边缘部署集群

在边缘部署节点

k3s

专门被设计在物联网和边缘计算等资源受限环境中运行

二者的比较

Air-gap 一种网络安全措施

Kubeedge

将原生容器化应用编排和设备管理扩展到边缘主机。

KubeEdge 由两部分组成：云和边缘。

Kubeedge的主要功能：

• Users can orchestrate apps, manage devices, and monitor app and device status on edge nodes using KubeEdge, just like they can with a regular Kubernetes cluster in the cloud.
• Bidirectional communication, able to talk to edge nodes located in private subnets. Supports both metadata and data.
• Even when the edge is disconnected from the cloud, it can operate autonomously. Metadata is persistent per node; thus, no list-watching is required during node recovery. This allows you to get ready faster.
• At the edge, resource use is optimized. The memory footprint has been reduced to around 70 MB.
• For IoT and the Industrial IoT, connectivity between applications and devices is simplified.
• Native support for x86, ARMv7, and ARMv8 architectures.
• Support for running third-party plugins and apps that rely on Kubernetes APIs on edge nodes with an autonomous Kube-API endpoint at the edge.

在边缘部署虚拟节点

在这种方法中，虚拟节点代理驻留在云中，但节点和Pods的抽象部署在边缘。承载容器的边缘节点通过虚拟节点代理进行命令控制。

在边缘部署k8s设备

The Kubernetes device plugin framework is used to expose leaf devices as resources in a Kubernetes cluster in this approach.

k8s设备接口将叶设备暴露在k8s资源中。

叶设备：多种传感器、控制器、MCU等

Example：

Microsoft Akri

etcd存储键值对，即一些crd设备 Custom Resource Define