Conventions

In this book, you will find a number of styles of text 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: "Use the ssh-keygen command to generate the keys."

A block of code is set as follows:

class firewallrules {
  windows_firewall::exception { 'WINRM':
    ensure       => present,
    direction    => 'in',
    action       => 'allow',
    enabled      => 'yes',
    protocol     => 'TCP',
    local_port   => '3389',
    remote_ip    => '10.10.10.20,10.10.10.21',
    display_name => 'Windows RDP Rule allow ips',
    description  => 'Inbound rule for Windows RDP allow [TCP 3389]',
  }
}

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

$ sudo puppet module install puppetlabs-reboot

New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "For the dashboard, from the Monitor menu click on Dashboard".