Kubernetes coredns not working for external address

July 26, 2019 295 views
DigitalOcean Kubernetes
vitorlavor
By:
vitorlavor

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.

2 comments
  • jkwiatkoski July 26, 2019

    Hi there!

    Do you see any logs in the coredns pods or any restarts on the coredns pods themselves?

    Regards,

    John Kwiatkoski
    Senior Developer Support Engineer

  • vitorlavor July 26, 2019

    Nope. Coredns logs are ok:
    2019-07-26T19:53:18.670Z [INFO] CoreDNS-1.3.1
    2019-07-26T19:53:18.670Z [INFO] linux/amd64, go1.11.4, 6b56a9c
    CoreDNS-1.3.1
    linux/amd64, go1.11.4, 6b56a9c
    2019-07-26T19:53:18.670Z [INFO] plugin/reload: Running configuration MD5 =

    and 0 restarts.

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1 Answer
MilesWeb July 30, 2019

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.

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