kubernetes - Why does Ingress fail when LoadBalancer works on GKE? -


i can't ingress work on gke, owing health check failures. i've tried of debugging steps can think of, including:

  • verified i'm not running low on quotas
  • verified service accessible within cluster
  • verified service works behind k8s/gke load balancer.
  • verified healthz checks passing in stackdriver logs

... i'd love advice how debug or fix. details below!

i have set service type loadbalancer on gke. works great via external ip:

apiversion: v1 kind: service metadata:   name: echoserver   namespace: es spec:   ports:   - port: 80     targetport: 8080     protocol: tcp   type: loadbalancer   selector:     app: echoserver

then try setting ingress on top of same service:

apiversion: extensions/v1beta1 kind: ingress metadata:   name: echoserver-ingress   namespace: es   annotations:     kubernetes.io/ingress.class: "gce"     kubernetes.io/ingress.global-static-ip-name: "echoserver-global-ip" spec:   backend:     servicename: echoserver     serviceport: 80

the ingress gets created, thinks backend nodes unhealthy:

$ kubectl --namespace es describe ingress echoserver-ingress | grep backends   backends:     {"k8s-be-31102--<snipped>":"unhealthy"}

inspecting state of ingress backend in gke web console, see same thing:

0 of 3 healthy

the health check details appear expected:

health check details

... , within pod in cluster can call service successfully:

# curl  -vvv echoserver  2>&1 | grep "< http" < http/1.0 200 ok  # curl  -vvv echoserver/healthz  2>&1 | grep "< http" < http/1.0 200 ok

and can address service nodeport:

# curl  -vvv 10.0.1.1:31102  2>&1 | grep "< http"  < http/1.0 200 ok

(which goes without saying, because load balancer service set in step 1 resulted in web site that's working fine.)

i see healthz checks passing in stackdriver logs:

enter image description here

regarding quotas, check , see i'm using 3 of 30 backend services:

$ gcloud compute project-info describe | grep -a 1 -b 1  backend_services - limit: 30.0   metric: backend_services   usage: 3.0

you have configured timeout value 1 second. perhaps increasing 5 seconds solve issue.


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