Initial implementation of kube-dump.sh - script which dumps state of Kubernetes cluster for debugging. Tested on GCE only. This is initial attempt to fix #3500.

hack/kube-dump.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+# Copyright 2015 Google Inc. 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.
+
+# This script dumps debugging state of currently running Kubernetes cluster.
+
+KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
+
+echo "kube-dump.sh: Getting version..."
+"${KUBE_ROOT}/cluster/kubectl.sh" version
+echo
+
+echo "kube-dump.sh: Getting resources..."
+"${KUBE_ROOT}/cluster/kubectl.sh" get nodes,pods,rc,services,events -o json
+echo
+
+source "${KUBE_ROOT}/cluster/kube-env.sh"
+source "${KUBE_ROOT}/cluster/${KUBERNETES_PROVIDER}/util.sh"
+
+detect-project &> /dev/null
+
+echo "kube-dump.sh: Getting docker statuses on all nodes..."
+ALL_NODES=(${MINION_NAMES[*]} ${MASTER_NAME})
+for NODE in ${ALL_NODES[*]}; do 
+  echo "kube-dump.sh: Node $NODE:"
+  ssh-to-node "${NODE}" '
+    sudo docker ps -a
+    sudo docker images
+  '
+done
+echo
+
+echo "kube-dump.sh: Getting boundpods from etcd..."
+ssh-to-node "${MASTER_NAME}" '
+  ETCD_SERVER=$(hostname -i):4001 
+  for DIR in $(etcdctl -C $ETCD_SERVER ls /registry/nodes); do 
+    echo "kube-dump.sh: Dir $DIR:"
+    etcdctl -C $ETCD_SERVER get $DIR/boundpods
+  done 
+'