k8s申请ingress后，为什么服务地址设置为节点的IP地址？

Question

在 k8s 中应用 ingress 后，我看到服务地址设置为 node's IP 地址？

首先，我添加了入口控制器

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v0.48.1/deploy/static/provider/baremetal/deploy.yaml

其次，我添加入口yml：

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: minimal-ingress1
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
    kubernetes.io/ingress.class: nginx
spec:
  rules:
  - host: "n1.avocado.work"
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: node1
            port:
              number: 80

然后我检查了入口：

kubectl get ingress minimal-ingress1

地址是节点的IP，为什么不是master的IP

我试了很多次，都是一样的结果。我该如何解决？请问有什么线索吗？

Answer 1

如果您使用的是裸机，这是按照设计。查看 this 了解更多信息。

MetalLB provides a network load-balancer implementation for Kubernetes clusters that do not run on a supported cloud provider, effectively allowing the usage of LoadBalancer Services within any cluster.

This section demonstrates how to use the Layer 2 configuration mode of MetalLB together with the NGINX Ingress controller in a Kubernetes cluster that has publicly accessible nodes. In this mode, one node attracts all the traffic for the ingress-nginx Service IP. See Traffic policies for more details.

k8s申请ingress后，为什么服务地址设置为节点的IP地址？

After applying ingress for k8s, why service address was set to node's IP address?

kubernetes

kubernetes-ingress

nginx-ingress