If you want to merge a new kubeconfig into your existing one, right?

Here’s the clean way:

✅ If you just have a new kubeconfig.yaml file and you want to add it to your current setup:

KUBECONFIG=~/.kube/config:/path/to/new/kubeconfig.yaml kubectl config view --flatten > /tmp/config && mv /tmp/config ~/.kube/config

What’s happening here:

  • KUBECONFIG=a:b → temporarily tell kubectl to load both configs (a and b).
  • kubectl config view --flatten → merges them properly into one clean config.
  • Save that result over your current ~/.kube/config.

✅ Alternative (using kubectl config command) if you just want to manually add a new cluster, user, and context:

kubectl config set-cluster <cluster-name> --server=<server-url> --certificate-authority=<path-to-ca-cert>
kubectl config set-credentials <user-name> --token=<token>
kubectl config set-context <context-name> --cluster=<cluster-name> --user=<user-name>
kubectl config use-context <context-name>

(But the first way is easier if you already have a ready kubeconfig file.)

Quick Tip:
If you work with multiple clusters a lot, tools like kubectx make switching between them super easy 🚀.