Remove the unused health-monitor.sh.

Signed-off-by: Lantao Liu <lantaol@google.com>

cluster/health-monitor.sh

@@ -1,55 +0,0 @@
-#!/bin/bash
-
-# Copyright 2017 The Kubernetes Authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-set -o nounset
-set -o pipefail
-
-# TODO(#780): This file is not used by kube-up.sh on
-# GCE anymore. We'll get rid of this file in 1.12 release.
-# Please stop relying on this script if you are.
-
-# CRICTL is the path of crictl
-CRICTL=${CRICTL:-"crictl"}
-# INITIAL_WAIT_ATTEMPTS is the number to attempt, before start
-# performing health check. The problem is that containerd is
-# started around the same time with health monitor, it may
-# not be ready yet when health-monitor is started.
-INITIAL_WAIT_ATTEMPTS=${INITIAL_WAIT_ATTEMPTS:-5}
-# COMMAND_TIMEOUT is the timeout for the health check command.
-COMMAND_TIMEOUT=${COMMAND_TIMEOUT:-60}
-# CHECK_PERIOD is the health check period.
-CHECK_PERIOD=${CHECK_PERIOD:-10}
-# SLEEP_SECONDS is the time to sleep after killing containerd.
-SLEEP_SECONDS=${SLEEP_SECONDS:-120}
-
-attempt=1
-until timeout ${COMMAND_TIMEOUT} ${CRICTL} pods > /dev/null || (( attempt == INITIAL_WAIT_ATTEMPTS ))
-do
-  echo "$attempt initial attempt \"$CRICTL pods\"! Trying again in $attempt seconds..."
-  sleep $(( attempt++ ))
-done
-
-echo "Start performing health check."
-while true; do
-  if ! timeout ${COMMAND_TIMEOUT} ${CRICTL} pods > /dev/null; then
-    echo "\"$CRICTL pods\" failed!"
-    pkill -x containerd
-    # Wait for a while, as we don't want to kill it again before it is really up.
-    sleep ${SLEEP_SECONDS}
-  else
-    sleep ${CHECK_PERIOD}
-  fi
-done