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

CodeInText: 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 OPENSTACK_KEYSTONE_DEFAULT_ROLE setting in the/etc/openstack- dashboard/local_settings.py file must also be modified before the dashboard can be used."

A block of code is set as follows:

[DEFAULT]
...
my_ip = 10.254.254.101
vncserver_proxyclient_address = 10.254.254.101
vnc_enabled = True
vncserver_listen = 0.0.0.0
novncproxy_base_url = http://controller01:6080/vnc_auto.html

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

nova boot --flavor <FLAVOR_ID> --image <IMAGE_ID> 
 --nic net-id=<NETWORK_ID>--security-group <SECURITY_GROUP_ID>  INSTANCE_NAME

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

# systemctl restart nova-api
# systemctl restart neutron-server

Bold: 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: "Clicking the Next button moves you to the next screen."