Kubernetes: What Is It?

Posted: Aug 21 2019, 4:04am CDT | by , in Technology News


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Kubernetes: What Is It?

If you work in tech, you’ve probably heard the term Kubernetes thrown around quite a bit.

Kubernetes, or k8s as they’re sometimes abbreviated, are the most widely used container orchestrator in the market today by far. According to the world’s leading research and advisory firm Gartner, “by 2022, more than 75% of global organizations will be running containerized applications in production.”

So, what exactly is Kubernetes and how can you use it to your benefit when working on web applications or other development projects?

Kubernetes is a portable, expandable, open-source platform created originally by Google to manage containerized workloads. It uses declarative data, automation, and configuration settings to its advantage in order to orchestrate containers. Its range of operations and functionalities include service discovery and load balancing, storage management, CPU and memory (RAM) management, and secrets management. Google, however, no longer maintains it. Instead, it is now maintained by the Cloud Native Computing Foundation.

The adoption of Kubernetes has truly transformed how cloud-native applications are developed and deployed today. They make it possible for faster delivery, have superior portability, and above all else, a more secure infrastructure with several security missions. The advancements in securing Kubernetes has rapidly increased because it’s an open-source platform and thousands of developers are contributing their knowledge and expertise.

The architecture of Kubernetes is quite complex, but its basic components include nodes, clusters, persistent volumes, containers, pods, and deployments. Here is a brief explanation of each component:

Nodes – They are the most basic unit of computing and can be a physical machine or a virtual machine. Collectively they are also known as a worker machine, and individually, each worker node in managed by the Master node. Nodes are the components that make it possible to operate pods.

Clusters – When you group together nodes with pooled resources, you create a cluster. Clusters work by using the resources from the nodes to run program workloads when needed.

Persistent volumes – These act like an external hard drive since nodes can’t retain any data after the power to the device has been turned off. Persistent volumes are mounted to the clusters rather than any individual nodes.

Containers – These are highly portable, self-contained units of software that run on Kubernetes. Containers consist of whatever dependencies are needed for execution. It is possible to add multiple processes into a container, but if you limit the number of processes running, it makes it easier to update and troubleshoot if any problems or anomalies arise.

Pods – Containers aren’t run directly on Kubernetes but rather are packaged into groups called pods. Pods all share the same resources and are on the same local network, so they can communicate easily with other containers in the same pod. Pods makes it easy to replicate and scale your application.

Deployments – This is where you decide how to configure the application you’re running. They are a group of pods without unique identities, which are launched directly on a cluster. They automatically replace any configuration that fails or is unresponsive, essentially acting like a back-up.

Also Read: Technology Improvement: 5 Benefits in Modern sWorld

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The Author

<a href="/latest_stories/all/all/2" rel="author">Luigi Lugmayr</a>
Manfred "Luigi" Lugmayr () is the founding Chief Editor of I4U News and brings over 25 years experience in the technology field to the ever evolving and exciting world of gadgets, tech and online shopping. He started I4U News back in 2000 and evolved it into vibrant technology news and tech and toy shopping hub.
Luigi can be contacted directly at ml[@]i4u.com.




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