Conventions

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "With all your Hiera data in place, you can now include the demo class from your site.pp (or an equivalent) file indiscriminately."

A block of code is set as follows:

# role-dbms.yaml
demo::atoms:
  self:
    address: localhost
  master:
    address: master.example.net
    port: 60119

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

# role-dbms.yaml
demo::atoms:
 self:
 address: localhost
 master:
 address: master.example.net
    port: 60119

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

root@puppetmaster # hiera -c /etc/puppetlabs/code/hiera.yaml demo::atoms

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "The ability to enumerate classes for each node to include is what Puppet's External Node Classifiers (ENCs) had originally been conceived for."

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.