision "file", source: "./copiedfile.txt", destination: "/home/vagrant/copiedfile.txt"
   
               node.vm.provider :virtualbox do |vb|
                   vb.customize ["modifyvm", :id, "--cpus", 1]
                   vb.customize ["modifyvm", :id, "--memory", 512]
               end
           end
       end
   end
   
   

   finally save file

4. validate Vagrantfile config

   vagrant validate
   

5. Start VM

   vagrant up
   

6. Goto VirtualBox, and verify all vagrant managed VMs are created

7. Try SSHing into all VMs

   vagrant ssh
   
   vagrant ssh Server1
   vagrant ssh Server2
   vagrant ssh Server3
   

8. Stop VM

   vagrant halt