Lab 3.5 I cannot access the nginx web page from outside

palao

Hello,
I have followed all the labs up to chapter 3 but I cannot complete Lab 3.5: the web page is not accessible from outside.
From my desktop I get this:

$ curl http://35.234.68.127:31412
curl: (56) Recv failure: Connection reset by peer

Of course, something similar happens with firefox.
31412 comes from kubectl get svc:

student@cp:~$ kubectl get svc
NAME         TYPE           CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE
kubernetes   ClusterIP      10.96.0.1       <none>        443/TCP        4d21h
nginx        LoadBalancer   10.109.20.101   <pending>     80:31412/TCP   21m

The external IP I got from ifconfig.io:

student@cp:~$ curl ifconfig.io
35.234.68.127

In the introduction of Lab 3.5 it is written:

You can access a Service from outside the cluster using a DNS add-on or environment variables. We will use environment variables to gain access to a Pod.

But I have not seen any step in the exercise to do that. Or it was not clear to me that I was doing it...

Any idea how to fix this?
TIA

PS in this post I have replaced my actual IP to avoid problems.

chrispokorni

Hi @palao,

Assuming your bootstrapping and configuration closely follows the lab guide, do you get a response when running curl from either the cp or the worker node, by targeting the Service Cluster IP?

curl 10.109.20.101

To get a better picture of your cluster's state, please provide the outputs of the following commands:

kubectl get nodes -o wide
kubectl get pods -A -o wide
kubectl describe svc nginx

What infrastructure is hosting your Kubernetes cluster? Are there any firewalls that may block ingress to your VMs? What is the guest OS running your VMs?

Regards,
-Chris

palao

Hello, @chrispokorni
That was it, the firewall!
Sorry, but I don't get used to that type of stupid blocks from our firewall...
Thank you for your help,

David