'Some pod to pod connection fails on EKS
We have a cluster on EKS and from 2 days ago we noticed some network issues in our cluster. Imagine a scenario in which we have 2 workers nodes (w1 and w2) and 3 pods with their own services (A, B and C). Pods A and B are located on w1 and pod C are located on w2.
The problem is A cannot reach C but B can. When I go inside pod A and try curl -vvv http://C/ the DNS resolves to the IP of the service of the C but after that it hangs and after some time I get a timeout. The strange thing is restarting/deleting pod A didn't solve the issue but when I deleted C it solved the issue.
I have never seen something like this and I checked the logs of the kube-proxy of the worker nodes but I didn't see an error or anything strange. Does someone have any idea what is going on here?
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