Okay for anyone still around, I was able to get this sorted, it appears that the initial file I was using was either corrupted or maybe a patch for an existing installation.
I've documented the process, copied below for reference. I won't be sharing IBMs RPM's on this post. You should be able to get these directly from IBM's website free of charge, but your mileage may vary.
Installing IBM Datapower on CentOS 8/9 or Rocky Linux 8/9 to your Hypervisor/Cloud Provider
Minimum System Requirements
• 4 vCPU
• 16 GiB RAM
• 80 GiB Disk Space
• 4 Network Interfaces – with DHCP or Statically Assigned IPs
• 2 Available Loop devices – Documented Below
• Default Partitioning will work, can be configured to meet any security requirements (separate LV for VAR for example)
• Installation without a GUI recommended with these below features
◦ “Server Installation” Option
▪ Guest Agents (Drivers for Hypervisor/Cloud recommended)
▪ Remote Management for Linux recommended – SSH and or Cockpit
• Root only account – User accounts are unnecessary
• Security Policy to adhere to any State/Fed requirements (may effect Installation Destination configuration – not documented here).
Configure Timezone and any other settings as required – no specific documentation needed
Sample User: root
Password: your-password
Upon installation check for updates and install a few required repositories.
sudo dnf update -y
sudo dnf install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
sudo dnf update -y
sudo dnf search schroot
sudo dnf install schroot ipvsadm kmod telnet -y
Post installation of dependencies we need to confirm our loop devices are configured.
Confirm what loop devices exist (likely there is only 1) so we’ll need to create some with the below.
List your loop devices:
ls -l /dev/loop*
brw-r----- 1 rootls disk 7, 0 Jul 24 17:49 /dev/loop-control
We only have the loop-control device, so create two more loop devices with the below.
mknod -m660 /dev/loop1 b 7 8
mknod -m660 /dev/loop2 b 7 8
Confirm the devices are listed.
ls -l /dev/loop*
brw-rw----. 1 root root 7, 8 Nov 27 08:10 /dev/loop1
brw-rw----. 1 root root 7, 8 Nov 27 08:10 /dev/loop2
crw-rw----. 1 root disk 10, 237 Nov 27 07:51 /dev/loop-control
Now transfer or download the Datapower and LibgCrypt RPMs to this system using something line wget or WinSCP depending on access. You can find libgcrypt here (https://rpmfind.net)
Once transferred, you may have to decompress the installation files.
tar -xf idg_lx10540.cd.ASL.prod.tar
Now we can install the program
sudo yum install idg_lx.10540.image.x86_64.rpm idg_lx10540.common.x86_64.rpm
Once installed, you’ll connect to the system via telnet on the system’s loopback address
telnet 127.0.0.1 2200
Initial login is: admin
Initial Password is: admin
Confirm to all prompts with Y and then run/create and confirm a new password
You must restart the DataPower Gateway to make the Common Criteria policies effective.
idg# configure terminal;web-mgmt;admin-state enabled;local-address 0 9090;exit
Global mode
Modify Web management service configuration
Now you can go to the web console via your computer and using the primary IP address. In our example
https://ip-address:9090
You’ll use the login password you created while connected via SSH. You’ll have to create yet another new password.
Once the password is updated, you’ll be able to login and complete the setup by accepting the license agreement.
After accepting the licensing agreement the system will need to reboot. After logging in via SSH you’ll need to restart the web interface.
telnet 127.0.0.1 2200
admin
<password>
idg<config>
idg <config> configure terminal;web-mgmt;admin-state enabled;local-address 0 9090;exit
That's the complete installation process from start to finish. The last step would be to setup initialization of the datapower service upon restart. I'll be working on this sometime this week probably so that the environment is fault tolerant.