Connect to rancher and get all your kubeconfigs into a single config file. This will save your docker-desktop, rancher-desktop and rancher (if any exist) configurations. This will cleanup your api keys in rancher as well.

kubeconfig.sh

#!/bin/bash

CURRENT=$(kubectl config current-context)

USERTOKEN="supersecretapitoken"
RANCHERENDPOINT=https://gonzo-rancher.ncsa.illinois.edu/v3
CLUSTERS=$(curl -s -u $USERTOKEN $RANCHERENDPOINT/clusters -H 'content-type: application/json' | jq -c '.data[] | {"name":.name, "id": .id}' | sort)

# cleanup
rm -f kubeconfig
touch kubeconfig

# remove old tokens
for token in $(curl -s -u "${USERTOKEN}" ${RANCHERENDPOINT}/tokens | jq -r '.data[] | select (.description == "Kubeconfig token").id'); do
  curl -s -X DELETE -u "${USERTOKEN}" ${RANCHERENDPOINT}/tokens/${token}
done

# save special clusters
for CLUSTERID in rancher rancher-desktop docker-desktop; do
  kubectl config use-context ${CLUSTERID} 2>/dev/null && (
    echo "Getting config for ${CLUSTERID}"
    kubectl config view --minify --raw > ${CLUSTERID}.kubeconfig
    mv kubeconfig kubeconfig.old
    export KUBECONFIG=kubeconfig.old:${CLUSTERID}.kubeconfig
    kubectl config view --flatten --merge > kubeconfig
    rm ${CLUSTERID}.kubeconfig kubeconfig.old
  )
done

# get all clusters from rancher
for ROW in $CLUSTERS; do
  CLUSTERID=$(echo $ROW | jq -r .id)
  CLUSTERNAME=$(echo $ROW | jq -r .name)
  echo "Getting config for ${CLUSTERID} : ${CLUSTERNAME}"
  curl -s -u $USERTOKEN $RANCHERENDPOINT/clusters/$CLUSTERID?action=generateKubeconfig -X POST -H 'content-type: application/json' | jq -r .config > ${CLUSTERID}.kubeconfig
  mv kubeconfig kubeconfig.old
  export KUBECONFIG=kubeconfig.old:${CLUSTERID}.kubeconfig
  kubectl config view --flatten --merge > kubeconfig
  rm ${CLUSTERID}.kubeconfig kubeconfig.old
done
mv kubeconfig ~/.kube/config
chmod 600 ~/.kube/config

unset KUBECONFIG
kubectl config use-context ${CURRENT}