title: Bad Gateway when trying to access to http://sge-api.local via minikube / traefik
body: <p>I'm trying to deploy a SpringBoot app in local with Kubernetes and Traefik, with local url.</p>
  
  <p>I already checked the pod, and the logs are OK, it seems the app is waiting for my calls.</p>
  
  <p>But when I use Postman to call: </p>
  
  <pre><code>GET http://sge-api.local/points/12345/search
  </code></pre>
  
  <p>I get: </p>
  
  <pre><code>502 Bad Gateway
  </code></pre>
  
  <p>Here is my config:</p>
  
  <p>Service: </p>
  
  <pre><code>➜  sge git:(master) ✗ kubectl get service -n sge
  NAME            TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)    AGE
  sge-api-local   ClusterIP   10.109.84.138   &lt;none&gt;        8888/TCP   75m
  </code></pre>
  
  <p>Ingress: </p>
  
  <pre><code>➜  sge git:(master) ✗  kubectl get ingress -n sge
  NAME             HOSTS           ADDRESS   PORTS   AGE
  my-ingress   sge-api.local             80      75m
  </code></pre>
  
  <p>Pod: </p>
  
  <pre><code>➜  sge git:(master) ✗ kubectl get logs -n sge sge-api-local-66d77d54ff-6fwc5
  
    .   ____          _            __ _ _
   /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
  ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
   \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
    '  |____| .__|_| |_|_| |_\__, | / / / /
   =========|_|==============|___/=/_/_/_/
   :: Spring Boot ::        (v2.2.0.RELEASE)
  
  2019-10-25 14:51:39.508  INFO 1 --- [           main] com.xxx.sge.MainApplication         : Starting MainApplication on sge-api-local-66d77d54ff-6fwc5 with PID 1 (/myapp.jar started by root in /)
  2019-10-25 14:51:39.705  INFO 1 --- [           main] com.xxx.sge.MainApplication         : No active profile set, falling back to default profiles: default
  2019-10-25 14:53:09.205  INFO 1 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.ws.config.annotation.DelegatingWsConfiguration' of type [org.springframework.ws.config.annotation.DelegatingWsConfiguration$$EnhancerBySpringCGLIB$$5ed484ef] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
  2019-10-25 14:53:10.704  INFO 1 --- [           main] .w.s.a.s.AnnotationActionEndpointMapping : Supporting [WS-Addressing August 2004, WS-Addressing 1.0]
  2019-10-25 14:53:39.002  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8081 (https)
  2019-10-25 14:53:41.107  INFO 1 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
  2019-10-25 14:53:41.203  INFO 1 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.27]
  2019-10-25 14:53:50.004  INFO 1 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
  2019-10-25 14:53:50.004  INFO 1 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 125302 ms
  2019-10-25 14:54:47.609  INFO 1 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
  2019-10-25 14:55:47.302  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8081 (https) with context path ''
  2019-10-25 14:55:47.902  INFO 1 --- [           main] com.xxx.sge.MainApplication         : Started MainApplication in 280.601 seconds (JVM running for 326.759)
  </code></pre>
  
  <p>My app also appears OK in traefik dashboard.</p>
  
  <p>I have others app that also run in .local url </p>
  
  <p>I also have set an entry in <code>/etc/hosts</code> with <code>sge-api.local</code> to 127.0.0.1</p>
  
  <p>Here is my ingress:</p>
  
  <pre><code>kind: Ingress
  apiVersion: extensions/v1beta1
  metadata:
    name: sge-ingress
    namespace: sge
    annotations:
      kubernetes.io/ingress.class: traefik
  spec:
    rules:
    - host: sge-api.local
      http:
        paths:
        - backend:
           serviceName: sge-api-local
           servicePort: 8888
  </code></pre>
  
  <p>My service :</p>
  
  <pre><code>apiVersion: v1
  kind: Service
  metadata:
    labels:
      app: sge-api-local
    name: sge-api-local
    namespace: sge
  spec:
    ports:
    - name: "8888"
      port: 8888
      targetPort: 8888
    selector:
      app: sge-api-local
  </code></pre>
  
  <p>My deployment: </p>
  
  <pre><code>apiVersion: apps/v1
  kind: Deployment
  metadata:
    annotations:
      reloader.stakater.com/auto: "true"
    labels:
      app: sge-api-local
    name: sge-api-local
    namespace: sge
  spec:
    selector:
      matchLabels:
        app: sge-api-local
    replicas: 1
    strategy:
      type: Recreate
    template:
      metadata:
        labels:
          app: sge-api-local
      spec:
        containers:
        - image: sge_api:local
          name: sge-api-local
  </code></pre>
  
  <p>What should I do to debug this ?</p>