QA to sous-Chef
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This is my experience as a black box test engineer venturing into Devops using Chef. I cover the following topics during the course of my presentation - Why Chef, Pre-requisites, Cooking on a vagrant VM and conclude with an introduction to Berkshelf.
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QA to sous-Chef
- 1. QA to sous-Chef Sajnikanth Suriyanarayanan Presented at Devops Summit on 27th March 2014 & at DevopsSG on 2nd October 2013
- 2. About Me ● Coastal GeoScientist and Civil Engineer ● 10+ years in Software Quality Assurance and Functional Testing ● HP Certified Professional in Quality Center ● Lead Quality Assurance at Vistaprint ● http://sajnikanth.com
- 3. ● I’m a beginner ● May not be the standard way ● introduction to vagrant ● introduction to chef provisioning ● introduction to berkshelf Disclaimer & Take-Away
- 4. Contents ● Background ● Problem ● Vagrant + bash ● Vagrant + Chef ● Demo ● Lessons Learned
- 5. Background As Test Engineer, I usually: ● write test scripts ● merge pull requests ● deploy code ● test changes
- 6. Problem Current project is brand new. So: ● write test scripts ● merge pull requests ● deploy code (where to?) ● test changes
- 7. ● App lives locally ● Experiment with technologies (mysql or mongoDB; apache or nginx;) ● Unstable environment Problem ... A server should be like a phoenix, regularly rising from the ashes - Martin Fowler
- 8. Vagrant + bash ● Reproducible ● Portable ● Isolated; room for experimentation ● Use Bash to install apps 'automatically'
- 9. Vagrant + bash ... Changing / maintaining bash scripts?
- 10. Vagrant + Chef Apprehensions: ● Ruby ● Steep learning curve ○ hosted chef or chef solo ○ knife ○ opscode ○ cookbooks ○ recipe ○ omnibus ○ information overload!!
- 11. Forget it! Let’s get our hands dirty
- 12. Install nginx on vagrant VM using Chef Pre-Requisites ● VirtualBox ● vagrant installed ● vagrant omnibus ● vagrant guest additions ● knife Demo
- 13. vagrant init Demo - Initialize vagrant
- 14. Demo - Create Cookbooks mkdir ./cookbooks knife cookbook site download nginx Unarchive and delete tar
- 15. Demo - Update Vagrantfile
- 16. Demo - Let’s cook vagrant up
- 17. Demo - Results?
- 18. Demo - Download apt cookbook knife cookbook site download apt
- 19. Demo - Update Vagrantfile
- 20. Demo - We try again vagrant up Cookbook bluepill not found Cookbook rsyslog not found Cookbook build-essential not found Cookbook ohai not found Cookbook runit not found Cookbook yum not found Cookbook yum-epel not found
- 22. Demo - Update Vagrantfile
- 23. Hungry Already?
- 24. Demo - and again vagrant up
- 25. Easy way to manage cookbooks gem install berkshelf vagrant plugin install vagrant-berkshelf Demo - enter Berkshelf
- 26. cookbook 'nginx' Demo - Berksfile
- 27. berks install Demo - using berkshelf ~/.berkshelf/cookbooks/
- 28. Demo - update Vagrantfile update Vagrantfile to use berkshelf vagrant reload
- 29. Demo - Results
- 30. Demo - Resources ● Presentation link - http://j.mp/devops-summit ● Demo repo - https://github.com/sajnikanth/chef-berkshelf-demo ● Chef Tutorials ○ http://nathenharvey.com/blog/2012/12/06/learning-chef-part-1/ ○ https://learnchef.opscode.com/quickstart/ ● Berkshelf Introduction - http://youtu.be/hYt0E84kYUI
- 31. 3 Important lessons learned while using chef ● RTFM ● RTFM ● RTFM Lessons Learned Questions?