DNS fail: Pods append local domain to DNS queries

Rancher
1

Hi,

I have installed a k3s cluster and then rancher to manage it.
Been trying to establish a minecraft server just for testing, but pods keep restarting.
When i enter the pods shell and try to ping for example google.com it looks like this:

PING google.com.local.btveien.net (81.166.168.170) 56(84) bytes of data.

If I create the deployment, choose Networking and set DNS Policy to None and set a nameserver, the resolution works just fine.

I also noticed that alpine and busybox keeps looping in “CrashLoopBackOff” if I create then via the Rancher UI.
If i run kubectl run -it busybox --image=busybox from CLI then the pod is created and dns resolution works.

I’m not an expert on rancher or kubernetes, just trying to set it up so I can learn.
But, i can’t figure this out.

1 Like
2

Try leaving dnspolicy at default and using ndots to control how domains are handled

dnsConfig:
  options:
    - name: ndots
      value: "1"

That worked for me.