应用程序网关入口控制器仅适用于根路径 /

Question

我已经从以下 YAML 部署了 Microsoft 的标准 aspnet 应用程序：

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: microservicesapp
  annotations:
    kubernetes.io/ingress.class: azure/application-gateway
spec:
  rules:
  - http:
      paths:
      - path: /
        backend:
          serviceName: aspnetapp
          servicePort: 80
---
apiVersion: v1
kind: Service
metadata:
  name: aspnetapp
spec:
  selector:
    app: aspnetapp
  ports:
  - protocol: TCP
    port: 80
    targetPort: 80
---
apiVersion: v1
kind: Pod
metadata:
  name: aspnetapp
  labels:
    app: aspnetapp
spec:
  containers:
  - image: "mcr.microsoft.com/dotnet/core/samples:aspnetapp"
    name: aspnetapp-image
    ports:
    - containerPort: 80
      protocol: TCP

当我调用与我的 AGW 资源关联的公共 IP 时，一切正常。但是，我想配置入口的路径，使其成为/test. 就像这样：

  - http:
      paths:
      - path: /test
        backend:
          serviceName: aspnetapp
          servicePort: 80

当我尝试从集群外部调用端点时，这会导致 502 Bad Gateway。在上述 YAML 中部署资源后，控制器会记录：

I0918 17:25:16.798265       1 health_probes.go:55] Created default HTTP probe defaultprobe-Http
I0918 17:25:16.798272       1 health_probes.go:56] Created default HTTPS probe defaultprobe-Http
I0918 17:25:16.798279       1 ingress_rules.go:148] Found backend:default/aspnetapp
I0918 17:25:16.798405       1 health_probes.go:70] Created probe pb-default-aspnetapp-80-microservicesapp for ingress default/microservicesapp at service default/aspnetapp
I0918 17:25:16.798613       1 backendhttpsettings.go:190] Created backend http settings bp-default-aspnetapp-80-80-microservicesapp for ingress default/microservicesapp and service default/aspnetapp
I0918 17:25:16.798671       1 backendaddresspools.go:37] Created default backend pool defaultaddresspool
I0918 17:25:16.798698       1 backendaddresspools.go:48] Created backend pool pool-default-aspnetapp-80-bp-80 for service default/aspnetapp
I0918 17:25:16.798709       1 frontend_listeners.go:121] Processing Rules for Ingress: default/microservicesapp
I0918 17:25:16.798828       1 requestroutingrules.go:349] Attached pool pool-default-aspnetapp-80-bp-80 and http setting bp-default-aspnetapp-80-80-microservicesapp to path rule: pr-default-microservicesapp-0
I0918 17:25:16.798861       1 requestroutingrules.go:107] Bound path-based rule: rr-e1903c8aa3446b7b3207aec6d6ecba8a to listener: fl-e1903c8aa3446b7b3207aec6d6ecba8a ([    ], 80) and url path map url-e1903c8aa3446b7b3207aec6d6ecba8a
I0918 17:25:16.808144       1 mutate_app_gateway.go:174] Generated config:
...

设置路径（例如 ）/test以使所有到该路径的流量都定向到 aspnetapp 服务的正确方法是什么？

Answer 1

在入口资源中添加路径前缀注释。该appgw.ingress.kubernetes.io/backend-path-prefix: "/"注释告诉应用程序网关创建一个 HTTP 设置，该设置将覆盖路径的路径/test前缀/

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: microservicesapp
  annotations:
    kubernetes.io/ingress.class: azure/application-gateway
    appgw.ingress.kubernetes.io/backend-path-prefix: "/"
spec:
  rules:
  - http:
      paths:
      - path: /test
        backend:
          serviceName: aspnetapp
          servicePort: 80