TechTalk: Reduce Risk with Canary Deployments
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This document discusses canary deployments as a technique for reducing risk when introducing new code to production. It defines canary deployments as deploying new code to a small subset of servers first before fully deploying. Canary deployments allow testing the new code on real users before rolling out widely. CA Release Automation supports defining and executing canary deployments to help reliably deploy new functionality while mitigating risks of failures. The document provides examples of how Netflix and Etsy use canary deployments and demonstrates a typical canary deployment workflow supported by CA Release Automation.
TechTalk: Reduce Risk with Canary Deployments
- 1. TechTalk: Reducing Risk with Canary Deployments Marta Benach DevOps: Continuous Delivery CA Technologies Sr. Engineering Services Architect DO4T32T @TwitterHandle #CAWorld
- 2. 2 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD © 2015 CA. All rights reserved. All trademarks referenced herein belong to their respective companies. The content provided in this CA World 2015 presentation is intended for informational purposes only and does not form any type of warranty. The information provided by a CA partner and/or CA customer has not been reviewed for accuracy by CA. For Informational Purposes Only Terms of this Presentation
- 3. 3 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD 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
- 4. 4 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD Agenda WHAT IS A CANARY DEPLOYMENT DEPLOYMENT TYPES NETFLIX/ETSY CANARY DEPLOYMENT HOW RELEASE AUTOMATION SUPPORTS CANARY DEPLOYMENTS QUESTIONS 1 2 3 4 5
- 5. 5 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD 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 TRANSFORMATION DIGITAL TRANSFORMATION Increase agility Increase qualityIncrease release velocity and cadence CONTINUOUS DELIVERY The Ability to Reliably Release High-Quality Applications at Any Time
- 6. 6 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD 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).
- 7. 7 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD 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
- 8. 8 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD 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
- 9. 9 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD 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
- 10. 10 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD Blue Green Deployments Releasing 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 https://dzone.com/articles/blue-green-deployments-ab-testing-and-canary-relea-2
- 11. 11 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD Canary Deployments 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 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
- 12. 12 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD 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
- 13. 13 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD 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
- 14. 14 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD 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).
- 15. 15 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD Pipeline Report Canary Environment
- 16. 16 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD Pre-Deployment
- 17. 17 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD Deployment
- 18. 18 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD Post Deployment
- 19. 19 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD 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
- 20. 20 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD Recommended Sessions SESSION # TITLE DATE/TIME DO4T06S Vision and Roadmap: Learn How Application Release Solutions Help You Lead the Way 11/18/2015 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
- 21. 21 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD Must See Demos CA Release Automation CA Release Automation Theater 4 CA Continuous Delivery Director Theater 4 CA RA Rapid Dev. Kit, SDK CA Release Automation Theater 4 Integrations CA Release Automation Theater 4
- 22. 22 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD Follow On Conversations At… Smart Bar CA Release Automation Theater 4 Tech Talks CA Release Automation Theater 4
- 23. 23 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD Q & A
- 24. 24 © 2015 CA. ALL RIGHTS RESERVED.@CAWORLD #CAWORLD For More Information To learn more, please visit: http://cainc.to/Nv2VOe CA World ’15