What is Kubernetes and what are its advantages?
Kubernetes, also abbreviated as “K8s”, organizes containerized applications to run on a group of hosts. The Kubernetes system automates the deployment and manages the cloud built-in applications which uses on-premises infrastructure or public cloud platforms. It generally distributes application workloads within a Kubernetes group and automates dynamic container networking requirements. Kubernetes also assign storage and determined volumes to running containers, provides automatic scaling, and works continuously to prolong the desired situation of applications, providing resiliency.
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Features of Kubernetes
Kubernetes has several different features which helps to organize the containers across the multiple hosts, automate the management of K8s clusters, and maximize the resource usage throughout the better utilization of infrastructure. Important features of Kubernetes include:
· Auto-scaling.
· Lifecycle management.
· Declarative model.
· Resilience and self-healing.
· Persistent storage.
· Load balancing.
· DevSecOps support.
Architecture of Kubernetes and How does it Works?
Containers encloses an application in a form which is portable and easy to deploy. The Kubernetes architecture is basically designed to run containerized applications. A Kubernetes group comprises of at least one control plane and at least one worker node. The control plane consists of two main responsibilities. It reveals the Kubernetes API through the API server and manages the nodes that build the group. The control plane makes decisions about the cluster management and determine and respond to cluster events. The smallest unit of implementation for an application running in Kubernetes is the Kubernetes Pod, which comprises of one or more containers.
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Kubernetes Terminology
It is important to get familiar with the names and functions of the major components of Kubernetes that are part of the control plane or whose which execute on Kubernetes nodes. The control plane consists of four primary components those which are used to control communications, manage nodes and keep a record of the state of a Kubernetes group. The primary components are:
· Kube-apiserver.
· etcd.
· Kube-scheduler.
· Kube-controller-manager.
Kubernetes node has three major components:
· Kubelet.
· Kube-proxy.
· Container runtime.
Advantages of Kubernetes
The Kubernetes platform is most in-demand nowadays because it has several advantages:
Portability: Containers are portable within a range of environments from virtual environments to bare metal.
Integration and extensibility: Kubernetes is extensible to work with the solutions you already depend on, including logging, monitoring, and alerting services.
Cost efficiency: Kubernetes built-in resource optimization, automated scaling, and flexibility to run workloads where your IT spend is up to you.
Scalability: Cloud built-in applications scale horizontally. Kubernetes uses “auto-scaling,” spinning up additional container examples and scaling out automatically in return to demand.
API-based: The basic fabric of Kubernetes is the REST API. Everything in the Kubernetes environment can be managed through programming.
Simplified CI or CD: CI or CD is a DevOps practice which automates building, testing and locating applications to production environments.
What do you mean by Container Orchestration?
Container orchestration self-operate most of the tasks needed to run containerized workloads and services, including the operations those are necessary to the Kubernetes container lifecycle: provisioning, deployment, scaling, networking and load balancing.
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