bhanu2149

1
Basic Interview Questions ForDocker and
Kubernetes
www.visualpath.in
2
What is Kubernetes?

• Kubernetes is a container orchestration tool that
  is used for automating the tasks of managing,
  monitoring, scaling, and deploying containerized
  applications. It creates groups of containers
  that can be logically discovered and managed for
  easy operations on containers.

www.visualpath.in
3
What is Docker?

• Docker is a tool designed to make it easier to
  create, deploy, and run applications by using
  containers.
• Containers allow a developer to package up an
  application with all of the parts it needs, such
  as libraries and other dependencies, and ship it
  all out as one package

www.visualpath.in
4
What is the difference between Kubernetes and
Docker Swarm?

• Docker Swarm is a default container orchestration
  tool that comes with Docker. Docker Swarm can
  only orchestrate simple Docker containers.
  Kubernetes, on the other hand, helps manage much
  more complex software application containers.
  Kubernetes offers support for larger demand
  production environment.

www.visualpath.in
5
What is Orchestration in software?

• Application orchestration in software process
  means you can integrate two or more applications.
  
• You will be able to automate arrangement,
  coordination, and management of computer
  software.
• The goal of any orchestration process is to
  streamline and optimize frequent repeatable
  processes.

www.visualpath.in
6
What is a node in Kubernetes?

• A node in Kubernetes is a worker machine which is
  also known as a minion.
• This node could be a physical machine or a
  virtual machine. For each of the node, there is a
  service to run pods, and it is managed by master
  components.
• The node services could include kubelet,
  kube-proxy, and so on.

www.visualpath.in
7
What is Kubelet?

• You can think of Kubelet as the lowest level
  component in a Kubernetes.
• The Kubelet is responsible for making the
  individual machines to run.
• The sole purpose of a Kubelet is that in a given
  a set of containers, it has to ensure that they
  are all running.

8
Docker Client 

• This performs Docker build pull and run
  operations to establish communication with the
  Docker Host. The Docker command uses Docker API
  to call the queries to be run.

www.visualpath.in
9
Docker Host

• This component contains Docker Daemon, Containers
  and its images.
• The images will be the kind of metadata for the
  applications which are containerized in the
  containers.

www.visualpath.in
10
What is Docker Container?

• A Docker Container is a form of encapsulation to
  the application which holds all the dependencies
  which share the kernel with other containers in
  the duration of running the isolated processes on
  the host operating system.
• A Docker container can be created by
  creating a Docker image. These Docker images can
  be run after that using Docker Commands

www.visualpath.in
11
Docker containers are the instances of the Docker
images at the runtime.Docker images can be
stored in any public hosts or private hosts like
Docker hub. Docker Image is a set of files
which can be run in an isolated process.
www.visualpath.in
12
What is a Docker image?

• A Docker image is a file, comprised of
  multiple layers, used to execute code in a
  Docker container. An image is essentially built
  from the instructions for a complete and
  executable version of an application, which
  relies on the host OS kernel.

www.visualpath.in
13
Why is Kubernetes important?

• Kubernetes is an open source container
  orchestration platform, allowing large numbers of
  containers to work together in harmony, reducing
  operational burden. It helps with things like
  Running containers across many different machines.

www.visualpath.in
14

• Visualpath Training Institute
• For More Information About
• Docker and kubernetes Online Training
• Contact 91 9989971070
• Website www.visualpath.in

15
Thank you
www.visualpath.in