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@mrichman
Created May 28, 2021 18:49
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Resize EC2 volume
#!/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
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