该NGINX Ingress Controller为Kubernetes社区制作的（https://github.com/kubernetes/ingress-nginx），与之前写的NGINX公司制作的Ingress Controller（https://github.com/nginxinc/kubernetes-ingress）配置上不一样

安装非常的简单，执行下面的命令即可

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/mandatory.yaml

如果不是部署在云上，可以使用以下命令开启NodePort

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/provider/baremetal/service-nodeport.yaml

安装完成后使用以下命令检测ingress容器状态

kubectl get pods --all-namespaces -l app.kubernetes.io/name=ingress-nginx --watch

使用以下命令可检测所安装的版本

POD_NAMESPACE=ingress-nginx
POD_NAME=$(kubectl get pods -n $POD_NAMESPACE -l app.kubernetes.io/name=ingress-nginx -o jsonpath='{.items[0].metadata.name}')
kubectl exec -it $POD_NAME -n $POD_NAMESPACE -- /nginx-ingress-controller --version

典型的Ingress配置文件如下

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: test
spec:
  rules:
  - host: foo.bar.com
    http:
      paths:
      - backend:
          serviceName: s1
          servicePort: 80
  - host: bar.foo.com
    http:
      paths:
      - backend:
          serviceName: s2
          servicePort: 80

Dashboard的Ingress配置，k8s-dashboard-secret需先创建

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: k8s-dashboard
  namespace: kube-system
  annotations:
    nginx.ingress.kubernetes.io/ssl-redirect: "true"
    nginx.ingress.kubernetes.io/rewrite-target: /
    nginx.ingress.kubernetes.io/secure-backends: "true"

spec:
  tls:
   - secretName: k8s-dashboard-secret
  rules:
   - http:
      paths:
      - path: /dashboard
        backend:
          serviceName: kubernetes-dashboard
          servicePort: 443