Raspberry PI External SSD Scripts

configure-docker-drives.sh

#!/bin/bash

# create the docker data drive
mkdir /mnt/docker-base

# allow the root service account, which docker runs as, to own this directory and have write permissions
chown -R root:root /mnt/docker-base
chmod 701 /mnt/docker-base

# create a `daemon.json` file for the docker runtime
touch /etc/docker/daemon.json

# Define the JSON data
json_data='{
  "data-root": "/mnt/docker-base"
}'

# Define the target file
target_file="/etc/docker/daemon.json"

# Create the target file and write the JSON data to it
echo "$json_data" | sudo tee "$target_file" > /dev/null

# Restart Docker
service docker restart

configure-microk8s.sh

#!/bin/bash

# mirror the containerd storage paths, assuming these don't exist already
mkdir /mnt/var
mkdir /mnt/var/lib
mkdir /mnt/var/lib/containerd
mkdir /mnt/run
mkdir /mnt/run/containerd

# next, we have to configure microk8s to use these new directories instead of the default ones

# Define the configuration file path
CONFIG_FILE="/var/snap/microk8s/current/args/containerd"

# Backup the original configuration file
cp "$CONFIG_FILE" "${CONFIG_FILE}.bak"

# Replace the root and state paths using sed
sed -i 's|--root ${SNAP_COMMON}/var/lib/containerd|--root /mnt/var/lib/containerd|' "$CONFIG_FILE"
sed -i 's|--state ${SNAP_COMMON}/run/containerd|--state /mnt/run/containerd|' "$CONFIG_FILE"

# Confirm the changes
echo "Configuration file updated. Changes:"
diff "${CONFIG_FILE}.bak" "$CONFIG_FILE"

setup-drives.sh

#!/bin/bash

# Backup your data before running this script!

# Unmount the partitions
umount /dev/sda1
umount /dev/sda2

# Use parted to re-create the partition with proper alignment
parted /dev/sda --script mklabel gpt
parted /dev/sda --script mkpart primary ext4 0% 100%
parted /dev/sda --script align-check optimal 1

# Format the new partition as EXT4
mkfs.ext4 /dev/sda1

# Mount the new partition
mount /dev/sda1 /mnt

# Optionally, update /etc/fstab
echo "/dev/sda1  /mnt  ext4  defaults  0  2" >> /etc/fstab

# Set write permissions on the new mount
chmod 775 /mnt

Important

umount /dev/sda1 and umount /dev/sda2 are necessary because the Crucial SSDs we use ship with two NTFS partitions out of the box. This allows me to condense both of them into a single ext4 partition. Please check what the status of your drives looks like using sudo fdisk -l before executing these scripts and BACK UP ANY DATA YOU HAVE on these drives before running this.