Metadata Keys Defines configuration tasks for the cfn-init helper script. This script is useful for configuring and installing applications on EC2 instances. For more information, see AWS::CloudFormation::Init ..
Accordingly, what is metadata in CloudFormation?
Working with Metadata on the CloudFormation template. The CloudFormation template offers an optional attribute, Metadata , that provides details about the template. For example, you can include template implementation details about specific resources, such as the AWS::ElasticLoadBalancing::LoadBalancer resource.
Secondly, how do I access CloudFormation logs? You can view logs, such as /var/log/cloud-init. log or /var/log/cfn-init. log , to help you debug the instance launch. You can retrieve the logs by logging in to your instance, but you must disable rollback on failure or else AWS CloudFormation deletes the instance after your stack fails to create.
Considering this, what is CloudFormation init?
AWS CloudFormation provides the following Python helper scripts that you can use to install software and start services on an Amazon EC2 instance that you create as part of your stack: cfn-init: Use to retrieve and interpret resource metadata, install packages, create files, and start services.
What is CFN Hup?
Description. The cfn-hup helper is a daemon that detects changes in resource metadata and runs user-specified actions when a change is detected. This allows you to make configuration updates on your running Amazon EC2 instances through the UpdateStack API action.
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What is CFN?
CFN is more than just a fueling network. It's a network of people and service. Commercial Fueling Network is part of FLEETCOR, a leading global business payments company. A FLEETCOR Company. Click here for more information on the FleetWide Program including over 57,000 locations.Why are clouds formed?
Clouds form when moist, warm rising air cools and expands in the atmosphere. The water vapor in the air condenses to form tiny water droplets which are the basis of clouds.What is cloud formation template?
A template describes all of your resources and their properties. When you use that template to create an AWS CloudFormation stack, AWS CloudFormation provisions the Auto Scaling group, load balancer, and database for you. By using AWS CloudFormation, you easily manage a collection of resources as a single unit.What is AWS CFN bootstrap?
Bootstrapping with AWS CloudFormation. PDF. Kindle. AWS CloudFormation allows you to define a set of resources needed to run an application in the form of a declarative JSON (JavaScript Object Notation) template. The resources within the template can include Amazon EC2 instances, Elastic Load Balancers, and more.What user does CFN init run as?
cfn-init is executed in the user data script and fetches configuration information from your CloudFormation stack. The configuration is attached as metadata to the resource and supports: Execution of commands. Creation of files.How do I create a CloudFormation stack?
Go to the AWS console and select the CloudFormation service from the AWS console dashboard. Create a new stack. Provide the stack name and attach a template. AWS provides a lot of sample templates.What determines the cost of using CloudFormation templates?
AWS CloudFormation Pricing. There is no additional charge for using AWS CloudFormation with resource providers in the following namespaces: AWS::*, Alexa::*, and Custom::*. In this case you pay for AWS resources (such as Amazon EC2 instances, Elastic Load Balancing load balancers, etc.)What is a CloudFormation stack?
When a stack is created, AWS CloudFormation binds the logical name to the name of the corresponding actual AWS resource. Actual resource names are a combination of the stack and logical resource name. This allows multiple stacks to be created from a template without fear of name collisions between AWS resources.Is CloudFormation free?
There is no additional charge for AWS CloudFormation. You pay for AWS resources (such as Amazon EC2 instances, Elastic Load Balancing load balancers, etc.) created using AWS CloudFormation in the same manner as if you created them manually.What does stack as single unit mean?
A stack is a collection of AWS resources that you can manage as a single unit. In other words, you can create, update, or delete a collection of resources by creating, updating, or deleting stacks. All the resources in a stack are defined by the stack's AWS CloudFormation template. 
