配置 K8S Network 节点

Network 节点的主要目的是集群整个流量的入口, 可以是一个或多个, 跟 Ingress 控制器一起使用, 用于负载均衡和路由流量到集群内部的服务。

这里将 worker2 (192.168.88.103) 作为 Network 节点，打上Label：

kubectl label node worker2 node-role.kubernetes.io/network=edge

配置 nginx ingress controller

下载 helm 包

https://github.com/kubernetes/ingress-nginx/releases/download/helm-chart-4.7.0/ingress-nginx-4.7.0.tgz (opens in a new tab)

在 Network 节点上安装 nginx ingress controller

values.yaml

controller:
  ingressClassResource:
    name: nginx
    enabled: true
    default: true
    controllerValue: "k8s.io/ingress-nginx"
  admissionWebhooks:
    enabled: false
  replicaCount: 1
  image:
    # registry: registry.k8s.io
    # image: ingress-nginx/controller
    # tag: "v1.8.0"
    registry: ccr.ccs.tencentyun.com
    image: jansora/registry.k8s.io_ingress-nginx_controller
    tag: "v1.8.0"
  hostNetwork: true
  nodeSelector:
    node-role.kubernetes.io/network: 'edge' # 标记 pod 运行到 network 节点
  affinity:
    podAntiAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
        - labelSelector:
            matchExpressions:
              - key: app
                operator: In
                values:
                  - nginx-ingress
              - key: component
                operator: In
                values:
                  - controller
          topologyKey: kubernetes.io/hostname
  tolerations:
    - key: node-role.kubernetes.io/master
      operator: Exists
      effect: NoSchedule
    - key: node-role.kubernetes.io/master
      operator: Exists
      effect: PreferNoSchedule

安装

helm install ingress-nginx -n ingress-nginx ./ingress-nginx-4.7.0.tgz --values ./values.yaml --create-namespace

部署 K8S worker 节点部署 Metrics Server