Comments (13)
I am assuming this is a tcp vs udp problem.
- changed the configmap to use a pod ip, which allows for udp.
- login to the dig pod in west
- dig us-east-1-cluster.local - succeeds
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/sig aws
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@cmluciano: These labels do not exist in this repository: sig/aws
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In response to this:
/sig aws
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Any ideas on this @justinsb
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Do normal resolvers try TCP if UDP fails? I know the truncation code path tries TCP if the reply is too big, but not sure what happens when there is no reply at all...
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@cmluciano I am one of the sig-aws maintainers btw :)
@bowei it is not working with the ELB that is TCP only. So I would say no
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@bowei to add a bit more clarity.
- ELB in place with TCP only
- Outside client executing a dig command setting dig to work only with TCP.
- Dig command fails
From this workflow, I would say that the DNS pod is not working on the ELB. I am able to use the pod locally fine. Any ideas on debugging?
If the client communicated with the DNS internal cluster IP address it works fine, but the IP pod ip address is not guaranteed, so I need an external ELB service.
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/lifecycle stale
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/lifecycle frozen
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You can try using nodelocaldns, which connects to upstream servers via TCP by design. It now supports stubDomains configured in kube-dns configmap. Updated image - k8s.gcr.io/k8s-dns-node-cache:1.15.6
You can use a yaml similar to https://github.com/kubernetes/kubernetes/pull/82845/files, you don't need all those changes. Just the part that mounts the kube-dns configmap.
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/assign @chrislovecnm
anything more needed here?
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I have not tested this @prameshj or touched this in a while. I would say close it unless someone wants to recreate it
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/close
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