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This article mainly explains "how to view pods and nodes in Kubernetes". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn how to view pods and nodes in Kubernetes.

Kubernetes (K8s) Pods

K8s will create a Pod to host your deployed programs. Pod is an abstract concept in K8s that represents one or more containers (docker or rkt) and the resources common to these containers. These include:

Shared storage, called Volumes (Volume)

Network, mainly a single IP address shared by all components in a cluster

Container parameter information, such as mirror version in the container or specified port mapping, etc.

Pod turns the specified program and its highly coupled dependency modules into a "logical host". For example, a Pod contains Node.js app and a container for another program that provides data support for app. All containers in a Pod share an IP address and port interface (in this case, all interfaces of the computer), are uniformly located and scheduled by K8s, and share the same Node environment.

The Pods is the atomic unit of the K8s platform. When you create an deployer in K8s, the deployer creates a Pods. And each Pod is bound to the Node it is located in until the program is terminated (normally terminated) or deleted. If a Node error occurs, K8s will immediately launch the Pods launched this time on other available nodes.

Nodes

Pod is executed on Node. Node refers to a specific physical machine or virtual machine, and all Node are managed by Master. Multiple Pod,K8s can be launched on a Node to manage all the Pods of a cluster through Nodes. The Master's automatic scheduling takes into account the available resources on each Node.

Every Node needs at least

Kubelet, responsible for Node and Master interaction, specific management of Pods and container modules.

Docker or rkt container. Responsible for pulling the image, unpacking the container, start the program.

Thank you for reading, the above is the content of "how to view pods and nodes in Kubernetes". After the study of this article, I believe you have a deeper understanding of how to view pods and nodes in Kubernetes, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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