AWS勉強会

#!/bin/bash

# Specify the desired volume size in GiB as a command-line argument. If not specified, default to 20 GiB.

SIZE=${1:-20}

# Get the ID of the environment host Amazon EC2 instance.

INSTANCEID=$(curl 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)

# 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