Ubuntu Google Cloud Platform server - mount new disk, install docker and docker compose and change docker disk to new location. CAUTION: Only tested on a fresh server!!

run.sh

#!/bin/bash

set -e

DISK="$1"
MOUNTPOINT="$2"

if [ -z "$DISK" ] || [ -z "$MOUNTPOINT" ]; then
  echo "Usage: run.sh DISK MOUNTPOINT"
  exit 1
fi


echo "Found disk '$DISK', mounting it to $MOUNTPOINT. Is it correct? Stop script in 20s if not (Ctrl^C) "
( set -x; sleep 20 )

echo "Creating new partition and mouting it to $MOUNTPOINT..."
mkfs.ext4 -m 0 -F -E lazy_itable_init=0,lazy_journal_init=0,discard /dev/$DISK

echo "Creating mount directory"
mkdir -p $MOUNTPOINT

echo "Mounting disk"
mount -o discard,defaults /dev/$DISK $MOUNTPOINT

chmod a+w $MOUNTPOINT

echo "Editing fstab file"
cp /etc/fstab /etc/fstab.backup
echo UUID=$(blkid -s UUID -o value /dev/$DISK) $MOUNTPOINT ext4 discard,defaults,nofail 0 2 | sudo tee -a /etc/fstab

echo "Installing Docker"
wget -qO- https://get.docker.com/ | sh

# Install docker-compose
COMPOSE_VERSION=`git ls-remote https://github.com/docker/compose | grep refs/tags | grep -oP "[0-9]+\.[0-9][0-9]+\.[0-9]+$" | tail -n 1`
sh -c "curl -L https://github.com/docker/compose/releases/download/${COMPOSE_VERSION}/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose"
chmod +x /usr/local/bin/docker-compose
sh -c "curl -L https://raw.githubusercontent.com/docker/compose/${COMPOSE_VERSION}/contrib/completion/bash/docker-compose > /etc/bash_completion.d/docker-compose"

sed -i "s#ExecStart=\(.*\)#ExecStart=\1 -g $MOUNTPOINT\/docker #g" /lib/systemd/system/docker.service
systemctl daemon-reload

service docker stop

echo "Waiting 20s for docker to stop..."
sleep 20

echo "Moving old directory to a new location..."
mv /var/lib/docker $MOUNTPOINT/docker

echo "Starting docker"
service docker start

echo "Done."

usage.sh

# example usage
wget https://gist.githubusercontent.com/Valian/910b29ba815dcfd78c20451bacf8479f/raw/c83d3b781617ea1d263724b87be06ea60a6f9f7f/run.sh

sudo run.sh sdb /hdd