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DevOpsDays Ignite - Immutable infrastructure - Amsterdam 24-5-2015
The document discusses the concept of immutable infrastructure as a modern approach to managing systems, emphasizing the transition from traditional physical servers to automated, repeatable processes. It highlights various deployment strategies like blue/green and canary deployments, and mentions the challenges of data storage along with the importance of logging and monitoring. Ultimately, it promotes a fully automated continuous delivery framework that embraces change.
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DevOpsDays Ignite - Immutable infrastructure - Amsterdam 24-5-2015
- 1. Immutable infrastructure Pavel Chunyayev DevOpsDaysAmsterdam 25-05-2015
- 2. Modern approach tomanage infrastructure
- 3. Good old worldof physical servers Those were the days
- 4. Apply the goldenimage And pray
- 5. Configuration mgmt tosave us all Or at least to try
- 6. Deployments that everyonehates Or is it just me?
- 7. But we wantmore deployments! MOAR!
- 8. Get yourself aprocess Repeat, repeat, repeat
- 9. Never change yourserver again! Nothing personal
- 10. Sysadmins become developers Andnot using Perl this time
- 11. Real infrastructure asa code Shit just got real
- 12.
- 13.
- 14. Immutable nature ofcontainters
- 15. Where to storedata? Somewhere else
- 16. But what aboutlogs and metrics? #monitoringsucks
- 17. Continuous Delivery atits best Fully automated and repeatable
- 18. Prefabricated, prebuilt, prebaked, phoenix,disposable, immutable Just choose any already
- 19. Immutable infrastructure The mostambiguous name
- 20.
Editor's Notes
- #3 New cloud world requires new ideas DevOps, Continuous Delivery, Automation Especially valuable for microservices
- #4 All historic experience Servers number - small Situation - manageable As the number grows, the task gets harder Compliance Updates
- #5 And the concept of golden image appeared Provision from approved state Issues: Waiting for sysadmin to create and configure infra How to deal with already provisioned instances Managing live instances is the same as previously
- #6 Infrastructure as a code Issues: Still infrastructure is re-used DSL (sometimes hard to learn) Compliant only in areas covered by code
- #7 Deploying to stateful server is hard Edge-cases Serial deployment: handle exceptions manually Still not fun
- #8 Need to deploy more frequently => repetition Easier when rebuilt from the scratch Repetition leads to mastery Fire drills are part of everyday life now! You infra is self-healing
- #9 Continuous Delivery Lean Software Development Know exact MTTR Reduce Inconsistencies variability waste
- #10 Never change – recreate! Server state is not saved Not like in functional programming language
- #11 Sysadmins are developers now Code everything!
- #12 API is the key You can program infrastructure life cycle Create Configure Deploy Operate Dispose Deployments suddenly get a lot easier
- #13 Create duplicate infrastructure Test everything Make the switch Can be done with reusable infrastructure too Slower
- #14 Deploy new version alongside Gradually increase amount of traffic Monitor constantly If anything’s wrong – quickly revert When reach 100% - dispose older version
- #15 Immutable Copy-on-write allows to easily revert to known-state Pass containers around and start without any data Dockerfile is essentially a bash file Is applied only once
- #16 Somewhere else persistency layer/database Stateless application
- #17 Send to remote host Push instead of pull
- #18 Continuous Delivery at its best Continuous Deployments Fully automated and repeatable Package application only once – and then never change it Quick feedback if anything fails Testing in production!
- #20 New paradigm for the cloud era and microservices architecture.
- #21 Make your life easier if you are operations – think as a developer If you are a developer - take responsibility for environment where your application is running. It’s a lot easier than before If you are a manager – embrace the future: Disposable infrastructure on-demand exactly when it’s needed.