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


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Components


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• You write the code, Lambda runs it

• Node.js / Java / Python

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

Components - AWS Lambda


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Components – Lambda’s friends


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Use Cases


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Use case 1


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Use Case 1: Take Regular EBS snapshots of important volumes

Important

Important

Reliable:


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Use Case 1: Regular EBS volume snapshots


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Use case 2


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Use Case 2: Development Database

Developers


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Use Case 2: Development Database


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Use case 3


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• 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


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Use Case 3: Auto-updating Security Group


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Use case 4


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• Maintain customised, patched (Windows) AMIs

• Share AMIs with customer accounts

• Low operational overhead

Use Case 4: Custom AMI builds (Windows)


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Use Case 4: Automated Custom Windows AMI builds


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Gotcha’s


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CloudFormation – Inconsistent Lambda triggers

S3 Team

AWS::S3::Bucket

(“NotificationConfiguration”)

SNS Team

AWS::Lambda::Permission

CloudWatch Team

AWS::Events::Rule


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SNS – AWS Managed Notifications


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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



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• Lambda’s also good for little things too!

• Give it a go

• Ask me about it later

Summary


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Questions?

aws lambda, good for the little things some use...

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