Resize script for Cloud9 based workshops.

resize.sh

#!/bin/bash

# Specify the desired volume size in GiB as a command line argument. If not specified, default to 20 GiB.
SIZE=${1:-40}

# Get the ID of the environment host Amazon EC2 instance.
INSTANCEID=$(curl http://169.254.169.254/latest/meta-data/instance-id)
REGION=$(curl -s http://169.254.169.254/latest/meta-data/placement/availability-zone | sed 's/\(.*\)[a-z]/\1/')

# Get the ID of the Amazon EBS volume associated with the instance.
VOLUMEID=$(aws ec2 describe-instances \
	  --instance-id $INSTANCEID \
	    --query "Reservations[0].Instances[0].BlockDeviceMappings[0].Ebs.VolumeId" \
	      --output text \
	        --region $REGION)

# Resize the EBS volume.
aws ec2 modify-volume --volume-id $VOLUMEID --size $SIZE

# Wait for the resize to finish.
while [ \
	  "$(aws ec2 describe-volumes-modifications \
	      --volume-id $VOLUMEID \
	          --filters Name=modification-state,Values="optimizing","completed" \
		      --query "length(VolumesModifications)"\
		          --output text)" != "1" ]; do
sleep 1
done

#Check if we're on an NVMe filesystem
if [[ -e "/dev/xvda" && $(readlink -f /dev/xvda) = "/dev/xvda" ]]
then
	  # Rewrite the partition table so that the partition takes up all the space that it can.
	    sudo growpart /dev/xvda 1

	      # Expand the size of the file system.
	        # Check if we're on AL2
		  STR=$(cat /etc/os-release)
		    SUB="VERSION_ID=\"2\""
		      if [[ "$STR" == *"$SUB"* ]]
			        then
					    sudo xfs_growfs -d /
					      else
						          sudo resize2fs /dev/xvda1
							    fi

						    else
							      # Rewrite the partition table so that the partition takes up all the space that it can.
							        sudo growpart /dev/nvme0n1 1

								  # Expand the size of the file system.
								    # Check if we're on AL2
								      STR=$(cat /etc/os-release)
								        SUB="VERSION_ID=\"2\""
									  if [[ "$STR" == *"$SUB"* ]]
										    then
											        sudo xfs_growfs -d /
												  else
													      sudo resize2fs /dev/nvme0n1p1
													        fi
fi