Prime 21 Chef Interview Questions and Solutions for DevOps Engineers

1. What’s Chef?
Reply:
Chef is a robust configuration administration instrument and automation instrument.
It converts the infrastructure of the corporate right into a structured format
of code. Due to Chef you’ll be able to develop scripts that can be utilized for
automating the IT and enterprise processes.

2. What’s the DevOps Life Cycle?
Reply:
DevOps Life Cycle is made up of phases similar to Steady Growth,
Integration, Testing, Deployment, and Monitoring. We clarify the phases
beneath.

3. What’s the significance of Chef Inspec in compliance with automation?
Reply:
Chef Inspec gives safety and compliance guidelines throughout safety
engineers, operations, and software program builders. It enforces constant
requirements within the managed setting and in every stage of growth by
working automated assessments for compliance, safety, and different coverage
necessities throughout servers, containers, and cloud APIs.

4. How is Chef Automate utilized?
Reply:
Chef Automate presents an analytics dashboard for builders, operations,
and safety personnel in a single place, delivering modifications in
infrastructure and purposes. It additionally presents actionable insights on
efficiency and scaling throughout a number of information facilities and cloud
suppliers.

5. What are the merchandise supplied by Chef for DevOps operations?
Reply: Merchandise supplied embody:

• Chef Desktop
• Chef Compliance
• Chef Infra
• Chef Habitat
• Chef Inspec
• Chef Automate

6. What’s the position of OHAI in Chef?
Reply:
OHAI is a instrument that Chef Infra runs and collects system configuration
information used inside Cookbooks. It detects widespread configuration particulars with
assist of built-in plug-in. It additionally collects attributes from Working
System, Community, Reminiscence, Disk, CPU, Kernel, Hostnames, and Cloud
supplier metadata.

7. What are the forms of handlers in Chef?
Reply: the three handlers in Chef are as follows:

• Exception Handler
• Begin Handler
• Report Handler

8. What’s Check Kitchen?
Reply:
Check kitchen is a built-in instrument that assessments the recipe – (code to
configure an infrastructure), in an remoted setting, for any
potential defects, which will change the manufacturing setting. It permits
testing code to configure infrastructure over any platform or working
system utilizing Chef Inspec.

9. What are the foremost elements of Chef?
Reply:

• Chef
  Server – You’ll be able to consider the Chef Server because the central retailer for that
  accumulates all the information that’s crucial for configuring the nodes.
• Chef
  Node – The Chef Node might be regarded as a shopper answerable for
  sharing information throughout a community and it’s primarily based on the chef-client
  structure.
• Chef Workstation – The Chef Workstation might be
  regarded as the host for modifying the configuration information and
  cookbooks that are then forwarded to the Chef Server.

10. What’s a Chef Node and what’s its significance?
Reply:
We will consider the node as a bodily server or a digital machine that
is a constituent of the Chef structure. You’ll be able to execute any useful resource
with Chef.

11. Why are SSL certificates utilized in Chef?
Reply:
You want the SSL certificates for the preliminary configuration of the Chef
and for creating the certificates and personal keys in Nginx. This ensures
that the proper information might be accessed between the Chef Shopper and Chef
Server.

12. What’s the significance of a Signed Header?
Reply:
The Signed Header is required for the validation of the interplay
between the Chef node, server, and signed header authentication.

13. What’s the significance of Chef starter equipment?
Reply:
The starter equipment is required for creating the configuration information in Chef.
It offers you the knowledge for interacting with the server and
defining the configuration file. You’ll be able to simply obtain the starter equipment
and use it on the desired place on the workstation.

14. What’s the course of for updating a Chef Cookbook?
Reply:

• From the Workstation run the Knife SSH
• Run the SSH and Chef-client on the server straight
• You should use the Chef-client as a daemon for restarting the service as wanted.

15. Which command helps in importing a cookbook to the Chef server?
Reply: The command for importing a cookbook to the Chef server is “knife cookbook add”.

16. What’s Information Luggage in Chef?
Reply:
Information Luggage are world variables saved within the type of JSON information. Information
Luggage are accessible from Chef Server. The indexing of knowledge luggage helps in
simply looking for it or entry it by a recipe.

17. How does Chef-apply differ from Chef-client?
Reply:

• Chef-apply
  is an executable program that runs a single Recipe from the command
  line. It is part of the Chef growth equipment and an effective way to
  discover assets.
• Chef-client applies a Cookbook. It’s used
  for manufacturing functions the place you sometimes run Chef-client to use one
  or extra cookbooks.

18. What would you set your cookbook’s model to as soon as it is able to use in manufacturing?
Reply:
In accordance with Semantic Versioning, you need to set your cookbook’s
model quantity to 1.0.0 as soon as it is able to use in manufacturing.

19. How does a Cookbook differ from a Recipe in Chef?
Reply:
A Recipe is a set of Assets, and primarily configures a
software program bundle or some piece of infrastructure. A Cookbook teams
collectively Recipes and different info in a means that’s extra manageable
than having simply Recipes alone.

20. What’s the distinction between a recipe and cookbook in Chef?
Reply:
Chef recipe is a mix of assets for configuration of a
software program bundle. Chef recipe can be very best for configuring a sure
a part of the infrastructure. Nevertheless, a Cookbook is a set of Chef
Recipes. Additionally, a Chef cookbook incorporates supporting info that
improves the benefit of configuration administration.

21 What’s distinction between Chef and Puppet?
Whereas each Chef and Puppet is used for server automation, this diagram from Edureka explains the distinction between Chef and Puppet clearly:

That is all in regards to the 21 Chef Interview Questions for DevOps Interviews. These questions covers important Chef ideas and they’re nice to each study and revise them. You now
haven’t any motive to fret or complain as a result of you have got all you have got been
missing for all this whereas. Simply get out of your consolation zone and be
prepared for the interview as a result of this time spherical you’ll move and also you
received’t imagine it. Your time to seize that success has lastly come. Go
for it with out hesitation. Want you the easiest.

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