DevOps demystified

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The new buzz world in the world of Agile is "DevOps". So what exactly is devOps and Why do we need it? When development got married to deployment (sys-admin/operations) ; what is born is a new advanced species which is known to us today as "DevOps"

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DevOps demystified

  1. 1. DevOps Demystified Anirudh Bhatnagar Senior Consultant, Xebia India. abhatnagar@xebia.com 9650573087
  2. 2. SOFTWARE DEVELOPMENT DONE RIGHT Netherlands | USA | India | France | UK www.xebia.in; Blog :http://.xebee.xebia.in
  3. 3. Amazon’s web infrastructure guru James Hamilton uses Facebook’s recently released energy data to make an educated guess for how many servers Facebook now has: potentially 180,000. That’s up from an estimated 30,000 in the winter of 2009, and 60,000 by the Summer of 2010. google has more than one million servers •  •  •  •  3 engineers over 14 million users no hardware +100 instances on Amazon EC2 10 releases per day!
  4. 4. Agile : Responding to change.. - Less time to Market. - Low release cycle time. - Huge amount of servers on cloud. - Zero downtime. - Increasing traffic and user base.
  5. 5. From Idea to Product
  6. 6. The initial step: From Waterfall to Agile! - Continuous Integration - Test Automation
  7. 7. But what about Release? The Last Mile !
  8. 8. The next step : From CI to Continuous Delivery
  9. 9. Impediments
  10. 10. The Division Wall!
  11. 11. The Dev world Write Code Write Unit Test Cases
  12. 12. The Ops World IT buying Installation of server hardware and OS Configuration of servers, networks, storage, etc… Monitoring of servers Respond to outages IT security Managing phone systems, network Change control Backup and disaster recovery planning Manage active directory Asset tracking Software deployments Application support
  13. 13. Developer vs IT Operations
  14. 14. Bridging the gap!
  15. 15. Introducing Mr. DevOps Mr. Sacha Noam Baron Cohen Designation : Senior DevOps Engineer
  16. 16. its a culture... its a movement.. Started as devOps days in Belgium in 2009. Developers interested in cloud, clusters, servers, deployments, databases learn to write code to maintain them. Ops people evolve and start developing the code to maintain infrastructure. And they are all in one same dev team trying to achieve one goal!
  17. 17. Collaboration -> Best practices Ops learn from developers - > Coding principles, managed code, versioning. Dev learn from Ops -> Insights of environment and deployments, their problems.
  18. 18. Continuous delivery cont... Deployment Pipelines
  19. 19. example: Build pipelines using Jenkins
  20. 20. Automated Acceptance Gates
  21. 21. Next Hurdle : Configuration Management Lets Automate : We had Perl... We had shell scripts.. •  How soon can you write this script? •  How maintainable is it? •  Can you write test cases for it? •  Can you have versioning? •  Can you have reusability? •  Risk???? •  Idempotency
  22. 22. Phoenix Test
  23. 23. Infrastructure as code Evolving from Scripts to code "a flexible model for reuse by enabling users to model infrastructure as code to easily and consistently configure and deploy infrastructure across any platform. Create a blueprint of your infrastructure that enables you to build or rebuild, automatically in minutes or hours – not weeks or months."
  24. 24. Tools of the game Chef Puppet! vFabric .... ...
  25. 25. What is Chef? Chef is a configuration management tool. Using its cookbooks and recipes we can provisions VMs, environments. Community maintained code, almost everything is prebuilt (cookbooks and recipes), need not reinvent the wheel, just modify as per the need.
  26. 26. Chef Server, Chef node ,Knife, Cookbook and Recipes Chef Server : Central hub which keeps the nodes in sync. A cookbook is the fundamental unit of configuration and policy distribution in Chef. Recipes reside inside a Cookbook. Written in Ruby. Configurations , Policies and Attributes. Example CookBook of MySQL will contain 2 recipes 1. For MySql Server 2. For MySql Client Sample : http://community.opscode.com/cookbooks/mysql https://github.com/opscode-cookbooks/mysql Using your workstation you write/modify cookbooks and using knife (a tool) you sync it with chef repo and chef server.
  27. 27. Chef Overview
  28. 28. Deployit
  29. 29. The complete picture..
  30. 30. Small Demo: Using Vagrant Provision a VM and put Redis (a key-value based noSql Database) on an Ubuntu machine. .1) Provision VM 2.)Install Ubuntu 3.)Get the machine Up 4.)Download installer for Redis 5.)Install redis 6.)Start the service
  31. 31. Cloud Support : EC2 $ knife ec2 server create "role[Demo] -N "demo.example.net" -i ami -3e02f257
  32. 32. Thanks!
  33. 33. Continuous Integration and Delivery Consulting Products Cloud, EC2, Cloud foundation - Deployit Monitoring/logging/ integration Networks, End to end automation vagrant, virtual-box ,lxc,docker, vm - XL Release ü  Automated Build ü  Automated Deployments ü  Automated provisioning of infrastructure ü  Automated Tests Build automation -Jenkins/ Hudson, Linux packaging Infra as Code –chef / puppet Virtualization, SSH, Shell scripting
  34. 34. Contact us @ Websites www.xebia.in www.xebia.com www.xebia.fr Xebia India infoindia@xebia.com Thought Leadership Htto://xebee.xebia.in http://blog.xebia.com http://podcast.xebia.com

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