Rewrite your Windows .kube/config to be usable by Linux kubectl inside WSL

script.sh

#!/bin/bash

win_profile_dir=$(wslpath "$(cmd.exe /c "echo %USERPROFILE%" | tr -d '\r')")

win_dot_kube_dir="${win_profile_dir}/.kube"

win_kube_config="${win_dot_kube_dir}/config"

wsl_dot_kube_dir="${HOME}/.kube"

mkdir -p "${wsl_dot_kube_dir}"

wsl_kube_config="${wsl_dot_kube_dir}/config"

embed=0
if [ "$1" = '--embed' ]
then
  embed=1
fi

inline () {
  local line="$1" key value wsl_file
  IFS=: read -r key value <<<"${line}"
  value="${value# }"
  wsl_file=$(wslpath "${value}")
  if [ -n "${wsl_file}" ] && [ -s "${wsl_file}" ]
  then
    value="${wsl_file}"
    if [ "${embed}" -eq 1 ]
    then
      value=$(base64 -w0 <"${wsl_file}")
      key="${key}-data"
    fi
  fi
  printf '%s: %s\n' "${key}" "${value}"
}

while IFS= read -r line
do
  case "${line}" in
    *' certificate-authority:'*|*' client-certificate:'*|*' client-key:'*)
      inline "${line}"
      ;;
    *)
      printf '%s\n' "${line}"
      ;;
  esac
done <"${win_kube_config}" >"${wsl_kube_config}"