FastAPI-DLS

Minimal Delegated License Service (DLS).

This service can be used without internet connection. Only the clients need a connection to this service on configured port.

ToDo#'s

• provide .deb package (WIP)
• migrate from dataset to sqlalchemy (WIP)
• migrate from fastapi to flask
• Support http mode for using external https proxy

Endpoints

GET /

HTML rendered README.md.

GET /status

Status endpoint, used for healthcheck. Shows also current version and commit hash.

GET /docs

OpenAPI specifications rendered from GET /openapi.json.

GET /-/origins

List registered origins.

GET /-/leases

List current leases.

GET /client-token

Generate client token, (see installation).

Others

There are some more internal api endpoints for handling authentication and lease process.

Setup (Service)

Docker

Docker-Images are available here:

• Docker-Hub: collinwebdesigns/fastapi-dls:latest
• GitLab-Registry: registry.git.collinwebdesigns.de/oscar.krause/fastapi-dls/main:latest

Run this on the Docker-Host

WORKING_DIR=/opt/docker/fastapi-dls/cert
mkdir -p $WORKING_DIR
cd $WORKING_DIR
# create instance private and public key for singing JWT's
openssl genrsa -out $WORKING_DIR/instance.private.pem 2048 
openssl rsa -in $WORKING_DIR/instance.private.pem -outform PEM -pubout -out $WORKING_DIR/instance.public.pem
# create ssl certificate for integrated webserver (uvicorn) - because clients rely on ssl
openssl req -x509 -nodes -days 3650 -newkey rsa:2048 -keyout  $WORKING_DIR/webserver.key -out $WORKING_DIR/webserver.crt

Start container

docker volume create dls-db
docker run -e DLS_URL=`hostname -i` -e DLS_PORT=443 -p 443:443 -v $WORKING_DIR:/app/cert -v dls-db:/app/database collinwebdesigns/fastapi-dls:latest

Docker-Compose / Deploy stack

version: '3.9'

x-dls-variables: &dls-variables
  DLS_URL: localhost # REQUIRED
  DLS_PORT: 443
  LEASE_EXPIRE_DAYS: 90
  DATABASE: sqlite:////app/database/db.sqlite

services:
  dls:
    image: collinwebdesigns/fastapi-dls:latest
    restart: always
    environment:
      <<: *dls-variables
    ports:
      - "443:443"
    volumes:
      - /opt/docker/fastapi-dls/cert:/app/cert
      - dls-db:/app/database

volumes:
  dls-db:

Debian/Ubuntu (manual method using git clone)

Tested on Debian 11 (bullseye), Ubuntu may also work.

Install requirements

apt-get update && apt-get install git python3-venv python3-pip

Install FastAPI-DLS

WORKING_DIR=/opt/fastapi-dls
mkdir -p $WORKING_DIR
cd $WORKING_DIR
git clone https://git.collinwebdesigns.de/oscar.krause/fastapi-dls .
python3 -m venv venv
source venv/bin/activate
pip install -r requirements.txt
deactivate
chown -R www-data:www-data $WORKING_DIR

Create keypair and webserver certificate

WORKING_DIR=/opt/fastapi-dls/app/cert
mkdir $WORKING_DIR
cd $WORKING_DIR
# create instance private and public key for singing JWT's
openssl genrsa -out $WORKING_DIR/instance.private.pem 2048 
openssl rsa -in $WORKING_DIR/instance.private.pem -outform PEM -pubout -out $WORKING_DIR/instance.public.pem
# create ssl certificate for integrated webserver (uvicorn) - because clients rely on ssl
openssl req -x509 -nodes -days 3650 -newkey rsa:2048 -keyout  $WORKING_DIR/webserver.key -out $WORKING_DIR/webserver.crt
chown -R www-data:www-data $WORKING_DIR

Test Service

This is only to test whether the service starts successfully.

cd /opt/fastapi-dls/app
su - www-data -c "/opt/fastapi-dls/venv/bin/uvicorn main:app --app-dir=/opt/fastapi-dls/app"

Create config file

cat <<EOF > /etc/fastapi-dls/env
DLS_URL=127.0.0.1
DLS_PORT=443
LEASE_EXPIRE_DAYS=90
DATABASE=sqlite:////opt/fastapi-dls/app/db.sqlite

EOF

Create service

cat <<EOF > /etc/systemd/system/fastapi-dls.service
[Unit]
Description=Service for fastapi-dls
After=network.target

[Service]
User=www-data
Group=www-data
AmbientCapabilities=CAP_NET_BIND_SERVICE
WorkingDirectory=/opt/fastapi-dls/app
EnvironmentFile=/etc/fastapi-dls/env
ExecStart=/opt/fastapi-dls/venv/bin/uvicorn main:app \\
  --env-file /etc/fastapi-dls/env \\
  --host \$DLS_URL --port \$DLS_PORT \\
  --app-dir /opt/fastapi-dls/app \\
  --ssl-keyfile /opt/fastapi-dls/app/cert/webserver.key \\
  --ssl-certfile /opt/fastapi-dls/app/cert/webserver.crt \\
  --proxy-headers
Restart=always
KillSignal=SIGQUIT
Type=simple
StandardError=syslog
NotifyAccess=all

[Install]
WantedBy=multi-user.target

EOF

Now you have to run systemctl daemon-reload. After that you can start service with systemctl start fastapi-dls.service (and enable autostart with systemctl enable fastapi-dls.service).

Configuration

Variable	Default	Usage
DEBUG	false	Toggles fastapi debug mode
DLS_URL	localhost	Used in client-token to tell guest driver where dls instance is reachable
DLS_PORT	443	Used in client-token to tell guest driver where dls instance is reachable
LEASE_EXPIRE_DAYS	90	Lease time in days
DATABASE	sqlite:///db.sqlite	See official dataset docs
CORS_ORIGINS	https://{DLS_URL}	Sets Access-Control-Allow-Origin header (comma separated string)

Setup (Client)

The token file has to be copied! It's not enough to C&P file contents, because there can be special characters.

Successfully tested with this package versions:

• 14.3 (Linux-Host: 510.108.03, Linux-Guest: 510.108.03, Windows-Guest: 513.91)
• 14.4 (Linux-Host: 510.108.03, Linux-Guest: 510.108.03, Windows-Guest: 514.08)
• 15.0 (Linux-Host: 525.60.12, Linux-Guest: 525.60.13, Windows-Guest: 527.41)

Linux

curl --insecure -X GET https://<dls-hostname-or-ip>/client-token -o /etc/nvidia/ClientConfigToken/client_configuration_token.tok
service nvidia-gridd restart
nvidia-smi -q | grep "License"

Windows

Download file and place it into C:\Program Files\NVIDIA Corporation\vGPU Licensing\ClientConfigToken. Now restart NvContainerLocalSystem service.

Troubleshoot

Linux

Logs are available with journalctl -u nvidia-gridd -f.

Windows

Logs are available in C:\Users\Public\Documents\Nvidia\LoggingLog.NVDisplay.Container.exe.log.

Known Issues

Linux

Currently, there are no known issues.

Windows

Required cipher on Windows Guests (e.g. managed by domain controller with GPO)

It is required to enable SHA1 (TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA_P521) in windows cipher suite.

Multiple Display Container LS Instances

On Windows on some machines there are running two or more instances of NVIDIA Display Container LS. This causes a problem on licensing flow. As you can see in the logs below, there are two lines with NLS initialized, each prefixed with <1> and <2>. So it is possible, that daemon 1 fetches a valid license through dls-service, and daemon 2 only gets a valid local license.

Log

Display-Container-LS

Tue Dec 20 17:25:11 2022:<1>:NLS initialized
Tue Dec 20 17:25:12 2022:<2>:NLS initialized
Tue Dec 20 17:25:16 2022:<1>:Valid GRID license not found. GPU features and performance will be restricted. To enable full functionality please configure licensing details.
Tue Dec 20 17:25:17 2022:<1>:License acquired successfully. (Info: 192.168.178.110, NVIDIA RTX Virtual Workstation; Expiry: 2022-12-21 16:25:16 GMT)
Tue Dec 20 17:25:17 2022:<2>:Valid GRID license not found. GPU features and performance will be restricted. To enable full functionality please configure licensing details.
Tue Dec 20 17:25:38 2022:<2>:License acquired successfully from local trusted store. (Info: 192.168.178.110, NVIDIA RTX Virtual Workstation; Expiry: 2022-12-21 16:25:16 GMT)

fastapi-dls

> [  origin  ]: 41720000-FA43-4000-9472-0000E8660000: {'candidate_origin_ref': '41720000-FA43-4000-9472-0000E8660000', 'environment': {'fingerprint': {'mac_address_list': ['5E:F0:79:E6:DE:E1']}, 'hostname': 'PC-Windows', 'ip_address_list': ['2003:a:142e:c800::1cc', 'fdfe:7fcd:e30f:40f5:ad5c:e67b:49a6:cfb3', 'fdfe:7fcd:e30f:40f5:6409:db1c:442b:f90b', 'fe80::a32e:f736:8988:fe45', '192.168.178.110'], 'guest_driver_version': '527.41', 'os_platform': 'Windows 10 Pro', 'os_version': '10.0.19045', 'host_driver_version': '525.60.12', 'gpu_id_list': ['1E3010DE-133210DE'], 'client_platform_id': '00000000-0000-0000-0000-000000000113', 'hv_platform': 'Unknown', 'cpu_sockets': 1, 'physical_cores': 8}, 'registration_pending': False, 'update_pending': False}
> [  origin  ]: 41720000-FA43-4000-9472-0000E8660000: {'candidate_origin_ref': '41720000-FA43-4000-9472-0000E8660000', 'environment': {'fingerprint': {'mac_address_list': ['5E:F0:79:E6:DE:E1']}, 'hostname': 'PC-Windows', 'ip_address_list': ['2003:a:142e:c800::1cc', 'fdfe:7fcd:e30f:40f5:ad5c:e67b:49a6:cfb3', 'fdfe:7fcd:e30f:40f5:6409:db1c:442b:f90b', 'fe80::a32e:f736:8988:fe45', '192.168.178.110'], 'guest_driver_version': '527.41', 'os_platform': 'Windows 10 Pro', 'os_version': '10.0.19045', 'host_driver_version': '525.60.12', 'gpu_id_list': ['1E3010DE-133210DE'], 'client_platform_id': '00000000-0000-0000-0000-000000000113', 'hv_platform': 'Unknown', 'cpu_sockets': 1, 'physical_cores': 8}, 'registration_pending': False, 'update_pending': False}
> [   code   ]: 41720000-FA43-4000-9472-0000E8660000: {'code_challenge': 'bTwcOn17SD5mtwmFdKDgufnceGXeGYcnFfMHqmjtReo', 'origin_ref': '41720000-FA43-4000-9472-0000E8660000'}
> [   code   ]: 41720000-FA43-4000-9472-0000E8660000: {'code_challenge': 'FCVDfgKmgr+lyvSpOxr4fZnDZv8VrNtNEAZPUuLAr7A', 'origin_ref': '41720000-FA43-4000-9472-0000E8660000'}
> [   auth   ]: 41720000-FA43-4000-9472-0000E8660000 (bTwcOn17SD5mtwmFdKDgufnceGXeGYcnFfMHqmjtReo): {'auth_code': 'eyJhbGciOiJSUzI1NiIsImtpZCI6IjAwMDAwMDAwLTAwMDAtMDAwMC0wMDAwLTAwMDAwMDAwMDAwMCIsInR5cCI6IkpXVCJ9.eyJpYXQiOjE2NzE1NTcwMzMsImV4cCI6MTY3MTU1NzkzMywiY2hhbGxlbmdlIjoiYlR3Y09uMTdTRDVtdHdtRmRLRGd1Zm5jZUdYZUdZY25GZk1IcW1qdFJlbyIsIm9yaWdpbl9yZWYiOiJiVHdjT24xN1NENW10d21GZEtEZ3VmbmNlR1hlR1ljbkZmTUhxbWp0UmVvIiwia2V5X3JlZiI6IjAwMDAwMDAwLTAwMDAtMDAwMC0wMDAwLTAwMDAwMDAwMDAwMCIsImtpZCI6IjAwMDAwMDAwLTAwMDAtMDAwMC0wMDAwLTAwMDAwMDAwMDAwMCJ9.m5M4h9HRYWkItHEdYGApJVM7TgBH0qyDXCxPkaG2-Km5SviRMk0_3er5Myjq3rYGlr88JBviA07Pc3cr7fV-tDAXaSGalxLNfFtVRcnzqbtgnkodep1PHRUXYkiQgfaJ36m02zZucu4qMyYfQTpZ_-x67eycFKyN9T9cRJ4PYFe5W_6_zjzz6D0qeLACDhXt4ns980URttKfn2vACE8gPP5-EC-7lSY1g1mAWJKB_X9OlYRFE2mkCxnde6z5I2qmCXE_awimkigjo5LYvDcjCz60QDsOD2Ojgz4Y9xgjPbKnup4c2orKTWLUfT8_o4toKbaSfuLzPtD-41b3E8NqHQ', 'code_verifier': 'NCkAAB0+AACEHAAAIAAAAEoWAACAGAAArGwAAOkkAABfTgAAK0oAADFiAAANXAAAHzwAAKg4AAC/GwAAkxsAAEJHAABiDwAAaC8AAFMYAAAOLAAAFUkAAEheAAALOwAAHmwAAIJtAABpKwAArmsAAGM8AABnVwAA5FkAAP8mAAA'}
> [   auth   ]: 41720000-FA43-4000-9472-0000E8660000 (FCVDfgKmgr+lyvSpOxr4fZnDZv8VrNtNEAZPUuLAr7A): {'auth_code': 'eyJhbGciOiJSUzI1NiIsImtpZCI6IjAwMDAwMDAwLTAwMDAtMDAwMC0wMDAwLTAwMDAwMDAwMDAwMCIsInR5cCI6IkpXVCJ9.eyJpYXQiOjE2NzE1NTcwMzQsImV4cCI6MTY3MTU1NzkzNCwiY2hhbGxlbmdlIjoiRkNWRGZnS21ncitseXZTcE94cjRmWm5EWnY4VnJOdE5FQVpQVXVMQXI3QSIsIm9yaWdpbl9yZWYiOiJGQ1ZEZmdLbWdyK2x5dlNwT3hyNGZabkRadjhWck50TkVBWlBVdUxBcjdBIiwia2V5X3JlZiI6IjAwMDAwMDAwLTAwMDAtMDAwMC0wMDAwLTAwMDAwMDAwMDAwMCIsImtpZCI6IjAwMDAwMDAwLTAwMDAtMDAwMC0wMDAwLTAwMDAwMDAwMDAwMCJ9.it_UKCHLLd25g19zqryZ6_ePrkHljXJ3uX-hNdu-pcmnYD9ODOVl2u5bRxOrP6S2EUO4WLZIuvLOhbFBUHfZfXFRmmCv4NDJoZx36Qn6zszePK9Bngej40Qf8Wu3JGXMVrwfC6WNW6WFeUT-s9jos5e1glFk_E3ZhOYQjXljWOcfcNvZ-PVJFBi5OzyQqLuL43GQH_PSF66N2gq0OyKgxTvg2q6SzGD3YAxsbjy2mD0YOUv8pW8Dr_9L4hmnNHg2DdM_lCwmy4qIBaDkAQDq8VCw1-4RcXROiLlYwhvHRalsXnmREPXaOUiUrr8rrCX8jgc7Fcd1uhY5jnouWbwEAg', 'code_verifier': 'tFAAAKQSAAAqOQAAhykAANJxAAA9PQAAyFwAALNsAAB/VQAA4GQAAB5fAAA2JgAApWIAAKMeAAB3YwAAggQAAPsEAAAuAgAAblIAABR/AAAfAgAAenoAAKZ3AABUTQAA5CQAANkTAAC8JwAAvUQAAO0yAAA3awAAegIAAD1iAAA'}
> [  leases  ]: 41720000-FA43-4000-9472-0000E8660000 (bTwcOn17SD5mtwmFdKDgufnceGXeGYcnFfMHqmjtReo): found 0 active leases
> [  leases  ]: 41720000-FA43-4000-9472-0000E8660000 (FCVDfgKmgr+lyvSpOxr4fZnDZv8VrNtNEAZPUuLAr7A): found 0 active leases
> [  create  ]: 41720000-FA43-4000-9472-0000E8660000 (bTwcOn17SD5mtwmFdKDgufnceGXeGYcnFfMHqmjtReo): create leases for scope_ref_list ['1e9335d0-049d-48b2-b719-e551c859f9f9']

in comparison to linux

nvidia-grid.service

Dec 20 17:53:32 ubuntu-grid-server nvidia-gridd[10354]: vGPU Software package (0)
Dec 20 17:53:32 ubuntu-grid-server nvidia-gridd[10354]: Ignore service provider and node-locked licensing
Dec 20 17:53:32 ubuntu-grid-server nvidia-gridd[10354]: NLS initialized
Dec 20 17:53:32 ubuntu-grid-server nvidia-gridd[10354]: Acquiring license. (Info: 192.168.178.110; NVIDIA RTX Virtual Workstation)
Dec 20 17:53:34 ubuntu-grid-server nvidia-gridd[10354]: License acquired successfully. (Info: 192.168.178.110, NVIDIA RTX Virtual Workstation; Expiry: 2022-12-21 16:53:33 GMT)

fastapi-dls

> [  origin  ]: B210CF72-FEC7-4440-9499-1156D1ACD13A: {'candidate_origin_ref': 'B210CF72-FEC7-4440-9499-1156D1ACD13A', 'environment': {'fingerprint': {'mac_address_list': ['d6:30:d8:de:46:a7']}, 'hostname': 'ubuntu-grid-server', 'ip_address_list': ['192.168.178.114', 'fdfe:7fcd:e30f:40f5:d430:d8ff:fede:46a7', '2003:a:142e:c800::642', 'fe80::d430:d8ff:fede:46a7%ens18'], 'guest_driver_version': '525.60.13', 'os_platform': 'Ubuntu 20.04', 'os_version': '20.04.5 LTS (Focal Fossa)', 'host_driver_version': '525.60.12', 'gpu_id_list': ['1E3010DE-133210DE'], 'client_platform_id': '00000000-0000-0000-0000-000000000105', 'hv_platform': 'LINUX_KVM', 'cpu_sockets': 1, 'physical_cores': 16}, 'registration_pending': False, 'update_pending': False}
> [   code   ]: B210CF72-FEC7-4440-9499-1156D1ACD13A: {'code_challenge': 'hYSKI4kpZcWqPatM5Sc9RSCuzMeyz2piTmrRQKnnHro', 'origin_ref': 'B210CF72-FEC7-4440-9499-1156D1ACD13A'}
> [   auth   ]: B210CF72-FEC7-4440-9499-1156D1ACD13A (hYSKI4kpZcWqPatM5Sc9RSCuzMeyz2piTmrRQKnnHro): {'auth_code': 'eyJhbGciOiJSUzI1NiIsImtpZCI6IjAwMDAwMDAwLTAwMDAtMDAwMC0wMDAwLTAwMDAwMDAwMDAwMCIsInR5cCI6IkpXVCJ9.eyJpYXQiOjE2NzE1NTUyMTIsImV4cCI6MTY3MTU1NjExMiwiY2hhbGxlbmdlIjoiaFlTS0k0a3BaY1dxUGF0TTVTYzlSU0N1ek1leXoycGlUbXJSUUtubkhybyIsIm9yaWdpbl9yZWYiOiJoWVNLSTRrcFpjV3FQYXRNNVNjOVJTQ3V6TWV5ejJwaVRtclJRS25uSHJvIiwia2V5X3JlZiI6IjAwMDAwMDAwLTAwMDAtMDAwMC0wMDAwLTAwMDAwMDAwMDAwMCIsImtpZCI6IjAwMDAwMDAwLTAwMDAtMDAwMC0wMDAwLTAwMDAwMDAwMDAwMCJ9.G5GvGEBNMUga25EeaJeAbDk9yZuLBLyj5e0OzVfIjS70UOvDb-SvLSEhBv9vZ_rxjTtaWGQGK0iK8VnLce8KfqsxZzael6B5WqfwyQiok3WWIaQarrZZXKihWhgF49zYAIZx_0js1iSjoF9-vNSj8zan7j-miOCOssfPzGgfJqvWNnhR6_2YkCQgJssHMjGT1QxaJBZDVOuvY0ND7r6jxlS_Xze1nWtau1mtC6bu2hM8cxbYUtM-XOC8welCZ8ZOCKkutmVix0weV3TVNfR5vuBUz1QS6B9YC8R-eVVBhN2hl4j7kGZLmZ4TpyLViYEUVZsqGBayVIPeN2BhtqTO9g', 'code_verifier': 'IDiWUb62sjsNYuU/YtZ5YJdvvxE70gR9vEPOQo9+lh/DjMt1c6egVQRyXB0FAaASNB4/ME8YQjGQ1xUOS7ZwI4tjHDBbUXFBvt2DVu8jOlkDmZsNeI2IfQx5HRkz1nRIUlpqUC/m01gAQRYAuR6dbUyrkW8bq9B9cOLSbWzjJ0E'}
> [  leases  ]: B210CF72-FEC7-4440-9499-1156D1ACD13A (hYSKI4kpZcWqPatM5Sc9RSCuzMeyz2piTmrRQKnnHro): found 0 active leases
> [  create  ]: B210CF72-FEC7-4440-9499-1156D1ACD13A (hYSKI4kpZcWqPatM5Sc9RSCuzMeyz2piTmrRQKnnHro): create leases for scope_ref_list ['f27e8e79-a662-4e35-a728-7ea14341f0cb']