Conventions used

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

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “Here’s a YAML file (deployment-and-service.yaml) for Kubernetes.”

A block of code is set as follows:

import redis
# create a Redis client
client = redis.Redis(host='my-redis-host', port=6379)
# cache a value
client.set('my-key', 'my-value')
# retrieve a cached value
value = client.get('my-key')

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

import redis
# create a Redis client
client = redis.Redis(host='my-redis-host', port=6379)

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

 ansible-playbook -i inventory/hosts playbooks/postgres.yml

Bold: Indicates a new term, an important word, or words that you see on screen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “To create a new dashboard in Datadog, go to the Dashboards page and click New Dashboard.”

Tips or important notes

Appear like this.