添加helm仓库

helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
helm repo update

拉取ingress-nginx包

helm pull ingress-nginx/ingress-nginx

启用ingress class

进入pull下的ingress helm包中，修改values.yml文件中的如下内容，启用ingress class（由于使用的k8s环境中存在多个ingress controller 所以需要启用ingressclass)

vi values.yml

  ingressClassResource:
    name: test-nginx
    enabled: true
    default: false
    controllerValue: "k8s.io/test-ingress-nginx"

    parameters: {}

  ingressClass: test-nginx

最后启用安装使用ingress-nginx

helm install 自定义名称 --namespace 被安装的命名空间 ingress的包文件夹名

安装好后 ingress-nginx-controller部署完成
最后的最后，按如下范例新建ingress：

apiVersion: networking.k8s.io/v1beta1
  kind: Ingress
  metadata:
    annotations:
      #values.yaml中自定义的ingressclass名称
      kubernetes.io/ingress.class: hainan-nginx  
    name: example
    namespace: foo
  spec:
    rules:
      - host: www.example.com
        http:
          paths:
            - backend:
                serviceName: exampleService
                servicePort: 80
              path: /
    # This section is only required if TLS is to be enabled for the Ingress
    tls:
        - hosts:
            - www.example.com
          secretName: example-tls

If TLS is enabled for the Ingress, a Secret containing the certificate and key must also be provided:

  apiVersion: v1
  kind: Secret
  metadata:
    name: example-tls
    namespace: foo
  data:
    tls.crt: <base64 encoded cert>
    tls.key: <base64 encoded key>
  type: kubernetes.io/tls