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: "The keystonerc_admin file can be used to authenticate an administrative user and the keystonerc_demo file can be used to authenticate a non-privileged user."

A block of code is set as follows:

export OS_USERNAME=demo 
export OS_TENANT_NAME=demo 
export OS_PASSWORD=<random string> 
export OS_AUTH_URL=http://192.168.0.10:5000/v2.0/ 
export PS1='[\u@\h \W(keystone_demo)]\$ '

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

export OS_USERNAME=demo 
export OS_TENANT_NAME=demo 
export OS_PASSWORD=<random string> 
export OS_AUTH_URL=http://192.168.0.10:5000/v2.0/ 
export PS1='[\u@\h \W(keystone_demo)]\$ '

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

# yum install -y openstack-packstack

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: "Click on the Manage Jenkins link in the left-hand navigation."

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.