Kubernetes VS Docker – difference between Docker and Kubernetes

Programming with Docker

Nowadays, it is pretty common to hear people asking which one is better among Kubernetes and Dockers. Although they are completely different technologies that can be used together in building containerized apps. In this article, we will be discussing the differences between Docker and Kubernetes and you can decide which one to use based on that. But before discussing the differences between them, you need to understand what Docker and Kubernetes are.

What are Docker and Kubernetes?

Docker information
Source: docker.com

Docker is one of the most popular container platforms. It contains dependencies required to perform code inside a container. Containers can move within Docker environments of the same OS work without making any changes. To run multiple containers on the same OS, Docker utilizes resource isolation in the OS kernel. You need to understand what containers are before going into detail. 

Some of the issues seen in Dockers are

  • It is a question of how to control and schedule all the containers. 
  • How can you upgrade an application without causing any disturbance to
  • How can you keep an eye on the health of an application and know when to restart the system? 

What are containers?

A container is a standard unit to measure software that packages the code within their area of comfort. When these developers are ready to move, the code does not function in other productions. The reason for the failure of codes is due to different operating systems and libraries. 

Containers can solve crucial issues caused by application development. Containers allow you to separate the code from the infrastructure it is running on. The developers can pack all the other details, such as libraries. A container can function on a computer with a containerized platform. Containers can separate software from its surroundings and assure you that it works perfectly without giving importance to the differences in development and platform.

What is Kubernetes?

Kubernetes information

Kubernetes is an orchestration system. This system can handle a large number of containers and users at the same time. In an application, there will be thousands of containers and users who are interacting with each other simultaneously. If you have to manage and keep track of all these interactions, you need a comprehensive system that is specifically designed with that in mind. 

Kubernetes allows you to organize service discovery and transmission between containers and users. A user and container can stay in contact by giving them a microservice that has its built-in functions for service discovery that can be used repetitively and would be inefficient. 

Kubernetes is an orchestration system that makes it easy to deal with authentication and security at the infrastructure level and to correlate with consistent strategies across all platforms. The orchestration handles the difficult task of organizing container operation, multi-cloud environment microservice availability, and synchronization in a multi-platform. 

An orchestration network administers a dynamic, extensive infrastructure for a container-based application, enabling it to supervise in a protected and highly organized setting while overseeing its interchanges with the outer world.

Kubernetes is ideal and is quite popular because of its operation. Kubernetes has nodes which are the entire infrastructure on which your application operates and is the server of VMs in your area. 

Difference between Docker and Kubernetes

The main difference between docker and Kubernetes is docker is a platform for containerization, whereas Kubernetes is an orchestrator for containers. 

Docker Swarm is an orchestration technology that is identical to Kubernetes. Docker Swarm is commonly tightly integrated into the Docker ecosystem and concentrates on the grouping of Docker containers. One of the significant differences between Docker and Kubernetes is that Docker operates on an individual node, whereas Kubernetes is formulated to work across a group. 

An additional difference between Kubernetes and Docker is that Docker can be operated without Kubernetes, whereas Kubernetes needs a container runtime to function. 

From its preliminary release in 2015, Kubernetes has been widely adopted and is now the standard operator of managing containers and orchestration. Kubernetes procures an infrastructure-level framework to orchestrate containers in order and controls user interaction with them.

Similarly, Docker has become the criterion for container growth and deployment. Docker gives a platform for formulating, deploying, and running containers at a vastly additional primary, nuts-and-bolts grade. It is the basis on which the Kubernetes framework stands.

Kubernetes VS Docker

When the topic is Kubernetes vs. Docker, people are making a comparison between Kubernetes and Docker Swarm. Docker Swarm is a clustering solution found by Docker for Docker containers. Docker Swarm is tightly integrated into the ecosystem of Docker and functions using its API. Similar to schedulers, Docker Swarm gives a way to regulate a large number of containers that are spread across groups of servers. The filtering and scheduling system of Docker Swamp allows it to select optimal nodes in a group to deploy containers.

Whereas Kubernetes is an orchestrator for containers that was created at Google that has been bestowed to the CNCF and is now open-source. It has many users and developers with different tools and add-ons. Kubernetes has the benefit of leveraging Google’s many years of expertise in container administration. Kubernetes is a comprehensive system for automating deployment, scaling containerized applications, scheduling, and endorsing several containerization tools such as Docker.

Does Kubernetes use Docker?

One of the most commonly asked questions is “does Kubernetes use Docker”, and the answer is yes. Kubernetes and Docker function together. You can use Docker to build and execute containers, store and share the images of containers. To pack and distribute containerized applications, Docker is used. Someone can use a Kubernetes cluster to run a Docker build. You can optimize Kubernetes in production and conduct additional services and tools to manage governance, identity, workflows, and DevOps practices. 


We have concluded the article; by now, you must have a basic idea about Docker and Kubernetes. Kubernetes needs Docker to operate, whereas Docker can run without Kubernetes. Both Kubernetes and Docker are industry criteria in their respective areas of expertise, and when combined, they give a well-integrated platform that is suitable for managing containers, deployment, and orchestration at the level. When operated together, it offers better features than using it individually. Kubernetes can function flawlessly with Docker, and Docker has settings so that it can work effectively with Kubernetes. Docker has adopted Kubernetes and even gave its integrated distribution for Kubernetes.