AWS Lambda, Good for the little things Some use...

AWS Lambda, Good for the little things – Some use cases

Carl Simpson

Technical Architect – Zen Internet Limited

V1.0 AWS Lambda, Good for the little things

8/09/2016

Components

The Use Cases

Gotcha’s

Questions(?)

Agenda


8/09/2016

Components


8/09/2016

• You write the code, Lambda runs it

• Node.js / Java / Python

• 100ms of CPU @128MB RAM = $0.000000208

Components - AWS Lambda


8/09/2016

Components – Lambda’s friends


8/09/2016

Use Cases


8/09/2016

Use case 1


8/09/2016

Use Case 1: Take Regular EBS snapshots of important volumes

Important

Important

Reliable:


8/09/2016

Use Case 1: Regular EBS volume snapshots


8/09/2016

Use case 2


8/09/2016

Use Case 2: Development Database

Developers


8/09/2016

Use Case 2: Development Database


8/09/2016

Use case 3


8/09/2016

• Lock down environment access to trusted IP addresses

• Allow AWS Services access for monitoring

• Not to worry about AWS Service IPs changing

• This was provided by AWS on their blog: https://blogs.aws.amazon.com/security (but I did help fix it )

Use Case 3: Auto-updating Security Group

https://blogs.aws.amazon.com/security/post/Tx1LPI2H6Q6S5KC/How-to-Automatically-Update-Your-Security-Groups-for-Amazon-CloudFront-and-AWS-W


8/09/2016

Use Case 3: Auto-updating Security Group


8/09/2016

Use case 4


8/09/2016

• Maintain customised, patched (Windows) AMIs

• Share AMIs with customer accounts

• Low operational overhead

Use Case 4: Custom AMI builds (Windows)


8/09/2016

Use Case 4: Automated Custom Windows AMI builds


8/09/2016

Gotcha’s


8/09/2016

CloudFormation – Inconsistent Lambda triggers

S3 Team

AWS::S3::Bucket

(“NotificationConfiguration”)

SNS Team

AWS::Lambda::Permission

CloudWatch Team

AWS::Events::Rule


8/09/2016

SNS – AWS Managed Notifications


8/09/2016

SNS Topics I’ve come across:

– arn:aws:sns:us-east-1:806199016981:AmazonIpSpaceChanged

– arn:aws:sns:us-east-1:801119661308:ec2-windows-ami-update

– arn:aws:sns:us-east-1:801119661308:ec2-windows-ami-private

– arn:aws:sns:us-east-1:801119661308:ec2-windows-ec2config



8/09/2016



8/09/2016

• Lambda’s also good for little things too!

• Give it a go

• Ask me about it later

Summary


8/09/2016

Questions?

AWS Lambda, Good for the little things Some use...

Documents

Transcript of AWS Lambda, Good for the little things Some use...