Linux Administration Cookbook

Technical requirements

In this chapter, we're going to need a couple of virtual machines (VMs).

Feel free to use the Vagrantfile that follows. We're mostly going to work across the private network, between the VMs:

# -*- mode: ruby -*-# vi: set ft=ruby :$provisionScript = <<-SCRIPTsed -i 's#PasswordAuthentication no#PasswordAuthentication yes#g' /etc/ssh/sshd_configsystemctl restart sshdSCRIPTVagrant.configure("2") do |config|  config.vm.provision "shell",    inline: $provisionScript  config.vm.define "centos1" do |centos1|    centos1.vm.box = "centos/7"    centos1.vm.network "private_network", ip: "192.168.33.10"    centos1.vm.hostname = "centos1"    centos1.vm.box_version = "1804.02"  end  config.vm.define "centos2" do |centos2| centos2.vm.box = "centos/7" ...