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Opscode Chef for Dummies
- 1. WHO AM I WHO ARE YOU?
- 2. WHO ARE YOU? A Newbie to IT? Developer? Tester? System Administrator? “Business” People?
- 3. DebOps
- 4. Why DebOps? Debit Ops from your Infrastructure to make NoOps Infrastructure.
- 5. Challenges • Complex to Manage • Extra long time required for a change • Risky Rollbacks • Anti Agnostic • High Maintenance
- 6. Why DebOps Adoption ? • Stable/Reliable operating environments • Infrastructure is maintained as code • Infrastructure Versioning • Self Healing Capability • Early detection and faster correction • Less Time to Market • Auditable • Proactive
- 10. • Chef Design
- 11. Chef can also Stand Alone Code Test and Release locally with Chef Solo
- 12. Why Chef ? • Infrastructure as a Code • Self Healing Capability • Idempotent • Lightweight • Resilient Infrastructure • Auditable
- 13. Why Chef? • Infra as a Code • Version Controlled • Idempotent • TMTOWDI • Push Me • Pull Me
- 14. Let’s Hangout with Chef!
- 15. Chef-Client is always with you
- 16. Chef Node Any Server/VM which is managed and controlled by Chef is a Chef Node
- 17. What makes your server a Chef Node? • Chef-Client installed • Bootstrapped(Registered) with Chef Server • Runlist Attached
- 18. Node Attributes • Node specific properties are called as Node Attributes • It can be provided in a form of Array, Hash, or as a single variable. • Attributes can be passed from attribute file, roles, environment, runlist • Attributes works on priority basis.
- 22. Cookbook Contents • Metadata.rb • Recipes • Attributes • Files • Templates • Resources • Providers
- 23. Can you Imagine Chef without Knife ?
- 24. KNIFE C - Create R - Read U - Update D - Delete D - Download S - Search
- 25. Chef Essentials
- 26. Chef Development Kit (DK) • Chef Development Kit • Why DK with Knife? • We need few more tools to build a better Cookbook • CRUDDS… Am I missing anything? • Cookbook Dependency Management • A warning tool, if recipe is not healthy – Foodcritic • Gem bar • Push Jobs
- 27. WYW|WYR
- 28. Attributes • I am used to supply what is required by a cookbook • Yes I have priorities • You can stamp me from cookbook, roles, environments, Runlist
- 29. Template(Configuration as a Code) • Program your Configuration files • I can fetch your attributes from anywhere • I understand your if else for…
- 30. Template
- 31. Files • Use me to dump your as is files • I am used to provide your pre baked resources
- 32. Data Bags • I am a special attribute • Node Independent • Priority Independent • Available for All • I am available as a global/environment variables in your cookbook • I am also capable to hold your secrets(Encrypted Data Bags) • I like to reside at Chef Server so that I could serve every node
- 33. Chef Vault • I am specially developed for managing your secret data. • I am keyless • Only trusted nodes can read me • gem install chef-vault
- 35. Roles • I am a runlist template which can be consumed by all nodes • You can assign me to multiple nodes in same time • Same as runlist, I have recipies and atrributes in me • My attributes get high precedence than node and environment attributes(same type) • Roles can be assigned in Roles too • I am JSON • I miss versioning
- 36. Role view
- 37. Environments
- 38. Environments • Every node is a part of environment • By default every node is registered under _default environment • _default is a environment which cannot be changed • We can create our own environments • A node can be a part of one environment at a time • Environments allow you to assign roles, attributes, restricting cookbook version • I am JSON • I miss versioning
- 39. Environment view
- 41. Test Kitchen • Kitchen supports multiple platforms (i.e.: RHEL, Ubuntu, Windows, etc.) • It supports multiple frameworks (i.e.: Rspec, Serverspec, etc.) • It encourages Test-Driven Development
- 44. Chef Supermarket • 100% free • Chef Supermarket hosts cookbooks which are built by community and available for everyone. • https://supermarket.chef.io/ • Private Supermarket
- 47. Let’s Cook • Build a Cookbook • Test On Kitchen • Roll out in Environment
- 49. For any questions, reach out to me at [email protected]
Editor's Notes
- #14: Manage your infra as a source Code