#!/bin/bash

HOST_IP=$(ip addr show eth0 | grep -Po 'inet \K[\d.]+')

kubectl config view --raw --minify --flatten --output='jsonpath={.clusters[].cluster.certificate-authority-data}' | base64 --decode > ca.crt

vault write auth/kubernetes/config \
    kubernetes_host=https://${HOST_IP}:6443 \
    kubernetes_ca_cert=@ca.crt

rm ca.crt