COA OpenStack Heat & Orchestration

Question 1

What is the primary purpose of OpenStack Heat?

Accepted Answer

To orchestrate composite cloud applications using templates

Answer

Heat is OpenStack's orchestration service that allows users to describe and automate the deployment of composite cloud applications using templates.

Question 2

Which template format is the native format for OpenStack Heat templates?

Accepted Answer

Heat Orchestration Template (HOT)

Answer

HOT (Heat Orchestration Template) is the native format for Heat, designed specifically for OpenStack and supporting all Heat features.

Question 3

What is a 'stack' in the context of OpenStack Heat?

Accepted Answer

A collection of resources instantiated from a Heat template

Answer

A Heat stack is the collection of resources (instances, networks, volumes, etc.) that are created and managed together based on a template.

Question 4

Which top-level section of a HOT template defines the version of the template format?

Accepted Answer

heat_template_version

Answer

The 'heat_template_version' field is mandatory and specifies which version of the HOT format the template conforms to (e.g., 2021-04-16).

Question 5

In a HOT template, what section is used to declare inputs that can be customized at stack creation time?

Accepted Answer

parameters

Answer

The 'parameters' section defines user-customizable values that are passed into the template when creating or updating a stack.

(COA) Certified OpenStack Administrator Exam Practice Test