Question

Kubernetes coredns not working for external address

Im using Digital Ocean kubernetes. My pod stops resolving external address. for the kubernetes names, everything is ok.

If I reboot the kubernetes nodes, its works, bbut for a short period of time.

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I am running into the same issue on DOKS. What version did you upgrade/downgrade to?

Not sure of the information about your upgrade, the issue seems to be due to kube-dns version resolving external name services. You have to roll back kube-dns to a previous build or upgrade to.

OR try to check if your kube-dns version changed whenever you upgraded your OS.