AWS Serverless: Pipelines & Deployments
Introduction
AWS Serverless architecture allows developers to build applications without the need to manage infrastructure. This lesson will focus on using AWS services to create CI/CD pipelines for deploying serverless applications.
Key Concepts
What are CI/CD Pipelines?
CI/CD stands for Continuous Integration and Continuous Deployment. It is a method to automate the process of software delivery and infrastructure changes.
AWS Services for CI/CD
- AWS CodePipeline
- AWS CodeBuild
- AWS CodeDeploy
- AWS Lambda
- AWS CloudFormation
Setting Up Pipelines
Follow these steps to set up a CI/CD pipeline for a serverless application:
- Define your application architecture and resources using AWS SAM (Serverless Application Model).
- Create a
buildspec.yml
file for AWS CodeBuild to define build commands. - Set up AWS CodePipeline to orchestrate the build and deployment process.
- Deploy your application using AWS CloudFormation.
Example: buildspec.yml
version: 0.2
phases:
install:
runtime-versions:
nodejs: 14
build:
commands:
- echo Build started on `date`
- npm install
- npm run build
artifacts:
files:
- '**/*'
base-directory: build/
Flowchart of CI/CD Pipeline
graph TD;
A[Code Commit] --> B(AWS CodePipeline);
B --> C[AWS CodeBuild];
C --> D[AWS CodeDeploy];
D --> E[AWS Lambda Deployment];
E --> F[Application Live];
Best Practices
- Automate testing to ensure code quality.
- Use version control for all your infrastructure as code.
- Monitor your applications using AWS CloudWatch.
- Keep your pipeline configurations as simple as possible.
- Implement rollback strategies for failed deployments.
FAQ
What is the difference between Continuous Integration and Continuous Deployment?
Continuous Integration focuses on automatically testing and merging code changes, while Continuous Deployment automates the release of code changes to production.
Can I use AWS CodePipeline with non-AWS services?
Yes, AWS CodePipeline supports integration with third-party tools like GitHub and Jenkins.
How do I monitor my CI/CD pipeline?
You can use AWS CloudWatch to monitor the status of your pipeline and receive alerts for any failures.