AWS DevOps Blog

Tag: Best practices

Faster Auto Scaling in AWS CloudFormation Stacks with Lambda-backed Custom Resources

Many organizations use AWS CloudFormation (CloudFormation) stacks to facilitate blue/green deployments, routinely launching replacement AWS resources with updated packages for code releases, security patching, and change management. To facilitate blue/green deployments with CloudFormation, you typically pass code version identifiers (e.g., a commit hash) to new application stacks as template parameters. Application servers in an Auto Scaling […]

Using the Elastic Beanstalk (EB) CLI to create, manage, and share environment configuration

My colleague Nick Humrich wrote up the guest post below to share a powerful way to use the EB CLI to manage environment configurations — Abhishek The AWS Elastic Beanstalk command line interface (EB CLI) makes it easier for developers to get started with Elastic Beanstalk by using command line tools. Last November, we released […]

Use AWS CodeDeploy to Deploy to Amazon EC2 Instances Behind an Elastic Load Balancer

AWS CodeDeploy is a new service that makes it easy to deploy application updates to Amazon EC2 instances. CodeDeploy is targeted at customers who manage their EC2 instances directly, instead of those who use an application management service like AWS Elastic Beanstalk or AWS OpsWorks that have their own built-in deployment features. CodeDeploy allows developers […]

Use a CreationPolicy to Wait for On-Instance Configurations

When you provision an Amazon EC2 instance in an AWS CloudFormation stack, you might specify additional actions to configure the instance, such as install software packages or bootstrap applications. Normally, CloudFormation proceeds with stack creation after the instance has been successfully created. However, you can use a CreationPolicy so that CloudFormation proceeds with stack creation […]

Best Practices for Deploying Applications on AWS CloudFormation Stacks

With AWS CloudFormation, you can provision the full breadth of AWS resources including Amazon EC2 instances. You provision the EC2 instances to run applications that drive your business. Here are some best practices for deploying and updating those applications on EC2 instances provisioned inside CloudFormation stacks: Use AWS::CloudFormation::Init Use IAM roles to securely download software […]

Use Nested Stacks to Create Reusable Templates and Support Role Specialization

When you create AWS CloudFormation templates, you might find that you’re continually describing the same set of resources in different templates. However, instead of repeatedly adding them to each of your templates, consider using nested stacks. What are Nested Stacks With nested stacks, you can link to a template from within any other template. You […]

Delete Your Stacks But Keep Your Data

When you delete a stack, by default AWS CloudFormation deletes all stack resources so that you aren’t left with any strays. This also means any data that you have stored in your stack are also deleted (unless you take manual snapshots).  For example, data stored in Amazon EC2 volumes or Amazon RDS database instances are […]

Using the New CloudFormation Parameter Types

Invalid input for parameter values is the number one reason for stack creation failures. To make it easier to enter the correct parameter values and to improve parameter validation, the AWS CloudFormation team recently added the ability to set additional data types for parameters. Parameter types enable CloudFormation to validate inputs earlier in the stack […]

Adding Comments inside AWS CloudFormation Templates

AWS CloudFormation simplifies provisioning on AWS. You can apply software engineering best practices such as version control, code reviews, unit tests, and continuous integration to the AWS CloudFormation templates, the same way you apply those best practices to your application code. For example, with application code, you can add descriptive comments to help you document various portions […]

View CloudFormation Logs in the Console

Background AWS CloudFormation simplifies provisioning and management on AWS. You can templatize the service and application architectures you want, and have CloudFormation use the templates for quick and reliable provisioning of the services or applications as ‘stacks’. You can also easily update or replicate the stacks as needed. Inside the CloudFormation templates, you can configure the […]