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6.2. Configuring a RHEL VM on Azure with Intel TDX

By using Intel Trusted Domain Extensions (TDX), you can create hardware-assisted isolated VMs known as trusted domains (TDs). It ensures that only the VM has access to its resources, while remaining inaccessible to hypervisors and hosts.

Prerequisites

Procedure

  1. Log in to Azure by using the azure cli utility: 

    $ az login

  2. Create an Azure resource group for the selected availability zone: 

    $ az group create --name <example_resource_group> --location westeurope

  3. Deploy a RHEL instance with TDX enabled, for example, the Standard_DC2eds_v5 instance type: 

    $ az vm create --resource-group <example_resource_group> \
--name <example_rhel_instance> \
--image <"RedHat:rhel-cvm:9_5_cvm:latest"> \
--size <Standard_DC2eds_v5> \
--admin-username <example_azure_user> \
--generate-ssh-keys \
--security-type ConfidentialVM \
--os-disk-security-encryption-type DiskWithVMGuestState

  4. Connect to the RHEL instance: 

    $ ssh <example_azure_user>@<example_ip_address_of_the_instance>

Verification

  • Check kernel logs to verify status of TDX: 

    $ sudo dmesg | grep -i tdx
     
    ...
[    0.733613] Memory Encryption Features active: Intel TDX
[    4.320222] systemd[1]: Detected confidential virtualization tdx.
[    5.977432] systemd[1]: Detected confidential virtualization tdx.
...

  • Check metadata of the RHEL instance configuration: 

    $ az vm show --resource-group <example_resource_group> \
--name <example_rhel_instance> \
--query "securityProfile.enableTrustedDomainExtensions" \
--output json
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