run kube-proxy in a static pod

cluster/saltbase/salt/kube-node-unpacker/kube-node-unpacker.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+# Copyright 2015 The Kubernetes Authors All rights reserved.
+#
+# 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.
+
+# loadedImageFlags is a bit-flag to track which docker images loaded successfully.
+let loadedImageFlags=0
+
+while true; do
+  restart_docker=false
+
+  if which docker 1>/dev/null 2>&1; then
+
+    timeout 30 docker load -i /srv/salt/kube-bins/kube-proxy.tar 1>/dev/null 2>&1
+    rc=$?
+    if [[ "${rc}" == 0 ]]; then
+      let loadedImageFlags="${loadedImageFlags}|1"
+    elif [[ "${rc}" == 124 ]]; then
+      restart_docker=true
+    fi
+  fi
+
+  # required docker images got installed. exit while loop.
+  if [[ "${loadedImageFlags}" == 1 ]]; then break; fi
+
+  # Sometimes docker load hang, restart docker daemon resolve the issue
+  if [[ "${restart_docker}" ]]; then service docker restart; fi
+
+  # sleep for 15 seconds before attempting to load docker images again
+  sleep 15
+
+done
+
+# Now exit. After kube-push, salt will notice that the service is down and it
+# will start it and new docker images will be loaded.