k8s学习-CKA真题-七层负载均衡Ingress

Posted 2023-02-24 lady_killer9

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题目

分析

在ing-internal 命名空间下创建一个ingress，名字为pong，代理的service hi，端口为5678，配置路径/hi。
验证：访问curl -kL <INTERNAL_IP>/hi会返回hi

命令

环境搭建

这里就以一个nginx服务为例

创建命名空间

kubectl create ns ing-internal

deploy-hi.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-hi
  labels:
    app: nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.14.2
        ports:
        - containerPort: 80
          name: http

创建deployment

kubectl create -f deploy-hi.yaml -n ing-internal

service-hi.yaml

apiVersion: v1
kind: Service
metadata:
  labels:
    app: nginx
  name: hi
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: http
  selector:
    app: nginx
  sessionAffinity: None
  type: NodePort

创建service hi

kubectl create -f service-hi.yaml -n ing-internal

写入hi到/hi路径

cd /usr/share/nginx/html && mkdir hi && echo "hi" > hi/index.html

解题

由于测试环境端口是80，所以下面的不是题目对应的答案
ingress-hi.yaml

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: pong
  namespace: ing-internal
spec:
  rules:
  - http:
      paths:
      - path: /hi
        pathType: Prefix
        backend:
          service:
            name: hi
            port:
              number: 80

命令

kubectl create -f ingress-hi.yaml

题目对应答案如下：

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: pong
  namespace: ing-internal
spec:
  rules:
  - http:
      paths:
      - path: /hi
        pathType: Prefix
        backend:
          service:
            name: hi
            port:
              number: 5678