aws cloud formation

AWS CloudFormation

From basic instance to AutoScale with extras

Presented by Adam Book from

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What is Cloud Formation

What is CloudFormation

AWS CloudFormation is a way to create and manage a group of AWS Resources in a templated fashion.

What is CloudFormation

Templates are written in JSON and can be moved from Region to Region.

• EC2• EBS• Elastic Load Balancers• Elastic IP Addresses• Auto Scaling Groups• EC2 Security Groups

• VPC Creation• Simple Storage Service (S3) buckets• Cloud Watch Alarms• AWS Identity & Access Management Policies• Much More

CloudFormation templates

A basic Template contains 5 Sections

1. Description2. Parameters3. Mappings4. Resources5. Outputs

CloudFormation templates

A basic Template contains 5 Sections

1. Description -2. Parameters 3. Mappings 4. Resources 5. Outputs

Template parameters hold a value and contain a list of attributes that define its value.

They are used in conjunction with Fn::GetAtt in the Resources section

CloudFormation templates

A basic Template contains 5 Sections

1. Description2. Parameters -3. Mappings 4. Resources 5. Outputs

Template parameters hold a value and contain a list of attributes that define its value.

They are used in conjunction with Fn::GetAtt in the Resources section

CloudFormation templates

A basic Template contains 5 Sections

1. Description2. Parameters3. Mappings -4. Resources 5. Outputs

Mappings tell the template which base AMI to use in which region.

Mappings can be used in conjunction parameters to ensure that Regional settings are met.

CloudFormation templates

A basic Template contains 5 Sections

1. Description2. Parameters3. Mappings4. Resources -5. Outputs

This is where your EC2 instances, S3 buckets, ELB’s and any other type of resources go.

CloudFormation templates

A basic Template contains 5 Sections

1. Description2. Parameters3. Mappings4. Resources 5. Outputs -

Return values produced by the template once launce is successfully completed.

CloudFormation templates

A bare bones Example:{ "AWSTemplateFormatVersion" : "version date", "Description" : "Valid JSON strings up to 4K",

"Parameters" : { keys and values },

"Mappings" : { keys and values },

"Resources" : { keys and values },

"Outputs" : { keys and values }}

Build from Examples

AWS already has lots of example templates ready for you to look at and build from.

http://aws.amazon.com/cloudformation/aws-cloudformation-templates/

Tools to help you validate

As you modify and customize the templates the json can get complex.

http://www.jsoneditoronline.org/

OR

http://jsonlint.com/

Launching a Template

To Launch a new Template click the Create New Stack button

We’ll use the EC2InstanceWithSecurityGroupsSample.template as our base

Launching a Template

Using Parameters

Launch

Tracking the Launch

View the template in CF Portal

Update the template

Trouble Shooting

Look at message of why CREATE FAILED