WHAT IS KUBERNETES FOR SOFTWARE
WHAT IS KUBERNETES FOR CODE

Docker is default runtime in kubernetes.From this article, you will learn the basic concepts of Kubernetes Kubernetes (often abbreviated as K8s) offers a framework to run distributed systems efficiently. Kuberenetes uses different container runtimes like Docker, containerd, cri-o or any other. Container Runtime: To run containers as a pod nodes need runtime to make them running.kube-proxy manages network rules in nodes.

Using kube-proxy, pods and services in the cluster can communicate with each other. kube-proxy: kube-proxy provide network proxy on every single node present in the cluster.So kubelet is responsible to runs pods on the nodes in the kubernetes. kube-scheduler instruct kublet to deploy containers and it will deploy pods as described in PodSpecs provided by etcd. kubelet: Kubelet runs on every worker nodes available on cluster.Service Account & Token Controllers: It will manage different service account and access tokens required for other components.Endpoints Controller: Populates the Endpoints object (that is, joins Services & Pods).If any pod gets destroyed it will make a new one. Replication Controller: It maintains the total number of running pods for the deployment.If one or more nodes goes down it will create new node. Node Controller: It control the numbers of nodes in the cluster.kube-controller-manager consists different controllers. kube-controller-manager: A reliable system always needs good controllers to control it’s running components.kube-scheduler helps system to identified pods which are not assigned to any nodes and then it will find suitable node and run it on the selected node. kube-scheduler: There are hundreds of thousands of pods are running in kubernetes and scheduling them on different nodes is an important task for the system.It stores meta information for any kind of deployments inside the kubernetes server. etcd: The kubernetes always need fast and highly available storage mechanism to store data for the clusters.So it can grow and load balance everything as cluster’s size increase. Everything in kubernetes is handled by API server running in system.Every request in system is served by API.kube-apiserver is horizontally scalable. Kube-APIServer: APIs make system fast, easy and reliable.It uses API for communication inside the kubernetes system and it makes it efficient and reliable service in the market. It handles thousands of running containers on single or multiple servers. To overcome this issue, Kubernetes becomes a handy container orchestration, a container management system. So production system needs very reliable and very efficient management system to manage this much amount of containers. It becomes a burden to manage that many containers. Now, there are situations where production system has thousands of containers in organizations. Running an application on container is always best option in production. The containerization becomes trend in productions for organization. Containers share the same host OS and make it’s isolated environment suitable for application without affecting any other containers or host OS. Container bundle application and it’s libraries into one package and make it run on shared OS. In containerization, application run on container, a bundle of application’s packages, libraries or dependencies. To avoid this problem, containerization becomes more important for organization. And most of the times, resources get wasted in virtualizations. So it divides resources amount to make applications running whether an application require that much of resources or not. However, Virtualization shares actual resources with guest os. It will help organization to isolate different application and make them running on different OS. In virtualization, organization run guest OS on top of the host os. So to prevent this issue to happen, Virtualization comes into the picture. So sometimes, other application never gets enough resources and it becomes a headache in production.

WHAT IS KUBERNETES FOR CODE

They build code and deploy it on server and it took too many resources from the server to stay up and running. So there were too many limitations which are affecting production to stay running.

WHAT IS KUBERNETES FOR SOFTWARE

In early era, organizations had ran applications or software on actual server or computer.

What is kubernetes for