A few tips and tricks I’ve come across. Starting off small!
Say you have a whole bunch of clusters set in your kubeconfig file and you want to extract one. Just one.
Set your config to that cluster (maybe use kubectx) and do:
kubectl config view --minify --raw > cluster.kubeconfig
Boom!
Copy your backup, set an env var pointing to the backup config and the new standalone file, and use config view with the flatten option to produce a new, merged, config file, and finally copy that file back to ~/.kube/config.
$ cp ~/.kube/config ./config-backup
$ KUBECONFIG=./config-backup:./new-standalone.kubeconfig kubectl config view --flatten > new-kube-config
$ cp new-kube-config ~/.kube/config
See the shell operator. Good times!
See this k8s doc
kubectl apply -f https://k8s.io/examples/admin/dns/dnsutils.yaml
Make sure you are in the default namespace.
Run a dig command from the pod.
$ kubectl exec -i -t dnsutils -- dig +short google.com
172.217.165.14