Infrastructure Automation with Chef

Sep 28, 2016Download as PPTX, PDF2 likes2,010 views

Uchit Vyas gave a presentation on infrastructure automation using Chef at the DevOps Summit in Pune. Chef is an open-source tool that allows users to define infrastructure as code and automate the deployment and configuration of servers. It uses Ruby scripts and a library of reusable components called cookbooks to manage and deploy server configurations. During a Chef client run, it registers nodes, synchronizes cookbooks, compiles resources, and configures nodes to match the defined infrastructure code.

www.reancloud.com
September 23, 2016
Cloud Participates at
DevOps Summit, Pune
Speaker: Uchit Vyas

2
Infrastructure Automation
with Chef
By: Uchit Vyas
(Cloud Architect)

3
Uchit’s Introduction
• Working @ REAN Cloud, India
• Infrastructure Automation Domain
• Authored 4 books on Cloud with the following titles &
counting:

4
Code Infrastructure
Infrastructure Code
Infrastructure AS Code

5
Building and Managing
Infrastructure
Programmatically

6
At High Level
 A Custom Library
 A Configuration Management Platform
 A System Integration Platform
 Fine-grained API for Infrastructure
 Fine-grained API and Auditing

7
Chef Principles
 It’s a Language
 Idempotency
 Managed State of Infrastructure
 Reasonability

8
Chef with Automation
Infrastructure
DeploymentProvisioning

9
Infrastructure-as-Code: Chef
 Configuration of your Servers
 Versioning Capability
 Managed Source-code
 Managed CM as Idempotent Resources

11
Managing Complexity
 Organizations
 Environments
 Roles
 Nodes
 Recipes
 Cookbooks
 Search

12
Chef: Develop, Test and Deploy
Image source: https://docs.chef.io/chef_overview.html

13
Chef-client Run
While initiating chef-client execution, it executes all steps to bring the
node into the expected end state, including:
 Registering/Re-registering and authenticating the node with the Chef server
 Building the node object
 Synchronizing cookbooks from chef-server by validating associated roles
and cookbooks for given node
 Compiling associated resources by loading each of the required cookbooks,
including recipes, attributes, libraries and all other dependencies
 Performing the appropriate and required actions to configure bring the node
into expected state
 Looking for exceptions (if any) and notifications, handling each as required
by the logic

14
Chef-Client Run
Image source: https://docs.chef.io/chef_overview.html

15
It’s All Ruby
http://wiki.opscode.com/display/chef/Just+Enough+Ruby+for+Chef
“Just Enough Ruby for Chef”

16
Start a thread with us now!
To learn more about the DevOps Summit, you can visit:
http://www.unicomlearning.com/2016/Devops_Summit_Pune/
Or check out the Event Facebook page: www.facebook.com/joinunicom
For any DevOps related questions, please drop us a line at:
info@reancloud.com

THANK YOU
connect with us at indiasales@reancloud.com

This document discusses Opscode Chef, a systems integration framework that allows users to manage infrastructure as code. It provides concise summaries of key points about Chef: 1) Chef allows users to manage server configuration and infrastructure as code using resources, recipes, roles and other concepts defined in the Chef framework. 2) Infrastructure is defined as code that can be versioned, tested, and deployed to automatically configure servers. 3) The document discusses Chef concepts like nodes, environments, attributes and provides an example of using a cron resource to configure a scheduled task.

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Tests, especially unit tests, are the developers’ superheroes. They allow us to mess around with our code and keep us safe. We often trust them with the safety of our codebase, but how do we know that we should? How do we know that this trust is well-deserved? Enter mutation testing – by intentionally injecting harmful mutations into our code and seeing if they are caught by the tests, we can evaluate the quality of the safety net they provide. By watching the watchmen, we can make sure our tests really protect us, and we aren’t just green-washing our IDEs to a false sense of security. Talk from SciFiDevCon 2025 https://www.scifidevcon.com/courses/2025-scifidevcon/contents/680efa43ae4f5

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This presentation explores code comprehension challenges in scientific programming based on a survey of 57 research scientists. It reveals that 57.9% of scientists have no formal training in writing readable code. Key findings highlight a "documentation paradox" where documentation is both the most common readability practice and the biggest challenge scientists face. The study identifies critical issues with naming conventions and code organization, noting that 100% of scientists agree readable code is essential for reproducible research. The research concludes with four key recommendations: expanding programming education for scientists, conducting targeted research on scientific code quality, developing specialized tools, and establishing clearer documentation guidelines for scientific software. Presented at: The 33rd International Conference on Program Comprehension (ICPC '25) Date of Conference: April 2025 Conference Location: Ottawa, Ontario, Canada Preprint: https://arxiv.org/abs/2501.10037

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How Valletta helped healthcare SaaS to transform QA and compliance to grow wi...Egor Kaleynik

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