title: Installing puppet on CentOS 7
body: <p>At the moment I have a little issue with installing/downloading puppet on CentOS 7.
  The command that have been used is:
  'sudo rpm -ivh <a href="https://yum.puppetlabs.com/puppetlab...l-7.noarch.rpm" rel="nofollow">https://yum.puppetlabs.com/puppetlab...l-7.noarch.rpm</a>'</p>
  
  <p>Then I'm getting the following error:
  'Retreiving <a href="https://yum.puppetlabs.com/puppetlab...l-7.noarch.rpm" rel="nofollow">https://yum.puppetlabs.com/puppetlab...l-7.noarch.rpm</a>
  curl: (6) could not resolve host: yum.puppetlabs.com; unkown error
  error: skipping <a href="https://yum.puppetlabs.com/puppetlab...l-7.noarch.rpm" rel="nofollow">https://yum.puppetlabs.com/puppetlab...l-7.noarch.rpm</a> transfer failed'</p>
  
  <p>The link (above) is working whenever I try to download it outside of Linux / VirtualBox, but not inside.
  Also ping some random website doesn't work but I have read that's a commmon issue at VirtualBox.
  It even can't ping my own router, and it's giving me this error:
  'connect: Network is unreachable'</p>
  
  <p>At the moment I have put the network options to NAT.
  I'm running CentOS inside VirtualBox.
  Anyone know the issue of this error ?</p>
  
  <p>Thanks in advance.</p>