resources Continuous deployment of Serverless · AWS Serverless Application Model 18 Single-deployment configuration Extension of AWS CloudFormation ... Traffic routing with Step

Continuous deployment of Serverless resourcesSergii Pavlenko | 09 Sep 2019Smaato Inc.

Community Day 2019 Sponsors

Continuous deployment of Serverless resources

Sergii Pavlenko, Smaato Inc.Sep 9, 2019

Agenda

I What is Serverless?

II Traditional vs Lambda Deployment

III AWS SAM

IV AWS SAM Deployment Types

V Demo

VI Things To Keep In Mind

VII AWS SAM Alternatives

Copyright © 2019 Smaato, Inc. All Rights Reserved. 3

VIII Conclusions

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Copyright © 2019 Smaato, Inc. All Rights Reserved.

About the speaker

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Sergii PavlenkoSenior Software Engineer15 years in ITServerless Advocate

Smaato Inc.Smaato is the leading global mobile RTB ad

exchange (SMX) helping mobile app developers and publishers increase ad revenues worldwide.

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Serverless

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What is Serverless

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Serverless principles

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Traditional Deployment

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Zero Downtime deployment

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Zero downtime deployment overview

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Blue Green Deployment

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Route 53Update DNS routes

Load BalancerSwap Auto Scaling

Groups

Launch Configuration

Auto Scaling GroupUpdate Launch Configuration

Elastic BeanstalkSwap URLs

OpsWorksCloning Stacks

CloudformationUpdate Policies

Zero downtime deployment strategies in AWS resources

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AWS Lambda Deployment

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Lambda deployment

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AWS Lambda deployment techniques

Two main attributes for safe deployment• versions• aliases

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Lambda deployment with manual traffic shifting

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Using Aliases to manage Lambda function versions

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Using Aliases to manage Lambda function versions

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Manual traffic shifting using CLI

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AWS SAM

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AWS Serverless Application Model

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AWS SAM is a model used to define serverless applications on AWS

AWS SAM template specification

AWS SAM command line interface (AWS SAM CLI)

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AWS Serverless Application Model

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Single-deployment configuration

Extension of AWS CloudFormation

Built-in best practices

Local debugging and testing

Deep integration with development tools

AWS SAM benefits

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SAM Cloudformation Extension

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SAM templateAWSTemplateFormatVersion: 2010-09-09Transform: AWS::Serverless-2016-10-31Resources: MyFunction: Type: AWS::Serverless::Function Properties: CodeUri: / Handler: worker_function.lambda_handler Runtime: python3.7 AutoPublishAlias: live DeploymentPreference: Type: Canary10Percent5Minutes Alarms: - !Ref ErrorMetricGreaterThanZeroAlarm Hooks: PreTraffic: !Ref PreTrafficLambdaFunction PostTraffic: !Ref PostTrafficLambdaFunction Policies: - AmazonS3ReadOnlyAccess Events: GetResource: Type: Api Properties: Path: /get Method: GET

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SAM Deployment Preference

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SAM templateAWSTemplateFormatVersion: 2010-09-09Transform: AWS::Serverless-2016-10-31Resources: MyFunction: Type: AWS::Serverless::Function Properties: CodeUri: / Handler: worker_function.lambda_handler Runtime: python3.7 AutoPublishAlias: live DeploymentPreference: Type: Canary10Percent5Minutes Alarms: - !Ref ErrorMetricGreaterThanZeroAlarm Hooks: PreTraffic: !Ref PreTrafficLambdaFunction PostTraffic: !Ref PostTrafficLambdaFunction Policies: - AmazonS3ReadOnlyAccess Events: GetResource: Type: Api Properties: Path: /get Method: GET

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Traffic routing with Step Functions

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StartAt: PreTrafficStates: PreTraffic: Type: Task Resource: !Sub "${PreTrafficLambdaFunction.Arn}" Next: IncreaseTrafficShifting IncreaseTrafficShifting: Type: Task Resource: !Sub "${IncreaseTrafficShiftingFunction.Arn}" Next: Wait Wait: Type: Wait Seconds: 600 Next: CheckFailures CheckFailures: Type: Choice Choices: - Variable: "$.failures" NumericEquals: 0 Next: IncreaseTrafficShifting - Variable: "$.percentage" NumericEquals: 100 Next: PostTraffic Default: Fail PostTraffic: Type: Task Resource: !Sub "${PostTrafficLambdaFunction.Arn}"

State Machine in nutshell

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Automated Lambda deployment with AWS SAM

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AWS SAM Deployment Types

Canary

Linear

All-at-once

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Canary deployment

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Linear deployment

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DEMO

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Demo

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Classic Serverless Web Application

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Things to keep in mind

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Deployment Watchouts

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Route users instead of requests

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New version - new container

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False positive rollbacksFalse negative validations

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Complex invocations

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Amazon API Gateway versioning

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Classic path-based versioning

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Amazon API Gateway versioning

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API Gateway path-based versioning configuring

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AWS SAM Alternatives

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Alternatives

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Serverless

plugins: - serverless-plugin-aws-alerts - serverless-plugin-canary-deployments

functions: worker-function: deploymentSettings: type: Canary10Percent5Minutes alias: live preTrafficHook: preHook postTrafficHook: postHook alarms: - funcAlarm

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Alternatives

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Terraform

resource "aws_codedeploy_deployment_config" "config" { compute_platform = "Lambda"

traffic_routing_config { type = "TimeBasedCanary"

time_based_canary { interval = 10 percentage = 5 } }}

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Conclusions

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Conclusions• zero downtime deployment is better than scheduled

deployment• use versions and aliases for instant update/rollback• weighted aliases re-routing is working out of the box• automated shifting traffic is enough for the most cases• need to be careful in particular cases

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Links

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Links• What Is the AWS Serverless Application Model (AWS SAM)?• AWS Serverless Application Model (AWS SAM)• AWS SAM CLI• What Is CodeDeploy?• Traffic Shifting Using Aliases• Gradual Code Deployment• quickstart-codepipeline-bluegreen-deployment• Blue/Green Deployments on AWS

https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/what-is-sam.html

https://github.com/awslabs/serverless-application-model

https://github.com/awslabs/aws-sam-cli

https://docs.aws.amazon.com/codedeploy/latest/userguide/welcome.html

https://docs.aws.amazon.com/lambda/latest/dg/lambda-traffic-shifting-using-aliases.html

https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/automating-updates-to-serverless-apps.html

https://github.com/aws-quickstart/quickstart-codepipeline-bluegreen-deployment

https://d0.awsstatic.com/whitepapers/AWS_Blue_Green_Deployments.pdf

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Thank You.ABOUT SMAATOSmaato, the global in-app advertising platform, drives the technology that keeps apps free. Smaato’s full-featured mobile ad server empowers apps of all sizes to reach their full monetization potential by connecting them with the world’s top advertisers. The Smaato SDK provides publishers with seamless integration and maximum control of their inventory. Founded in 2005, Smaato is headquartered in San Francisco, California, with additional offices in Berlin, Hamburg, New York, Shanghai, and Singapore. Learn more at www.smaato.com.

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resources Continuous deployment of Serverless · AWS Serverless Application Model 18 Single-deployment configuration Extension of AWS CloudFormation ... Traffic routing with Step