What

一个容器编排系统（自动化部署、扩缩容、管理）

Kubernetes, also known as K8s, is an open-source system for automating deployment, scaling, and management of containerized applications.

Keyword：container、automating、deployment、scaling、management

Components

• Control Plan

  • kube-apiserver

  • etcd

  • kube-scheduler

    Control plane component that watches for newly created Pods with no assigned node, and selects a node for them to run on.

  • kube-controller-manager

  • cloud-controller-manager

• Node Components

  • kubelet

    An agent that runs on each node in the cluster. It makes sure that containers are running in a Pod.

  • kube-proxy

    kube-proxy is a network proxy that runs on each node in your cluster, implementing part of the Kubernetes Service concept.

  • Container runtime

  The container runtime is the software that is responsible for running containers. Kubernetes supports several container runtimes: Docker, containerd, CRI-O, and any implementation of the Kubernetes CRI (Container Runtime Interface).

• Addons

  • DNS
  • Web UI(Dashboard)
  • Container Resource Monitoring
  • Cluster-level Logging