- What is kubernetes and why it is used full#
- What is kubernetes and why it is used software#
- What is kubernetes and why it is used Offline#
This can save money and helps you to get the most out of your IT resources. Kubernetes automatically spins up any new containers on under-utilized nodes. So, you are always ready for a sudden spike in website traffic. Kubernetes uses information from user requests and CPU usage to increase or decrease the number of nodes running to match demand.
What is kubernetes and why it is used Offline#
This means services don’t have to go offline to be maintained. If a server needs to be rebooted, containers can be moved to another node whilst maintenance is carried out. This means your business can keep running as normal whilst the failure is resolved. If there is a server failure, containers can be recreated on a working node to avoid downtime. So, new features and services can get to market quicker. This allows development teams to ship updates quickly without the risk of breaking anything. Kubernetes can auto-restore from errors by rolling back to the last working version of the software. Here are 5 key benefits of Kubernetes for developers and businesses: The master node then instructs the worker nodes to carry out actions that will drive the application from its current state towards the desired state, according to the information inputted. You can use a User Interface or Command Line Interface to input information to the master node (via an API). There are multiple ‘worker nodes’ (slave) where containers are deployed and a ‘master node’ (master) which controls the deployment. Kubernetes has a master-slave architecture. For now, we will just introduce the architecture behind how Kubernetes works.
What is kubernetes and why it is used full#
So I’m not going to cover that in this guide (though we do have a full Kubernetes Glossary if you’re interested). There is a lot of jargon associated with Kubernetes and the exact mechanics of how everything works can vary depending on the specifics of the setup being used. Learn more about containers and Docker here. So, in summary, Kubernetes was developed so that people could get the full benefits of containerisation technology, without having to spend all of their time managing the containers.ĭid you know: Docker is the most popular containerisation tool, possessing ~95% market share. How do you manage, rollout, rollback, maintain and repair them all? The solution – Kubernetes. Containers are also fast and very lean, you can store thousands of containers on a single server! This is an efficient use of resources and can save on hosting costs.īut, having thousands of individual containers also presents a problem. So, an online banking app, for example, would be able to deploy changes to the saving accounts section without having to redeploy the current accounts section as well. And there are many benefits to building applications in this way too.įor a start, it reduces dependencies within applications. The idea of containerised workloads is inspired by the shipping industry, where the introduction of standardised shipping containers and handling equipment made transportation more efficient.
Each microservice controls one feature of the application and is stored in its own container. Using this technology, large monolithic applications can be transitioned into multiple microservices. This means that they were built, run and stored in a way that all of the components were interconnected and interdependent.īut, in recent years, containerisation technology has emerged. In the past, the majority of applications were monolithic. To understand why Kubernetes is needed, we first need to understand what containerised workloads are and the problems that arise when using them. It enables development teams to automate the deployment, scaling and management of applications.
What is kubernetes and why it is used software#
Kubernetes is an open source software tool for managing containerised workloads. for more hands-on learning, then we highly recommend taking a full course too. Rather view a presentation than read documentation? Visit Bytemark’s SlideShare profile to view this guide as a slideshow.Ĭontinue Learning: Udemy courses are a great resource for information when you’re first trying to get my head around Kubernetes. Dispelling some common misconceptions about Kubernetes.An introduction to Kubernetes architecture and how it works (without all the demos, commands and huge chunks of code).Some background behind why Kubernetes was developed.This post will cover the following, select a topic to jump straight to that section: So, all of the jargon is explained and we don’t just skim over the basics! This article is for anyone who is a beginner to Kubernetes, or developers who’d like their company to adopt the tech but need to explain the value to other decision-makers.
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