Quick and dirty setup remote access to kubernetes (k8s) cluster with kubectl

kubectl-copy-remote-config.sh

#!/bin/bash

# To rapidly setup remote access to a kubernetes cluster, dump the config from
# the master to the local system (e.g. your laptop or workstation)
#
#  ssh master kubectl config view --show-managed-fields=true --raw=true | \
#    sed "s/127.0.0.1/${CLUSTER}/g" > ~/.kube/config

# Tested against cluster created with k3s version v1.25.6+k3s1 (9176e03c)

if [ -z "$1" ]; then
  echo "usage: $(basename $0) cluster-fqdn" >&2
  exit 64
fi

CLUSTER="$1"
CONF=~/.kube/config

if [ -e "${CONF}" ]; then
  echo "ERROR: ${CONF} already exists!" >&2
  exit 1
fi

ssh "root@${CLUSTER}" kubectl config view --show-managed-fields=true --raw=true | \
  sed "s/127.0.0.1/${CLUSTER}/g" > "${CONF}"