k8s安装ingress-nginx的详细步骤
master节点: 10.6.14.23

第一步: 准备yaml文件
1,ingress-nginx我们选择0.20.0版本 https://github.com/kubernetes/ingress-nginx/tree/nginx-0.20.0

mkdir ingress-nginx
#替换defaultbackend-amd64镜像地址
sed -i 's#k8s.gcr.io/defaultbackend-amd64#registry.cn-qingdao.aliyuncs.com/kubernetes_xingej/defaultbackend-amd64#g' mandatory.yaml  
#替换nginx-ingress-controller镜像地址
 sed -i 's#quay.io/kubernetes-ingress-controller/nginx-ingress-controller#registry.cn-qingdao.aliyuncs.com/kubernetes_xingej/nginx-ingress-controller#g' mandatory.yaml  
#修改service-nodeport.yaml
vi service-nodeport.yaml

apiVersion: v1
kind: Service
metadata:
  name: ingress-nginx
  namespace: ingress-nginx
  labels:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx
spec:
  type: NodePort
  ports:
    - name: http
      port: 80
      targetPort: 80
      protocol: TCP
      nodePort: 32080  #http
    - name: https
      port: 443
      targetPort: 443
      protocol: TCP
      nodePort: 32443  #https
  selector:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx

第二步: 准备镜像

#在所有的节点上执行
 docker pull registry.cn-qingdao.aliyuncs.com/kubernetes_xingej/defaultbackend-amd64:1.5
 docker pull registry.cn-qingdao.aliyuncs.com/kubernetes_xingej/nginx-ingress-controller:0.20.0

第三步: 执行部署命令

kubectl create namespace ingress-nginx
kubectl apply -f mandatory.yaml
kubectl apply -f service-nodeport.yaml

# 出现异常:
error: unable to recognize "lzb-test.yaml": no matches for kind "Deployment" in version "extensions/v1beta1"

# 修改mandatory.yarml文件
 apiVersion: extensions/v1beta1  修改成 apiVersion: apps/v1

# 查看pod的运行状态
kubectl get pods -n ingress-nginx
#service状态及暴露端口
kubectl get svc -n ingress-nginx  

到此安装完成, 输入 http://10.6.14.23:32080/ 如果显示, 则说明安装成功

现在开始配置调转别的服务
新建一个服务

vi deploy-demon.yaml

apiVersion: v1
kind: Service
metadata:
  name: myapp
  namespace: default
spec:
  selector:
    app: myapp
    release: canary
  ports:
  - name: http
    port: 80
    targetPort: 80
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp-deploy
spec:
  replicas: 5
  selector:
    matchLabels:
      app: myapp
      release: canary
  template:
    metadata:
      labels:
        app: myapp
        release: canary
    spec:
      containers:
      - name: myapp
        image: ikubernetes/myapp:v2
        ports:
        - name: httpd
          containerPort: 80

#部署
kubectl apply -f deploy-demon.yaml 
kubectl get pods

测试服务启动成功, 现在开始配置ingress

vi ingress-myapp.yaml 

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ingress-myapp
  namespace: default
  annotations: 
    kubernetes.io/ingress.class: "nginx"
spec:
  rules:
  - host: myapp.magedu.com #生产中该域名应当可以被公网解析
    http:
      paths:
      - path: 
        backend:
          serviceName: myapp #这个名称与测试服务的名称相同
          servicePort: 80
          

#启动
kubectl apply -f ingress-myapp.yaml  

在本地电脑的hosts配置

10.6.14.23 myapp.magedu.com

http://myapp.magedu.com:32080/

至此安装完成 与测试完成

参考文档:
https://www.cnblogs.com/hailun1987/p/14162278.html