local internal_address=""
  [[ -n ${2:-} ]] && internal_address="${2}"

  write-master-env
  ensure-gci-metadata-files
  # shellcheck disable=SC2153 # 'MASTER_NAME' is assigned by upstream
  create-master-instance-internal "${MASTER_NAME}" "${address}" "${internal_address}"
}

function replicate-master-instance() {
  local existing_master_zone="${1}"
  local existing_master_name="${2}"

# Detect the IP for the master
#
# Assumed vars:
#   MASTER_NAME
#   ZONE
#   REGION
# Vars set:
#   KUBE_MASTER
#   KUBE_MASTER_IP
function detect-master() {
  detect-project
  KUBE_MASTER=${MASTER_NAME}
  echo "Trying to find master named '${MASTER_NAME}'" >&2
  if [[ -z "${KUBE_MASTER_IP-}" ]]; then
    local master_address_name="${MASTER_NAME}-ip"
    echo "Looking for address '${master_address_name}'" >&2

CONTAINER_REGISTRY="${CONTAINER_REGISTRY:-}"
PROJECT="${PROJECT:-}"

NUM_NODES="${NUM_NODES:-1}"

KUBELET_TEST_LOG_LEVEL="${KUBELET_TEST_LOG_LEVEL:-}"
KUBEPROXY_TEST_LOG_LEVEL="${KUBEPROXY_TEST_LOG_LEVEL:-}"

  # with auto-delete=no, so it should not be deleted.
  gcloud compute instances delete \
    --project "${PROJECT}" \
    --quiet \
    --zone "${ZONE}" \
    "${MASTER_NAME}"

  create-master-instance "${MASTER_NAME}-ip"
  wait-for-master
}

function upgrade-master-env() {
  echo "== Upgrading master environment variables. =="

      return
    fi
    master_names=( "${MASTER_NAME}" )
  fi

  if [[ "${#master_names[@]}" == 0 ]]; then
    echo 'No masters found?'
    return
  fi

  proc=${max_dump_processes}
  for master_name in "${master_names[@]}"; do
    master_dir="${report_dir}/${master_name}"
    mkdir -p "${master_dir}"
    save-logs "${master_name}" "${master_dir}" "${master_logfiles}" "" "true" &

fi
INSTANCE_PREFIX=${KUBE_GCE_INSTANCE_PREFIX:-e2e-test-${USER}}
CLUSTER_NAME=${CLUSTER_NAME:-${INSTANCE_PREFIX}}
MASTER_NAME="${INSTANCE_PREFIX}-master"
export AGGREGATOR_MASTER_NAME="${INSTANCE_PREFIX}-aggregator"
export INITIAL_ETCD_CLUSTER=${MASTER_NAME}
export MASTER_TAG="${INSTANCE_PREFIX}-master"
export NODE_TAG="${INSTANCE_PREFIX}-minion"

fi
INSTANCE_PREFIX="${KUBE_GCE_INSTANCE_PREFIX:-kubernetes}"
CLUSTER_NAME="${CLUSTER_NAME:-${INSTANCE_PREFIX}}"
MASTER_NAME="${INSTANCE_PREFIX}-master"
export AGGREGATOR_MASTER_NAME="${INSTANCE_PREFIX}-aggregator"
export INITIAL_ETCD_CLUSTER="${MASTER_NAME}"
export MASTER_TAG="${INSTANCE_PREFIX}-master"
export NODE_TAG="${INSTANCE_PREFIX}-minion"