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Lab 3.4: Can't reach to ClusterIP and Endpoint with curl from master to worker node


In Exercise 3.4 Step 19-20, the document instruct me to run a nginx on worker node and then
curl $clusterIP:80
curl $endpoint
on MASTER node, with tcpdump tunl0 on worker.
In my lab on GCP, I can get nginx default page with curl on WORKER node for both addresses. However if I run curl on master node, it doesn't return (waiting timeout). The odd thing is that tcpdump on worker node print nothing.
kubectl works fine to get/create/delete/describe objects on the cluster, for both of nodes.
Any suggestions to troubleshoot?

Best Answer


  • cumulus

    I'm surprised at my blindness on the text marked as "Very important".
    Thanks Chris.


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