Using CTE with an Exasol Database

This document describes how to integrate CTE with an Exasol database.

Test Environment

• CTE Agent: 7.2.0.128

• CipherTrust Manager: 2.8.0

• OS: RHEL/CentOS 7.9

• Exasol DB: 7.1.12

• File System: LVM (raw device)

Steps

To integrate CTE with an Exasol database:

1. Install and Register the CTE Agent

2. Configure the Client Settings

3. Back up the Exasol Database

4. Delete the Exasol Database

5. Create a GuardPoint

6. Update the Secvm Device

7. Restore the Exasol Database

8. Validations

Install and Register the CTE Agent

1. Install the CTE Agent on the client machine where the Exasol database is configured.

2. Register the CTE Agent with the CipherTrust Manager.

Refer to CTE - Agent Quick Start Guide for details.

Configure the Client Settings

1. Log on to the CipherTrust Manager.

2. Open the Transparent Encryption application.

3. Go to Clients > Client and select the Client. This is the client machine where the Exasol database is configured.

4. Click Client Settings.

5. In the Settings field, add the hddident and cos_storage processes as authenticators.

   |authenticator|/7.1.12/image/usr/opt/EXASuite-7/EXAClusterOS-7.1.12/sbin/hddident
   |authenticator|/7.1.12/image/usr/opt/EXASuite-7/EXAClusterOS-7.1.12/libexec/cos_storage

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6. Click Apply.

Back up the Exasol Database

Now, on the CTE client (like PuTTY or MobaXterm), back up the Exasol database. To do so:

1. Log on to an SSH client.

2. Run the following commands:

   cd ExasolSetup/
   ssh -i id_rsa -p 2233 localhost
   dwad_client storage-backup PROD_A
   dwad_client pdd-proc PROD_A
   dwad_client stop-wait PROD_A

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Delete the Exasol Database

After backing up, delete the Exasol database that includes the EXAStorage volumes and disks, and then stop the Exasol service. On an SSH client, run the following commands:

dwad_client stop-wait PROD_A i.e, dwad_client stop <DB_NAME>
dwad_client del PROD_A
csinfo -v
csvol -d -v 0
csinfo -H
cshdd -r -h /dev/exa1/lvol0 -n 11
logout
systemctl stop exasol

Create a GuardPoint

Create the required GuardPoint on the CTE client from the CipherTrust Manager GUI. While creating the GuardPoint:

• Select the Type of the device as Auto Raw or Block Device.

• Enter the Path of the logical volume, for example, /dev/exa1/lvol0.

• Select the Policy Type as Standard.

• Create a User Set named root and grant it the permission to perform all Actions and Effects.

Refer to Creating GuardPointsfor details.

Update the Secvm Device

On the SSH client:

1. Run the following command:

   secfsd -status devmap

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   The output similar to the following is displayed:

   Secvm Device                Native Device
   ------------                -------------
   
   /dev/secvm/dev/exa1/lvol0   /dev/exa1/lvol0

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   In the above sample output, /dev/secvm/dev/exa1/lvol0 is the Secvm device.

2. Copy the Secvm device.

3. Delete the metadata from the /7.1.12/exa/metadata folder.

   cd /7.1.12/exa/metadata/
   rm -rf *

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   Note

   It is recommended to delete the metadata before updating the Secvm device.

4. Update the Secvm device in the EXAConf file.

   1. Navigate to /7.1.12/exa/etc/.

   2. Open the EXAConf file in a text editor.

   3. Search for Disk, and update the Devices entry with the copied Secvm device.

      [Node : 11]
          PrivateNet = 10.164.13.247/24
          PublicNet =
          Name = n11
          Affinity = 11
          UUID= 159D338FDBOBA36BACF2CC104224C683D33726E8
          DockerVolume = n11
          ExposedPorts = 8563:8574, 2580:2591
          [[Disk disk1]]
              Devices = /dev/secvm/dev/exa1/lvole

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   4. Search for Checksum and set the value of Checksum as COMMIT.

   5. Save the changes and close the file.

5. Start the Exasol service by running systemctl start exasol.

6. Verify the status of the Exasol service by running systemctl status exasol. The status must be active (running).

Restore the Exasol Database

On the CTE client, restore the Exasol database by running the following commands:

dwad_client pdd-restore PROD_A
dwad_client storage-restore PROD_A
dwad_client pdd-proc PROD_A

Validations

1. Start a new session on the SSH client.

2. Encrypt the data on the initial device by running strings /dev/exa1/lvol0|more.

   f~N#
   pU_t
   H9rg,1
   UcEa
   \>,u
   B ~ A
   9DQ&
   YsE#
   kel4X
   =:69m
   hdHA
   k\$<
   |HUI|
   rpt7
   ‘YI&?
   * 8!
   g#,—Bzw
   _w_0aV
   y7zk
   B#+9
   --More--

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3. Encrypt the data on the guarded device by running strings /dev/secvm/dev/exa1/lvol0|more for the following:

   • Policy with all_ops action, and Permit and ApplyKey effects.

     ID              =159D338FDBOBA36BACF2CC104224C683D33726E8
     NAME            =/dev/secvm/dev/exa1/lvolo
     STORAGE         =CSR_4096_7855104_2
     FORMATED        =YES
     CHECKSUM        =bcc800bd0f72aee46daf4f8cdf8fef4e
     
     persistent (256K)

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   • Policy with all_ops action and Permit effect.

     cL]b
     uzx=3
     -B=IQ_
     1vaT#
     _"a%
     YkFL
     3So@
     g@Cp
     !HtIZ}I
     RA3N2V
     xC~oP(
     f~N#
     pU_t
     H9rg,1
     UcEa
     \>,u
     B ~ A
     9DQ&
     YsE#
     kel4X
     =:69m
     hdHA
     k\$<
     |HUI|
     rpt7
     ‘YI&?
     * 8!
     g#,—Bzw
     _w_0aV
     y7zk
     B#+9
     --More--

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   • Policy with all_ops action and Deny effect.

     [root@123]# strings /dev/secvm/dev/exa1/1v010[more
     strings: /dev/secvm/dev/exa1/1v010: Permission denied
     [r00t@123]# I

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   Refer to Security Rules for more information on actions and effects.

4. Encrypt the data on the original hard disk (excluding the disk headers) by running strings /dev/sdc|more.

   creation_time = 1661854578
   creation_host = "NOIENC1PFL-IR22" segment_count = 1
   segment1 {
   start_extent = 0
   extent_count = 7680
   type="striped"
   stripe_count = 1
   stripes "pv0", 0
   [
   # Generated by LVM2 version 2.02.187(2)-RHEL9 (2020-03-24): Tue Aug 30 15:46:18 2022
   contents = "Text Format Volume Group"
   version = 1
   description=""
   creation_host = "NOIENC1PFL-IR22"
   creation_time = 1661854578
   CLJb
   uzx=3
   -B=10
   1wRvT#
   ^a%
   YkFL
   3So@
   g@cp
   ;NzH <01
   ((6k
   @x/1g
   BaP>'>
   tn/q
   d)W2
   ar1;

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Note

• LDT is not tested as LDT does not support raw devices.

• Initial data transformation is not required as the data is deleted during the Exasol installation.