instance_init.sh

#!/bin/sh
# The current Google container-optimized image starts Docker before this startup
# script gets a chance to run, so our mounts may not be set, etc.
# Kill the docker agent and containers that have started already.
ps -u root -o pid,cmd | grep docker-agent | perl -pe 's/\s*(\d+).*/$1/' | xargs -I {} kill -9 {};
docker ps -q | xargs -I {} docker rm -f {};
# Mount the MongoDB disk, which should have been attached by the instance create command
mkdir /mnt/pd1
mount -t ext4 /dev/disk/by-id/google-mongodb-data-1 /mnt/pd1
# Ensure MongoDB has somewhere to write its data, even if the disk is empty
mkdir -p /mnt/pd1/mongodb/data/db
# Replace the docker-agent with our enhanced version that can use host dirs for volumes
git clone https://github.com/gear11/container-agent.git
chmod +x container-agent/container_agent/run_containers.py
rm /usr/bin/docker-agent
ln -s /container-agent/container_agent/run_containers.py /usr/bin/docker-agent
# Install the mongodb client on the host, so we can connect to MongoDB in the container once up and running.
# See: http://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/
apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10
echo 'deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen' | sudo tee /etc/apt/sources.list.d/mongodb.list
apt-get update
apt-get install mongodb-org-shell
# Start the docker agent
service docker-gce-agent start