examples/vitess: Update for Vitess v2.0.0-alpha5

This also enables built-in backup, so the caveat about starting new pods
no longer applies.

examples/vitess/configure.sh

@@ -0,0 +1,73 @@
+#!/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.
+
+# This script generates config.sh, which is a site-local config file that is not
+# checked into source control.
+
+# Select and configure Backup Storage Implementation.
+storage=gcs
+read -p "Backup Storage (file, gcs) [gcs]: "
+if [ -n "$REPLY" ]; then storage="$REPLY"; fi
+
+case "$storage" in
+gcs)
+  # Google Cloud Storage
+  project=$(gcloud config list project | grep 'project\s*=' | sed -r 's/^.*=\s*(.*)$/\1/')
+  read -p "Google Developers Console Project [$project]: "
+  if [ -n "$REPLY" ]; then project="$REPLY"; fi
+  if [ -z "$project" ]; then
+    echo "ERROR: Project name must not be empty."
+    exit 1
+  fi
+
+  read -p "Google Cloud Storage bucket for Vitess backups: " bucket
+  if [ -z "$bucket" ]; then
+    echo "ERROR: Bucket name must not be empty."
+    exit 1
+  fi
+  echo
+  echo "NOTE: If you haven't already created this bucket, you can do so by running:"
+  echo "      gsutil mb gs://$bucket"
+  echo
+
+  backup_flags=$(echo -backup_storage_implementation gcs \
+                      -gcs_backup_storage_project "'$project'" \
+                      -gcs_backup_storage_bucket "'$bucket'")
+  ;;
+file)
+  # Mounted volume (e.g. NFS)
+  read -p "Root directory for backups (usually an NFS mount): " file_root
+  if [ -z "$file_root" ]; then
+    echo "ERROR: Root directory must not be empty."
+    exit 1
+  fi
+  echo
+  echo "NOTE: You must add your NFS mount to the vtctld-controller-template"
+  echo "      and vttablet-pod-template as described in the Kubernetes docs:"
+  echo "      http://kubernetes.io/v1.0/docs/user-guide/volumes.html#nfs"
+  echo
+
+  backup_flags=$(echo -backup_storage_implementation file \
+                      -file_backup_storage_root "'$file_root'")
+  ;;
+*)
+  echo "ERROR: Unsupported backup storage implementation: $storage"
+  exit 1
+esac
+
+echo "Saving config.sh..."
+echo "backup_flags=\"$backup_flags\"" > config.sh
+