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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

VIII Conclusions

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About the speaker

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

Serverless principles

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Traditional Deployment

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Zero Downtime deployment

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

AWS Lambda deployment techniques

Two main attributes for safe deployment• versions• aliases

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Lambda deployment with manual traffic shifting

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

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

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

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

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

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

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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Classic Serverless Web Application

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Things to keep in mind

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Deployment Watchouts

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

Classic path-based versioning

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Amazon API Gateway versioning

API Gateway path-based versioning configuring

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AWS SAM Alternatives

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Alternatives

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

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

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• 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

San Francisco, CAT: +1 (650) 286-1198americas@smaato.com

New York City, NYTel: +1 (646) 650-5030americas@smaato.com

Hamburg, GermanyT: +49 (40) 3480 9490emea@smaato.com

Berlin, GermanyT: +49 (40) 3480 9490emea@smaato.com

Singapore, SGT: +65 6336 6815apac@smaato.com

Shanghai, ChinaT: +86 21 6263 0446apac@smaato.com

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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