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Kubernetes Tutorial – The Complete Guide

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26th Sep, 2022
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Kubernetes Tutorial – The Complete Guide

What is Kubernetes?

Kubernetes is an open source cluster management software managing containerised workloads of internet services. Kubernetes supports the technology shift from host-centric to container-centric on any platform. Furthermore, this software enables declarative automation and configuration, causing a rapid rise in popularity while delivering a vast range of features online.

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What does the word mean?

The name “Kubernetes” originates from the Greek root of the word “pilot,” and the abbreviation is termed K8s. The number indicates alphabets between K and S and maintains a sync with the pronunciation of the original word. In 2014, Google open-sourced the Kubernetes project.

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Why learn Kubernetes? 

The Kubernetes project is not a mainstream, traditional, and all-inclusive PaaS (Platform as a Service) platform working at the container level while ensuring continuous development and a comparatively lower probability of technical resources wastage. It also helps in running applications on the cloud and on clusters of physical and virtual applications. 

Kubernetes provides many options for aspiring developers to build their platforms. Here are some basic features and setup guides for Kubernetes.

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Features of Kubernetes

Knowing the fundamentals of the software is essential before heading into complex concepts. So here are the top features of Kubernetes:

  • AUTOMATED ROLLOUTS AND ROLLBACKS

Kubernetes automatically rolls out any changes to the desired application or its configuration while monitoring the application’s stability. Kubernetes identifies it and rolls back the problem from the application itself if anything goes wrong. 

  • STORAGE ORCHESTRATION

Kubernetes automatically helps mount the storage system of the developer’s choice either from a public cloud storage provider or network storage like GCP, AWS, NFS, Gluster, Cinder, Flocker, or Ceph. 

  • AUTOMATIC BIN PACKING

Kubernetes automatically places containers based on resource requirements and other prerequisites to save up resource sharing space and maximise workload utilisation. 

  • SELF-HEALING

Kubernetes automatically replaces all dead, malfunctioning, and unresponsive nodes to maintain the application’s health and does not advertise them until they are ready. 

  • HORIZONTAL SCALING

Kubernetes can scale an application with a simple command, UI, or based on CPU usage.

  • BATCH EXECUTION

Kubernetes manages an application’s batch and CI workloads. 

  • EXTENSIBILITY 

Kubernetes allows one to add/edit new features to their code without destabilising the source code.

  • SERVICE DISCOVERY AND LOAD BALANCE

Kubernetes can name all pods a single DNS name and provide each with its IP address to ease backtracking and load-balancing across pods.

  • SECRET AND CONFIGURATION MANAGEMENT 

Kubernetes allows developers to upload and update secret configuration management without rebuilding one’s image in the stack configuration. 

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Benefits of using Kubernetes for prospective developers

Why are aspiring developers opting for the Kubernetes software in 2022? 

It is the go-to tool for managing modern applications and their holistic, coherent, efficient, and sustainable development. In addition, its container ecosystem is developing. So, it is a good guess that it shall remain the favourite for long.

Here are some of the immediate benefits of Kubernetes giving it an edge over other similar software platforms. 

  • FLEXIBILITY 

Kubernetes can virtually run on all types of container runtimes and clouds, public or private, as long as its host operative mechanism is Linux or Windows 2016. In addition, Kubernetes’ versatility and flexibility enable it to work on all configurations, an excellent feature for developing new applications.

  • MULTI-CLOUD CAPABILITY

As a result of the flexibility, the Kubernetes software can run its workload on a single or cluster of clouds. It can also upscale from one environment configuration to the other to the developer’s advantage. 

  • INCREASED DEVELOPER PRODUCTIVITY

With its developer-friendly approach, Kubernetes allows teams to scale and deploy comparatively faster than competitors, helpful for groups to deploy many times in a single day.

  • OPEN-SOURCE SOFTWARE

Kubernetes is a fully open-sourced, community-type project partnered with the Cloud Native Computing Foundation (CNCF) and Google. It has many sponsors, but the ownership remains under a universal community, allowing transparency.

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Summary: a step toward becoming an expert developer

Learning a new software as an aspiring developer is indeed a work of dedication. However, as much as it is fun, it can become fairly complex with a lack of resources. Therefore, we have the right course for you to get started.

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Profile

Pavan Vadapalli

Blog Author
Director of Engineering @ upGrad. Motivated to leverage technology to solve problems. Seasoned leader for startups and fast moving orgs. Working on solving problems of scale and long term technology strategy.

Frequently Asked Questions (FAQs)

1Is Kubernetes easy to learn?

While Kubernetes makes applications user-friendly and straightforward, its development is complex. Even if Kubernetes is relatively complex to internalise and implement, it will take a developer around 13 hours to complete the Kubernetes learning path.

2Who owns Kubernetes?

Kubernetes was developed by the Cloud Native Computing Foundation (CNCF) and released on the 7th of June, 2014. Currently, Kubernetes is owned by Google. The official repository of Kubernetes is https://github.com/kubernetes/kubernetes, and the official website is https://kubernetes.io/.

3What does Kubernetes exactly do?

Kubernetes is an open-source cluster management software managing containerised workloads of internet services. It equally distributes the application workload towards several Kubernetes clusters and automates the dynamic needs of the containerised applications.

4What are some problems that Kubernetes can solve?

Kubernetes has solved problems like service discovery, load balancing, horizontal scaling, self-healing, automated rollouts and rollbacks, configuration management, and storage orchestration, which is very helpful for aspiring developers.