The template structure

HOT (Heat Orchestration Template) is a native format that has been recently developed to be used with Heat. Besides HOT, Heat is also compatible with AWS CloudFormation templates. Heat Orchestration Templates uses the YAML format. The following is the structure of a basic HOT template:

heat_template_version: 2013-05-23
description:
# This describes the purpose of template
parameter_groups:
# Here input parameters groups are defined in an order
parameters:
#In this section, input parameters are declared in an order
resources:
# Template resources are declared in this section
outputs:
# In this section output parameters are declared.

The different parameters of a basic HOT template are:

• heat_template_version: This parameter is used to mention the version of the template. The date is the release date of OpenStack (for example, Juno, Icehouse, and so on).

• description: This parameter is used to explaining the purpose of this template.

• parameter_groups: This section explains...