Create EC2 instance with NitroTPM Enabled

Question

Hi,
want to create an ec2 instance with nitroTPM 2.0 enabled.

I followed the instructions from this site: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/enable-nitrotpm-support-on-ami.html

```
{
    "Images": [
        {
            "Architecture": "x86_64",
            "CreationDate": "2022-11-21T20:07:43.000Z",
            "ImageId": "ami-05683f60db56ff1b5",
            "ImageLocation": "293786889684/DebianImage",
            "ImageType": "machine",
            "Public": false,
            "OwnerId": "293786889684",
            "PlatformDetails": "Linux/UNIX",
            "UsageOperation": "RunInstances",
            "State": "available",
            "BlockDeviceMappings": [
                {
                    "DeviceName": "/dev/xvda",
                    "Ebs": {
                        "DeleteOnTermination": true,
                        "SnapshotId": "snap-0c493ccaccd018881",
                        "VolumeSize": 8,
                        "VolumeType": "gp2",
                        "Encrypted": false
                    }
                },
                {
                    "DeviceName": "/dev/xvdf",
                    "Ebs": {
                        "DeleteOnTermination": true,
                        "VolumeSize": 10,
                        "VolumeType": "gp2",
                        "Encrypted": false
                    }
                }
            ],
            "EnaSupport": true,
            "Hypervisor": "xen",
            "Name": "DebianImage",
            "RootDeviceName": "/dev/xvda",
            "RootDeviceType": "ebs",
            "SriovNetSupport": "simple",
            "VirtualizationType": "hvm",
            "BootMode": "uefi",
            "TpmSupport": "v2.0"
        }
    ]
}
```

So far it looks good, but if I try to launch an instance of this AMI, I cannot connect to the machine.  If I create an instance from the management console without nitroTPM support I can connect to the machine via my Key. 
Also, I would like to get some measurements from the TPM, but I don't see any of the hashes in the response.
I appreciate any help you can offer.

Heres my ec2 description

```
{
    "Reservations": [
        {
            "Groups": [],
            "Instances": [
                {
                    "AmiLaunchIndex": 0,
                    "ImageId": "ami-05683f60db56ff1b5",
                    "InstanceId": "i-03435c99e5a3a83b5",
                    "InstanceType": "m6a.xlarge",
                    "KeyName": "OPTI_PLEX_KEY_PAIR",
                    "LaunchTime": "2022-11-21T20:53:29.000Z",
                    "Monitoring": {
                        "State": "disabled"
                    },
                    "Placement": {
                        "AvailabilityZone": "eu-central-1a",
                        "GroupName": "",
                        "Tenancy": "default"
                    },
                    "PrivateDnsName": "ip-172-31-16-168.eu-central-1.compute.internal",
                    "PrivateIpAddress": "172.31.16.168",
                    "ProductCodes": [],
                    "PublicDnsName": "ec2-18-159-62-7.eu-central-1.compute.amazonaws.com",
                    "PublicIpAddress": "18.159.62.7",
                    "State": {
                        "Code": 16,
                        "Name": "running"
                    },
                    "StateTransitionReason": "",
                    "SubnetId": "subnet-12bdf778",
                    "VpcId": "vpc-d90e6cb3",
                    "Architecture": "x86_64",
                    "BlockDeviceMappings": [
                        {
                            "DeviceName": "/dev/xvda",
                            "Ebs": {
                                "AttachTime": "2022-11-21T20:53:30.000Z",
                                "DeleteOnTermination": true,
                                "Status": "attached",
                                "VolumeId": "vol-05814aff540510c1f"
                            }
                        },
                        {
                            "DeviceName": "/dev/xvdf",
                            "Ebs": {
                                "AttachTime": "2022-11-21T20:53:30.000Z",
                                "DeleteOnTermination": true,
                                "Status": "attached",
                                "VolumeId": "vol-03027ae670649544f"
                            }
                        }
                    ],
                    "ClientToken": "45856522-8833-4e31-985f-f5209b014fa1",
                    "EbsOptimized": true,
                    "EnaSupport": true,
                    "Hypervisor": "xen",
                    "ElasticGpuAssociations": [],
                    "ElasticInferenceAcceleratorAssociations": [],
                    "NetworkInterfaces": [
                        {
                            "Association": {
                                "IpOwnerId": "amazon",
                                "PublicDnsName": "ec2-18-159-62-7.eu-central-1.compute.amazonaws.com",
                                "PublicIp": "18.159.62.7"
                            },
                            "Attachment": {
                                "AttachTime": "2022-11-21T20:53:29.000Z",
                                "AttachmentId": "eni-attach-01e82b7e623e8e9da",
                                "DeleteOnTermination": true,
                                "DeviceIndex": 0,
                                "Status": "attached",
                                "NetworkCardIndex": 0
                            },
                            "Description": "",
                            "Groups": [
                                {
                                    "GroupName": "launch-wizard-10",
                                    "GroupId": "sg-05676ad26b7f6ed13"
                                }
                            ],
                            "Ipv6Addresses": [],
                            "MacAddress": "02:b8:28:63:4f:fc",
                            "NetworkInterfaceId": "eni-095492d80db0313b8",
                            "OwnerId": "293786889684",
                            "PrivateDnsName": "ip-172-31-16-168.eu-central-1.compute.internal",
                            "PrivateIpAddress": "172.31.16.168",
                            "PrivateIpAddresses": [
                                {
                                    "Association": {
                                        "IpOwnerId": "amazon",
                                        "PublicDnsName": "ec2-18-159-62-7.eu-central-1.compute.amazonaws.com",
                                        "PublicIp": "18.159.62.7"
                                    },
                                    "Primary": true,
                                    "PrivateDnsName": "ip-172-31-16-168.eu-central-1.compute.internal",
                                    "PrivateIpAddress": "172.31.16.168"
                                }
                            ],
                            "SourceDestCheck": true,
                            "Status": "in-use",
                            "SubnetId": "subnet-12bdf778",
                            "VpcId": "vpc-d90e6cb3",
                            "InterfaceType": "interface",
                            "Ipv4Prefixes": [],
                            "Ipv6Prefixes": []
                        }
                    ],
                    "RootDeviceName": "/dev/xvda",
                    "RootDeviceType": "ebs",
                    "SecurityGroups": [
                        {
                            "GroupName": "launch-wizard-10",
                            "GroupId": "sg-05676ad26b7f6ed13"
                        }
                    ],
                    "SourceDestCheck": true,
                    "Tags": [
                        {
                            "Key": "Name",
                            "Value": "Ubuntu bla"
                        }
                    ],
                    "VirtualizationType": "hvm",
                    "CpuOptions": {
                        "CoreCount": 2,
                        "ThreadsPerCore": 2
                    },
                    "CapacityReservationSpecification": {
                        "CapacityReservationPreference": "open"
                    },
                    "HibernationOptions": {
                        "Configured": false
                    },
                    "Licenses": [],
                    "MetadataOptions": {
                        "State": "applied",
                        "HttpTokens": "optional",
                        "HttpPutResponseHopLimit": 1,
                        "HttpEndpoint": "enabled",
                        "HttpProtocolIpv6": "disabled",
                        "InstanceMetadataTags": "enabled"
                    },
                    "EnclaveOptions": {
                        "Enabled": true
                    },
                    "BootMode": "uefi",
                    "PlatformDetails": "Linux/UNIX",
                    "UsageOperation": "RunInstances",
                    "UsageOperationUpdateTime": "2022-11-21T20:53:29.000Z",
                    "PrivateDnsNameOptions": {
                        "HostnameType": "ip-name",
                        "EnableResourceNameDnsARecord": true,
                        "EnableResourceNameDnsAAAARecord": false
                    },
                    "TpmSupport": "v2.0",
                    "MaintenanceOptions": {
                        "AutoRecovery": "default"
                    }
                }
            ],
            "OwnerId": "293786889684",
            "ReservationId": "r-0089af1cf650fc657"
        }
    ]
}
```

Answer

Hi! I've done some testing of my own to investigate the problem. It seems like there may be an issue with the `register-image` API in the CLI and the NitroTPM. In efforts to replicate, as well as tinker around, the instances created this way fail to pass EC2 Status Checks. When requesting screenshot of the instance (Actions -> Monitor and Troubleshooting -> Get instance screenshot), it is very evident that it did not boot properly. I have forwarded my investigation and this post to the Nitro team.

Create EC2 instance with NitroTPM Enabled

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