cloud9-resize.sh

#!/bin/bash
# Specify the desired volume size in GiB as a command line argument. If not specified, default to 50 GiB.
SIZE=${1:-50}
# Get the ID of the environment host Amazon EC2 instance.
INSTANCEID=$(curl --silent http://169.254.169.254/latest/meta-data/instance-id)
# Get the ID of the Amazon EBS volume associated with the instance.
VOLUMEID=$(aws ec2 describe-instances \
  --instance-id $INSTANCEID \
  --query "Reservations[0].Instances[0].BlockDeviceMappings[0].Ebs.VolumeId" \
  --output text)
# Check the size for idempodent 
CURRENT_VOLSIZE=$(aws ec2 describe-volumes --volume-ids $VOLUMEID --query "Volumes[0].Size") 
if [[ "$SIZE" == "$CURRENT_VOLSIZE" ]] 
then
  echo "Skipping: Volume resize already done previously or volumes are the same as $SIZE GB"
else
  # 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 [ $(readlink -f /dev/xvda) = "/dev/xvda" ]
  then
    # Rewrite the partition table so that the partition takes up all the space that it can.
    sudo growpart /dev/xvda 1
    # Expand the size of the file system.
    # Check if we are on AL2
    STR=$(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
fi