A guide to increasing your AWS EC2 instance storage with no downtime.

Check current usage

df -h

Filesystem      Size  Used Avail Use% Mounted on
/dev/root       194G  167G   27G  87% /
...

Check current partition

lsblk

NAME     MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
xvda     202:0    0   200G  0 disk 
├─xvda1  202:1    0 199.9G  0 part /
...

Log into https://aws.amazon.com/ dashboard console, locate your EBS volume associated to the EC2 instance. Under Actions → Modify volume. Input your desired new volume under Size (GiB), click Modify.

Back to the terminal, check system partitions again, the disk should reflect the new storage size.

lsblk

NAME     MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
xvda     202:0    0   300G  0 disk 
├─xvda1  202:1    0 199.9G  0 part /
...

Allocate the disk space to partition

# We'll allocate to the 1st partition, which is xvda1 shown above
sudo growpart /dev/xvda 1

CHANGED: partition=1 start=227328 old: size=419203039 end=419430367 new: size=628918239 end=629145567

Then expand the file system

sudo resize2fs /dev/xvda1

resize2fs 1.46.5 (30-Dec-2021)
Filesystem at /dev/xvda1 is mounted on /; on-line resizing required
old_desc_blocks = 25, new_desc_blocks = 38
The filesystem on /dev/xvda1 is now 78614779 (4k) blocks long.

Double checking