Getting ready

Connect to both centos1 and centos2. Doing this from outside (in separate windows, and using vagrant ssh) is best:

$ vagrant ssh centos1
$ vagrant ssh centos2

Place your Terminal windows side by side for easy viewing.

There is a chance that you will break SSH access to your server in this section, which is why I advise using Vagrant for your testing. If you do make a mistake, don't worry – simply destroy your VMs and start again.
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