Exercise - Attach a Managed Data Disk to a Azure VM

az group create --name testresource -l westus2

# Create VM
az vm create \
  --resource-group testresource \
  --name support-web-vm01 \
  --image Canonical:0001-com-ubuntu-server-focal:20_04-lts:latest \
  --size Standard_DS1_v2 \
  --admin-username azureuser \
  --generate-ssh-keys

{
  "fqdns": "",
  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/680469d8-edB7-42ec-b118-cd80d51741e7/providers/Microsoft.Compute/virtualMachines/support-web-vm01",
  "location": "eastus",
  "macAddress": "00-0D-3A-10-63-0A",
  "powerState": "VM running",
  "privateIpAddress": "10.0.0.4",
  "publicIpAddress": "104.211.38.211",
  "resourceGroup": "680469d8-edB7-42ec-b118-cd80d51741e7",
  "zones": ""
}

ipaddress=$(az vm show --resource-group testresource --name support-web-vm01 --show-details --query publicIps --output tsv)

ssh azureuser@$ipaddress

NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sdb      8:16   0   14G  0 disk 
└─sdb1   8:17   0   14G  0 part /mnt
sr0     11:0    1  628K  0 rom  
sdc      8:32   0   64G  0 disk 
sda      8:0    0   30G  0 disk 
└─sda1   8:1    0   30G  0 part /

sudo apt update
sudo apt install parted

#!/bin/bash

# Partition the drive /dev/sdc.
# Read from standard input provide the options we want.
#  n adds a new partition.
#  p specifies the primary partition type.
#  the following blank line accepts the default partition number.
#  the following blank line accepts the default start sector.
#  the following blank line accepts the default final sector.
#  p prints the partition table.
#  w writes the changes and exits.
sudo fdisk /dev/sdc <<EOF
n
p



p
w
EOF

# Write a file system to the partition.
#  ext4 creates an ext4 filesystem.
#  /dev/sdc1 is the device name.
sudo mkfs -t ext4 /dev/sdc1

# Create the /uploads directory, which we'll use as our mount point.
sudo mkdir /uploads

# Attach the disk to the mount point.
sudo mount /dev/sdc1 /uploads

# Get the UUID of the new drive, /dev/sdc1, and save it as a variable.
UUID=$(sudo -i blkid | grep '/dev/sdc1' | perl -pe 's/.+([a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}).+/$1/')

# Add the UUID to /etc/fstab so that the drive is mounted automatically after reboot.
# We use the UUID instead of the device name (/dev/sdc1) because the UUID avoids the incorrect 
# disk from being mounted if the OS detects a disk error during boot.
echo "UUID=${UUID}    /uploads    ext4    defaults,nofail    1    2" | sudo tee --append /etc/fstab

# Refresh the mount points.
sudo mount -a

chmod +x add-data-disk.sh
./add-data-disk.sh

$ lsblk
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sdb      8:16   0   14G  0 disk 
└─sdb1   8:17   0   14G  0 part /mnt
sr0     11:0    1  628K  0 rom  
sdc      8:32   0   64G  0 disk 
└─sdc1   8:33   0   64G  0 part /uploads
sda      8:0    0   30G  0 disk 
└─sda1   8:1    0   30G  0 part /