Top 25 Chef Interview Questions and Answers

It should run periodically to ensure that the server is always up to date (usually with a cron job or by setting up the chef-client to run as a service). Nodes are validated through the validator.pem and client.pem certificates created on the node when it is bootstrapped. All nodes must be bootstrapped over SSH as either the root user or a user with elevated privileges. The Chef workstation can be installed on virtual servers or personal computers. A Chef workstation will interact with a single Chef server, and most work is done in the chef-repo directory located on the workstation. How do you take the continuous delivery, DevOps concepts and scale them across a much larger organization?

  • Chef’s focus is to apply software development best practices to IT operations and, therefore, it highlights testing discipline as a differentiating factor between competitors.
  • It is an automation tool which provides a way used to define infrastructure as code, and that Infrastructure as code means managing infrastructure through writing code instead of using manual processes.
  • This workstation makes the interaction with Chef-server possible and also with the Chef-nodes.

Also, Test kitchen helps in addressing cookbook dependencies and application of cookbooks to instances. Nodes refer to the machines that are managed or configured by the Chef Server, which may be virtual servers, network devices, or any other storage devices. This problem could have been sorted chef certification devops if the environments of different systems would have been in sync. If all this process would have been automated, then fixing these systems would have been a piece of cake. It was easier to handle peaky traffic because of cloud’s compute-on-demand model, and handoffs were minimized.


This is the key to automating the development and deployment process. On a node, chef-client checks the node’s current configuration against the recipes and policies stored on the Chef server and brings the node up to date. The process begins with the chef-client checking the node’s run list, loading the required cookbooks, then checking and syncing the cookbooks with the current configuration of the node.

what is chef in devops

Files can be configuration and set-up files, scripts, website files, and more. You can use a cookbook_file resource block within a recipe to create the file on a node. All static files should be stored in a cookbook’s “files” directory. Recipes are written in Ruby and contain information about everything needing to be run, changed, or created on a node.

What is Automating Infrastructure – Chef for DevOps about?

Chef server contains all configuration data and it stores cookbooks, recipes, and metadata that describe each node in the Chef-Client. Any changes made must pass through the Chef server to be deployed. Chef is a Configuration management DevOps tool that manages the infrastructure by writing code rather than using a manual process so that it can be automated, tested and deployed very easily. Chef has Client-server architecture and it supports multiple platforms like Windows, Ubuntu, Centos, and Solaris etc. It can also be integrated with cloud platform like AWS, Google Cloud Platform, and Open Stack etc. Before getting into Chef deeply let us understand Configuration Management.

As a result of the increasing adoption and popularity of Chef among DevOps professionals, you can find many online searches for chef interview questions. A chef is an open-source configuration management tool that uses Ruby to develop essential building blocks like recipes and cookbooks. This feature enables Chef to manage and configure multiple systems with ease. Chef is an open-source configuration management tool that enables you to configure and manage multiple systems with ease.