In Present days, container-based microservice architectures have drastically changed the way development and operations teams (DevOps) work, test and deploy applications. Containers help organizations to scale and deploy applications on the fly, but containers have also brought the organizations new additional challenges and complexity.
Many businesses are now deploying lots of containers daily as it is effortless & requires fun-size time in setting up the infrastructure, but wait, how do they really manage it?
The answer is Kubernetes.
Yes, you heard that right. Kubernetes is Everywhere now.
So what is Kubernetes? Why do people use them? What does it do? Lots of question eh. Here are the answers.
THE WHAT?
Kubernetes is originally developed by Google and is primarily designed for large scale applications which comprises of tons of services, mostly microservices. You really don’t need a Kubernetes environment for monolith applications or apps with predictable or low demands.
THE WHY?
But Why Kubernetes is so popular and lots of organizations does use it? There are several factors which support the statement but below are few of them which has been hand-picked for simplicity.
- Cost – Containers are light-weight in nature, which means they require less CPU & memory to operate when compared with the VMs & other Hypervisor technologies like VMware ESX, Hyper-V etc.
- Stay Updated – Now you don’t have to wait/chase vendors for procuring new machines to spin up your applications when in need, Just provision & move ahead with Kubernetes to Develop, Deploy & Test your applications and speed up your release cycles.
- WORA – Write Once, Run Anywhere – Tightly coupled architectures make DevOps team jobs difficult as every application depends on the underlying architecture but Kubernetes as said its omnipresent, it can run anywhere call it in AWS, GCP, Azure and On-Premise as well.
THE HOW?
Kubernetes is an open source distributed system that abstracts the underlying physical infrastructure, making it easier to run containerized applications at scale.
Kubernetes High Level Architecture
As you see in the above picture we have Kubelet, Kubectl, Kube-Proxy and other Kubernetes related terminology which is going to be published in the next blog post/series.
Stay Tuned for the next post on Kubernetes Security.
Chaitanya Dande
Senior Application Security Engineer, Certified Ethical Hacker, Penetration Tester, Freelance Web Developer & Trainer.