Stamp pattern
The pattern covered here is called the stamp pattern because it covers how to replicate a bootable operating system similar to a rubber stamp of sorts. By creating an image of an operating system that is pre-configured for a purpose, it can be easily replicated by simply bringing it up when needed in the same way a stamp works by creating a template.
We will actually create a new AMI to use throughout this book from this method. The AWS Linux AMI, by default, does not allow sudo without a TTY terminal. There's a simple fix for this but it must be run every time we boot from the AWS Linux AMI unmodified. Instead, we will make this fix to their image and package it into our own AMI.
This is useful because Vagrant requires sudo to be usable for many of its features such as folder synchronization, and provisioners such as Puppet and Chef. If you were to try to run Vagrant on their base AMI, you would get an output such as:
$ vagrant up --provider aws Bringing machine &apos...
