TechTalk: Reduce Risk with Canary Deployments

TechTalk: Reducing Risk with Canary Deployments

Marta Benach

DevOps: Continuous Delivery

CA Technologies

Sr. Engineering Services Architect

DO4T32T

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Abstract

During this session, we’ll discuss concepts like Canary, Blue/Green and A/B deployments. We will show you just how easy it is to use CA Release Automation to automate these advanced techniques to reduce your overall risk and ensure that the applications you are deploying will perform as expected.

Marta

Benach

CA Technologies

Principal Engineering Services Architect


Agenda

WHAT IS A CANARY DEPLOYMENT

DEPLOYMENT TYPES

NETFLIX/ETSY CANARY DEPLOYMENT

HOW RELEASE AUTOMATION SUPPORTS CANARY DEPLOYMENTS

QUESTIONS

1

2

3

4

5


Every company is becoming a technology company,every business a digital business.

Re-think how the business operates to find

new ways to create and deliver customer value. DIGITAL

TRANSFORMATIONDIGITAL

TRANSFORMATION

Increase agility Increase qualityIncrease release velocity and cadence

CONTINUOUS DELIVERY

The Ability to Reliably Release High-Quality Applications at Any Time


What is a canary deployment?

The basic idea of a canary deployment is to deploy new code to a small subset of your production infrastructure to see how the new code (the canary) compares to the old code (the baseline).


How do canary deployments help us?

Reducing risk/increases confidence in the release

Contain failure/faster recovery due to failure

Faster time to end user

Key technique of Continuous Delivery


Deployment and Testing Techniques

A/B

Testing performance and usability,generally front-end testing

Blue/Green

Two identical product systems in which one is live and the other is standby

Canary

Rolling out code to a small subset of servers/users at a time, sometimes referred to as a phased or incremental rollout


A/B Testing

A randomized experiment with variations in the application.

A subset of users is exposed to each version.

Metrics are collected and used to determine effectiveness (performance, usability). Christian Posta, “Dzone, Blue-green Deployments, A/B Testing and Canary Releases,”

https://dzone.com/articles/blue-green-deployments-ab-testing-and-canary-relea-2

50% visitors see variation A

50% visitors see variation B

variation A

variation B

23%conversion

11%conversion


Blue Green DeploymentsReleasing Applications in a consistent manner with limited down time

Two identical production systems, Blue and Green

Either Blue or Green is live at any given time

New code is pushed to the standby system(Green) and tested

New users are directed to Green, active Blue users are gradually directed to Green when active sessions timeout

Blue then becomes standby system

Reverse proxy

App1 App3

DB

App2

App1 App3

DB

App2

Reverse proxy

App1 App3

DB

App2

App1 App3

DB

App2

Christian Posta —Dzone —Blue-green Deployments, A/B Testing and Canary Releases




Canary Deployments

Christian Posta —Dzone —Blue-green Deployments, A/B Testing and Canary Releases


Canary in the coalmine—warns of danger.

A small subset of servers are taken off the load balancer.

The latest build is deployed to the subset and tested.

After successful testing, code is fully deployed.

LOADBALANCER

v1 v1 v1

v1 v1



A Few Examples

Online video streaming service

Continuous delivery model

Deploy after every commit

Canary deployments

– Test.

– Gather metrics.

– Analyze.

– Release to full production.

A premier destination for handmade goods, vintage items and craft supplies.

Continuous delivery model

Configuration as code/database schema changes

Canary Deployments

– Test.

– Gather Metrics.

– Analyze.

– Release.

ETSYNETFLIX


Canary Deployments with Release Automation

Ability to deploy code to limited number of servers during deployment

Dynamically add/remove servers to canary group

Ability to execute canary deployments in all environments not just prod

Rollback for failures

Run staggered and scheduled deployments

Clear visualization of the deployment status

Consistent delivery of the artifacts


A Typical Canary Deployment Scenario with CA Release Automation

Stage artifacts for deployments, including: build artifacts, test scripts,

config files and deployment manifests.

Remove canary servers from load balancing.

Upgrade canary application.

Proceed with automated testing

of application

Restore Canary servers to load balancing (connectivity and

sanity checks).

Upgrade the rest of the servers if the Canary

testing with live usage is successful (otherwise

rollback).


Pipeline ReportCanary Environment


Pre-Deployment


Deployment


Post Deployment


Canary Deployments with CA Release Automation

• A deployment technique helps to reduce risk while introducing new content to production.

• Easily define and execute canary deployments with CA Release Automation.

• Consistently and reliably deploy new functionality to production environments.

• Fail faster and mitigate risk.

Notice: No canaries were harmed during the creation of this presentation.

Summary


Recommended Sessions

SESSION # TITLE DATE/TIME

DO4T06SVision and Roadmap: Learn How Application Release

Solutions Help You Lead the Way11/18/2015 at 2:00 pm

DO4X213L

Hands-On Lab: Complement CA Release Automation with

a New Continuous Delivery Solution Offering A Visual

Approach for Complex Application Releases

11/18/2015 at 4:30 pm

DO4X210L

Hands-On Lab: Build Integrations You Need with CA

Release Automation Rapid Development Kit (RDK) and

Software Development Kit (SDK)

11/19/2015 at 3:00 pm


Must See Demos

CA Release Automation


Theater 4

CA Continuous Delivery DirectorTheater 4

CA RA Rapid Dev. Kit, SDKCA Release Automation

Theater 4

Integrations


Theater 4


Follow On Conversations At…

Smart Bar


Theater 4

Tech Talks


Theater 4


Q & A


For More Information

To learn more, please visit:

http://cainc.to/Nv2VOe

CA World ’15

http://cainc.to/Nv2VOe

http://bit.ly/1wbjjqX

TechTalk: Reduce Risk with Canary Deployments

Technology

Transcript of TechTalk: Reduce Risk with Canary Deployments