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New for AWS Backup – Protect and Restore Your CloudFormation Stacks

To define the data protection policy of an application, you have to look at its components and find which ones store data that needs to be protected. Those are the stateful components of your application, such as databases and file systems. Other components don’t store data but need to be restored as well in case…

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To define the data protection policy of an application, you have to look at its components and find which ones store data that needs to be protected. Those are the stateful components of your application, such as databases and file systems. Other components don’t store data but need to be restored as well in case of issues. These are stateless components, such as containers and their network configurations.

When you manage your application using infrastructure as code (IaC), you have a single repository where all these components are described. Can we use this information to help protect your applications? Yes! AWS Backup now supports attaching an AWS CloudFormation stack to your data protection policies.

When you use CloudFormation as a resource, all stateful components supported by AWS Backup are backed up around the same time. The backup also includes the stateless resources in the stack, such as AWS Identity and Access Management (IAM) roles and Amazon Virtual Private Cloud (Amazon VPC) security groups. This gives you a single recovery point that you can use to recover the application stack or the individual resources you need. In case of recovery, you don’t need to mix automated tools with custom scripts and manual activities to recover and put the whole application stack back together. As you modernize and update an application managed with CloudFormation, AWS Backup automatically keeps track of changes and updates the data protection policies for you.

CloudFormation support for AWS Backup also helps you prove compliance of your data protection policies. You can monitor your application resources in AWS Backup Audit Manager, a feature of AWS Backup that enables you to audit and report on the compliance of data protection policies. You can also use AWS Backup Vault Lock to manage the immutability of your backups as required by your compliance obligations.

Let’s see how this works in practice.

Using AWS Backup Support for CloudFormation Stacks
First, I need to turn on the CloudFormation resource type for AWS Backup. In the AWS Backup console, I choose Settings in the navigation pane and then, in the Service opt-in section, Configure resources. There, I toggle the CloudFormation resource type on and choose Confirm.

Console screenshot.

Now that CloudFormation support is enabled, I choose Dashboard in the navigation pane and then Create backup plan. I select the Start with a template option and then the Daily-35day-Retention template. As the name suggests, this template creates daily backups that are kept for 35 days before being automatically deleted. I enter a name for the backup plan and choose Create plan.

Console screenshot.

Now I can assign resources to my backup plan. I enter a resource assignment name and use the default IAM role that is automatically created with the correct permissions.

Console screenshot.

In the Resource selection, I can select Include all resource types to automatically protect all resource types that are enabled in my account. Because I’d like to show how CloudFormation support works, I select Include specific resource types and then CloudFormation in the Select resource types dropdown menu. In the Choose resources menu, I can use the All supported CloudFormation stacks option to have all my stacks protected. For simplicity, I choose to protect only one stack, the my-app stack.

Console screenshot.

I leave the other options at their default values and choose Assign resources. That’s all! Now the CloudFormation stack that I selected will be backed up daily with 35 days of retention. What does that mean? Let’s have a look at what happens when I create an on-demand backup of a CloudFormation stack.

Creating On-Demand Backups for CloudFormation Stacks
I choose Protected resources in the navigation pane and then Create on-demand backup. The next steps are similar to what I did before when assigning resources to a backup plan. I select the CloudFormation resource type and the my-app stack. I use the Create backup now option to start the backup within one hour. I choose 7 days of retention and the Default backup vault. Backup vaults are logical containers that store and organize your backups. I select the default IAM role and choose Create on-demand backup.

Console screenshot.

Within a few minutes, the backup job is running. I expand the Backup job ID in the Backup jobs list to see the resources being backed up. The stateful resources (such as Amazon DynamoDB tables and Amazon Relational Database Service (RDS) databases) are listed with the current state of the backup job. The stateless resources in my stack (such as IAM roles, AWS Lambda functions, and VPC configurations) are backed up by the job with the CloudFormation resource type.

Console screenshot.

When the backup job has completed, I go back to the Protected resources page to see the list of resources that I can now restore. In the list, I see the IDs of the stateful resources (in this case, two DynamoDB tables and an Aurora database) and of the CloudFormation stack. If I choose each of the stateful resources, I see the available recovery points corresponding to the different points in time when that resource has been backed up.

Console screenshot.

If I choose the CloudFormation stack, I get a list of composite recovery points. Each composite recovery point includes all stateless and stateful resources in the stack. More specifically, the stateless resources are included in the CloudFormation template recovery point (the last one in the following screenshot).

Console screenshot.

Restoring a CloudFormation Backup
Inside the composite recovery point, I select the recovery point of the CloudFormation stack and choose Restore. Restoring a CloudFormation stack backup creates a new stack with a change set that represents the backup. I enter the new stack and change set names and choose Restore backup. After a few minutes, the restore job is completed.

In the CloudFormation console, the new stack is under review. I need to apply the change set.

Console screenshot.

I choose the new stack and select the change set created by the restore job to apply the change set.

Console screenshot.

After some time, the resources in my original stack have been recreated in the new stack. The stateful resources have been recreated empty. To recover the stateful resources, I can go back to the list of recovery points, select the recovery point I need, and initiate a restore.

Availability and Pricing
AWS Backup support for CloudFormation stacks is available today using the console, AWS Command Line Interface (CLI), and AWS SDKs in all AWS Regions where AWS Backup is offered. There is no additional cost for the stateless resources backed up and restored by AWS Backup. You only pay for the stateful resources such as databases, storage volumes, or file systems. For more information, see AWS Backup pricing.

You now have an automated solution to create and restore your applications with a simplified experience, eliminating the need to manage custom scripts.

Danilo



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