swarm-resize.sh

# 	Copyright 2016, Google, Inc.
#  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.

# get cluster info from options.yaml
PREFIX=$(awk '{for(i=1;i<=NF;i++) if ($i=="prefix:") print $(i+1)}' options.yaml)
ZONE=$(awk '{for(i=1;i<=NF;i++) if ($i=="zone:") print $(i+1)}' options.yaml)
PROJECT_ID=$(gcloud config list project | awk 'FNR ==2 { print $3 }')

echo "Resizing Swarm Deplyoment"

gcloud compute instance-groups managed resize $PREFIX-igm --size $1 --zone $ZONE

echo "Cluster Resized - please wait a minute for new nodes to register or delete"