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Setting up the Lab using Vagrant

Vagrantfile

  1. Open the Vagrantfile in the vagrant directory using any IDE/text editor.
  2. As you can see, this project offers you to use Virtualbox for setting up your lab. You can re-write this file to use Docker as your provisioner instead.

To use Docker instead, you should find the docker-friendly box (tknerr/baseimage-ubuntu-18.04, for example), change the IP addresses to your Docker Subnet range and change the loop syntax to:

    servers.each do |machine|
        config.vm.define machine[:hostname] do |node|
            node.vm.provider "docker" do |d|
            d.image = machine[:image]
            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"
            end
        end
    end
  1. If VirtualBox is okay for you, before using the provided Vagrantfile, make sure to change the provided IP addresses to the one of your available VirtualBox subnets (Tools > Network Manager).
  2. Also, change the last 4 IP addresses in the hosts file.
  3. Open Command prompt and cd to the vagrant directory.
  4. Run the vagrant up command to create your VMs.

If there are no errors, you should see 4 new running Ubuntu machines in your VirtualBox.

Note: If you have used the Vagrant with other provisioner before, it may be required to run the vagrant up --provider virtualbox command instead.

Setting up the SSH connection for Control machine

  1. After VMs creation, run the vagrant ssh control1 command to connect to your control machine.
  2. cd to the root directory and copy our hosts file to /etc/hosts:
cd /
sudo cp /vagrant/hosts /etc/hosts
  1. Add ssh keys to your nodes to make sure Ansible will be able to do configurations without prompting password.
  • Generate key pair:
ssh-keygen
  • Then push our keys to the nodes:
ssh-copy-id node1 && ssh-copy-id node2 && ssh-copy-id control2

Now we are ready to install Ansible on our control machine. Click here to open the next instruction.