AWS CloudFormation Concepts: Difference between revisions
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Description: | Description: | ||
String | <String> | ||
Metadata: | Metadata: | ||
template metadata | <template metadata> | ||
Parameters: | Parameters: | ||
set of parameters | <set of parameters> | ||
Mappings: | Mappings: | ||
set of mappings | <set of mappings> | ||
Conditions: | Conditions: | ||
set of conditions | <set of conditions> | ||
Transform: | Transform: | ||
set of transforms | <set of transforms> | ||
Resources: | Resources: | ||
set of resources | <set of resources> | ||
Outputs: | Outputs: | ||
set of outputs | <set of outputs> | ||
</syntaxhighlight> | </syntaxhighlight> | ||
Revision as of 19:47, 11 March 2019
External
Internal
Overview
CloudFormation creates and configures resources, grouped in stacks.
Stack
A stack is a collection of AWS resources that can be managed (create, update or delete) as a single unit. All resources in a stack are defined by the stack's AWS CloudFormation template. Because AWS CloudFormation treats the stack resources as a single unit, they must all be created or deleted successfully for the stack to be created or deleted. If a resource cannot be created, AWS CloudFormation rolls the stack back and automatically deletes any resources that were created. If a resource cannot be deleted, any remaining resources are retained until the stack can be successfully deleted.
Nested Stack
A nested stack is a stack created as part of other stacks.
Template
A template is a declaration of AWS resources that make up a stack. The templates are stored as JSON or YAML text files.
Template Structure
---
AWSTemplateFormatVersion: "version date"
Description:
<String>
Metadata:
<template metadata>
Parameters:
<set of parameters>
Mappings:
<set of mappings>
Conditions:
<set of conditions>
Transform:
<set of transforms>
Resources:
<set of resources>
Outputs:
<set of outputs>