What is K8s? What are Pod and Node? Why do businesses need them? If you would like to learn more about the architecture, components, advantages, and related brands of Kubernetes (K8s), don’t miss this article. In this article, we will introduce the basics and the benefits of using K8s!
Kubernetes is abbreviated as K8s because there are eight letters separating its initial (K) and final (s) characters. As a system for deployment automation and container management, it is suitable for managing resources and assigning privileges when securing a stable container environment while increasing containers.
K8s is often compared with Docker Swarm. They are different because Docker Swarm must be constructed under the Docker architecture. As a result, its functions are limited and cannot be overcome. Due to its extensive functionality, K8s has gradually replaced the market prominence of Docker Swarm.
How can K8s help manage and deploy containers? To understand how it works, it is necessary to first understand its components and architecture.
A container is a sandboxed application that includes the associated system programs and required executables for running the application. Hence, the application can be executed within the container without additional deployment and installation.
A pod is the smallest unit of operation of K8s. It is like a container set, i.e., a pod can contain one or more containers (depending on the required number of containers for operation). Each pod corresponds to one application, and containers in a pod will share the same network resources (e.g., IP address and host name).
There are two types of nodes:
1. Worker Node
A worker node is the major operating node required for execution, and each worker node corresponds to one machine that can be subdivided into three components: kubelet, kube-proxy, and container runtime.
2. Control Plane
Formerly called the master node, a control plane takes charge of the management of each worker node. Hence, it can be considered as the command center of K8s. A control plane is composed of four components: kube-apiserver, etcd, kube-scheduler, and kube-controller-manager.
Why recommend K8s? Because it has three advantages:
Because different containers can run on a container platform at the same time, there is no problem to deploy multiple containers in one machine or multiple machines.
Additionally, because K8s can automatically detect and manage the state of individual containers, users can run automatic expansion of containers. When a container failure is detected, users can reboot the system to ensure accuracy and continuity of service operation.
Because each service or system in K8s can be deployed independently, an error in one system will not affect overall system operation, and each container supports independent modification by need. Hence, K8s enables greater flexibility for utilization.
As such, K8s not only brings a stabler container environment but also makes operations simpler and more efficient with its automated management.
If you would like to discover more about Kubernetes, please refer to the different brands of K8s products distributed by MetaAge (formerly Sysage Technology) to explore the application of K8s.
Portworx by Pure Storage offers a unified Kubernetes-native solution. With Portworx, you can run any applications in the cloud for storage, data protection, data security, migrations, etc. and enjoy high availability.
Red Hat OpenShift is a security-focused K8s platform tailored for hybrid cloud application. It offers functions including workflow automation, CI/CD tools integration, etc. and supports the execution of any cloud services to streamline workflow, stay competitive, and achieve better work effectiveness.
VMware Tanzu integrates virtual platforms for administrators to get familiar with the management interface of vCenter for managing virtual machines and K8s platforms. It offers a fast, flexible, and secure K8s environment like in the public cloud. Additionally, by controlling hybrid clouds and multicloud K8s environments, it makes container management safer and easier.
If you are interested in discovering more brands distributed by MetaAge (formerly Sysage Technology), please visit the MetaAge corporate website to find out more. If you would like to understand more about these brands, please visit Modern Applications.