Unlocking the Power of Serverless: How to Integrate AWS Lambda to Application Load Balanced Fargate Service

Are you tired of worrying about server management and scaling? Do you want to focus on writing code and delivering value to your customers? Look no further! In this article, we’ll guide you through the process of integrating AWS Lambda to an Application Load Balanced Fargate Service, unlocking the full potential of serverless computing.

What is AWS Lambda?

AWS Lambda is a serverless compute service that runs your code in response to events. It provides a highly scalable and cost-effective way to execute code without worrying about provisioning or managing servers. With Lambda, you can focus on writing code and let AWS handle the heavy lifting.

What is Fargate?

Fargate is a compute engine for containers that allows you to run containers without managing servers or instances. It provides a highly scalable and secure way to deploy containerized applications. With Fargate, you can focus on building and deploying your application, while AWS handles the underlying infrastructure.

What is Application Load Balancer (ALB)?

An Application Load Balancer (ALB) is a load balancer that distributes incoming traffic across multiple targets, such as EC2 instances, containers, and Lambda functions. It provides a highly available and scalable way to handle traffic to your application. With ALB, you can route traffic to multiple targets, ensuring high availability and scalability.

The Benefits of Integrating AWS Lambda to Application Load Balanced Fargate Service

Integrating AWS Lambda to an Application Load Balanced Fargate Service provides several benefits, including:

• Serverless Architecture: With Lambda, you don’t need to worry about provisioning or managing servers. This allows you to focus on writing code and delivering value to your customers.
• High Scalability: Fargate and ALB provide a highly scalable way to handle traffic to your application. You can easily scale your application to handle changes in traffic.
• Cost-Effective: With Lambda and Fargate, you only pay for the compute time and resources you use. This can lead to significant cost savings compared to traditional server-based architectures.
• Improved Security: With ALB, you can configure SSL/TLS certificates and leverage Amazon Web Services’ (AWS) security features to protect your application.

Step 1: Create an AWS Lambda Function

Before you can integrate Lambda to an Application Load Balanced Fargate Service, you need to create a Lambda function. Here’s how:

aws lambda create-function \
--function-name my-lambda-function \
--runtime nodejs14.x \
--role execute-role \
--handler index.handler \
--zip-file file://lambda-function.zip

In this example, we’re creating a Lambda function named “my-lambda-function” with a Node.js 14.x runtime, an execution role, and a handler named “index.handler”. We’re also uploading a ZIP file containing our Lambda function code.

Step 2: Create an Fargate Service

Next, you need to create an Fargate service that will act as the target for your ALB. Here’s how:

aws ecs create-service \
--cluster my-cluster \
--service-name my-fargate-service \
--task-definition my-task-definition \
--desired-count 1 \
--launch-type FARGATE \
--network-configuration "awsvpcConfiguration={subnets=[subnet-12345678],securityGroups=[sg-12345678],assignPublicIp=ENABLED}"

In this example, we’re creating an Fargate service named “my-fargate-service” in a cluster named “my-cluster”. We’re specifying a task definition, a desired count of 1, and a launch type of FARGATE. We’re also configuring the network settings to use a specific subnet and security group.

Step 3: Create an Application Load Balancer (ALB)

Next, you need to create an ALB that will distribute traffic to your Fargate service. Here’s how:

aws elbv2 create-load-balancer \
--name my-alb \
--subnets subnet-12345678 \
--security-groups sg-12345678

In this example, we’re creating an ALB named “my-alb” in a specific subnet and security group.

Step 4: Create a Target Group

Next, you need to create a target group that will register your Fargate service as a target for your ALB. Here’s how:

aws elbv2 create-target-group \
--name my-target-group \
--protocol HTTP \
--port 80 \
--vpc-id vpc-12345678

In this example, we’re creating a target group named “my-target-group” with a protocol of HTTP, a port of 80, and a VPC ID.

Step 5: Register the Fargate Service as a Target

Next, you need to register your Fargate service as a target for your target group. Here’s how:

aws elbv2 register-targets \
--target-group-arn arn:aws:elasticloadbalancing:REGION:ACCOUNT_ID:targetgroup/my-target-group \
--targets "Id=my-task-definition,Port=80"

In this example, we’re registering our Fargate service as a target for the target group, specifying the task definition and port 80.

Step 6: Create an ALB Listener

Next, you need to create an ALB listener that will route traffic to your target group. Here’s how:

aws elbv2 create-listener \
--load-balancer-arn arn:aws:elasticloadbalancing:REGION:ACCOUNT_ID:loadbalancer/my-alb \
--protocol HTTP \
--port 80 \
--default-actions Type=forward,TargetGroupName=my-target-group

In this example, we’re creating an ALB listener that will route traffic to our target group, specifying the protocol, port, and default action.

Step 7: Integrate AWS Lambda to the ALB

Finally, you need to integrate your AWS Lambda function to the ALB. Here’s how:

aws lambda add-permission \
--function-name my-lambda-function \
--statement-id lambda-to-alb \
--action lambda:InvokeFunction \
--principal elasticloadbalancing.amazonaws.com \
--source-arn arn:aws:elasticloadbalancing:REGION:ACCOUNT_ID:loadbalancer/my-alb

In this example, we’re adding a permission to our Lambda function that allows the ALB to invoke the function.

Conclusion

Integrating AWS Lambda to an Application Load Balanced Fargate Service provides a powerful way to build scalable and highly available applications. By following the steps outlined in this article, you can unlock the full potential of serverless computing and focus on delivering value to your customers.

Remember to replace the placeholders with your own values and adjust the commands to fit your specific use case. With AWS Lambda, Fargate, and ALB, you can build a highly scalable and cost-effective architecture that meets the demands of your business.

Keyword	Description
AWS Lambda	A serverless compute service that runs code in response to events.
Fargate	A compute engine for containers that allows running containers without managing servers or instances.
	A load balancer that distributes incoming traffic across multiple targets, such as EC2 instances, containers, and Lambda functions.

By following the steps outlined in this article, you can integrate AWS Lambda to an Application Load Balanced Fargate Service and unlock the full potential of serverless computing. Remember to focus on writing code and delivering value to your customers, while AWS handles the heavy lifting.

Additional Resources

For more information on AWS Lambda, Fargate, and ALB, check out the following resources:

• AWS Lambda Documentation
• AWS Fargate Documentation
• AWS Application Load Balancer Documentation

Happy coding!

Frequently Asked Question

Get ready to turbocharge your application with the power of AWS Lambda and Fargate! Here are the most frequently asked questions about integrating AWS Lambda with Application Load Balanced Fargate Service.