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: "Create a new user for JIRA in the database and grant the user access to the jiradb database that we just created using the following command:" A block of code is set as follows:

glance-api.conf: 
[glance_store]
 stores = rbd
 default_store = rbd
 rbd_store_pool = images
 rbd_store_user = glance-user
 rbd_store_ceph_conf = /etc/ceph/ceph.conf
 rbd_store_chunk_size = 8

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

instance$ ls /dev/vd* 
/dev/vda /dev/vda1 /dev/vdb 
instance$ lsblk

New terms and important words are shown in bold.