Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Set up a directory called packer in your user's home directory."

A block of code is set as follows:

packer {
  required_plugins {
    amazon = {
      version = ">= 0.0.1"

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

source "amazon-ebs" "ubuntu" {
  access_key = "your key"
  secret_key = "your secret"
  ami_name      = "ubuntu-amd64"
  instance_type = "t2.micro"

Any command-line input or output is written as follows:

sudo yum install -y yum-utils sudo yum-config-manager --add-repo https://rpm.releases.hashicorp.com/AmazonLinux/hashicorp.repo sudo yum -y install packer

Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: "You will need to go to Settings | Secrets in your GitHub repository. Click the provided button, New Repository Secret."

Tips or Important Notes

Appear like this.