How do I configure CoreDNS in Kubernetes?
An example of an AI chatbot conversation about configuring CoreDNS in Kubernetes.
How do I configure CoreDNS in Kubernetes?
To configure CoreDNS in Kubernetes, you need to edit the CoreDNS ConfigMap. You can do this by running kubectl edit configmap coredns -n kube-system.
What should I add to the ConfigMap?
You can add custom DNS entries or modify the existing ones. For example, to add a new zone, you can include a line like example.com:53 { ... }.
How do I check if CoreDNS is working after the configuration?
You can check the logs of the CoreDNS pods using kubectl logs -n kube-system -l k8s-app=kube-dns to see if there are any errors.
Is there a way to test DNS resolution in my cluster?
Yes, you can use the nslookup command from a pod in your cluster to test DNS resolution. For example, kubectl run -it --rm --restart=Never dnsutils --image=tutum/dnsutils -- nslookup example.com.
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