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Creating a New Encrypted Volume Using LUKS

In this hands-on lab, we will use Linux Unified Key Setup (LUKS) to encrypt a volume on a Red Hat host. Then we'll go through the process of unmounting and closing the volume and re-opening and re-mounting the volume, which is standard practice for encrypted volumes not mounted at boot. *This course is not approved or sponsored by Red Hat.*

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Path Info

Clock icon Intermediate
Clock icon 30m
Clock icon May 17, 2019

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Table of Contents

  1. Challenge

    Create a New Logical Volume

    1. Run the vgs command to view a list of available volume groups.
    2. Next, run lvcreate -L 100M -n patient_lv luks_vg to create a new logical volume.
    3. Run the lvs command to verify that the new logical volume was created.
  2. Challenge

    Encrypt the Volume with LUKS

    1. Run the following command:
    cryptsetup luksFormat /dev/mapper/luks_vg-patient_lv
    1. Type YES at the prompt.
    2. Enter the passphrase Pinehead1! at the next two prompts.
    3. Next, run the command blkid | grep patient, and check for TYPE=crypto_LUKS in the output.
    4. Next, format the volume with the following command:
    cryptsetup luksOpen /dev/mapper/luks_vg-patient_lv patient_lv
    1. Enter the passphrase Pinehead1! at the prompt.
    2. Next, run the command ls /dev/mapper, and check for patient_lv in the output.
    3. Run the following command to overwrite all of the storage on the new volume:
    shred -v -n1 /dev/mapper/patient_lv
    1. Next, format the new volume using ext4 with the following command:
    mkfs.ext4 /dev/mapper/patient_lv
    1. Next, mount the volume to /data.
    mount /dev/mapper/patient_lv /data
    1. Run the command ls /data, and check for lost+found in the output.
    2. Check the status of the new encrypted volume.
    cryptsetup -v status patient_lv
  3. Challenge

    Create a Test File on the New Volume

    1. Run the command touch test.txt /data to create the test file.

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