1. Introduction
  2. How Kubernetes Works
  3. Install Kubernetes
  4. Kubernetes Hello World
  5. Kubernetes Hello World
  6. Kubernetes Networking
  7. Storage in Kubernetes

Container Orchestration with Kubernetes

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How Kubernetes Works

Kubernetes

A Kubernetes cluster architecture comprises a set of interconnected components that work together to facilitate the deployment, management, and scaling of containerized applications. The key components include:

  • Master Node:

    • API Server: Serves as the entry point for the Kubernetes API, handling requests and managing communication with other components.
    • Controller Manager: Maintains the overall cluster state by monitoring and controlling controller loops that regulate different aspects of the system.
    • Scheduler: Assigns workloads to available worker nodes based on resource requirements and constraints.
    • Cloud Controller Manager (Optional):Interfaces with cloud-specific APIs to manage resources on cloud providers, enabling seamless integration with cloud services.

  • Worker Nodes (Minions):

    • Kubelet: Ensures that containers are running on each node, communicating with the API server and managing container lifecycles.
    • Kube Proxy: Maintains network rules on nodes, enabling communication between Pods and external network entities.
    • Container Runtime: The software responsible for running containers, such as Docker or containerd.

  • etcd:A distributed key-value store that stores the cluster’s configuration data and the current state, ensuring consistency across the entire cluster.

  • Add-ons: Additional components like DNS servers, dashboards, and monitoring tools that enhance the cluster’s functionality and ease of use.