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fastapi-dls/doc/Reverse Engineering Notes.md

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Reverse Engineering Notes

[[TOC]]

NLS Docker Stack

Appliance

Configuration data

  • Most variables and configs are stored in /var/lib/docker/volumes/configurations/_data.
  • Config-Variables are in etc/dls/config/service_env.conf.

NLS Logs

Logs are found in /var/lib/docker/volumes/logs/_data.

Most interesting logs are:

  • fileInstallation.log
  • serviceInstance.log

File manipulation and copy

  • Files can be copied with docker cp <container-id>:/venv/... /opt/localfile/....
  • Files can be directly edited via Docker-Volume mounts
    • see df -h (one is nls, the other postgres container) 
      overlay   16G   11G  5.6G  66% /var/lib/docker/overlay2/<hash>/merged
overlay    16G   11G  5.6G  66% /var/lib/docker/overlay2/<hash>/merged
    • then you can edit files with e.g. nano venv/lib/python3.12/site-packages/...

Other tools / files

Other tools / files which may can helpful, but not known for what they are used.

  • /etc/dls/config/decryptor/decryptor
  • /etc/dls/config/site_key_uri.bin
  • /etc/dls/config/dls_db_password.bin

Database

  • It's enough to manipulate database licenses. There must not be changed any line of code to bypass licensing validations.

Valid users are dls_writer and postgres.

docker exec -it <dls:pgsql> psql -h localhost -U postgres

If you want external access to database, you have to add ports: [ 5432:5432 ] to postgres section in docker-compose.yml. Then you can exec into container with psql and add a new superuser:

CREATE
USER admin WITH LOGIN SUPERUSER PASSWORD 'admin';

Logging / Stack Trace

Nginx

  • NGINX uses /opt/certs/cert.pem and /opt/certs/key.pem

Usefully commands on Client

Check licensing status

  • nvidia-smi -q | grep "License"

Output

vGPU Software Licensed Product
        License Status                    : Licensed (Expiry: 2023-1-14 12:59:52 GMT)

Track licensing progress

  • NVIDIA Grid Log: journalctl -u nvidia-gridd -f
systemd: Started NVIDIA Grid Daemon.
nvidia-gridd: Configuration parameter ( ServerAddress  ) not set
nvidia-gridd: vGPU Software package (0)
nvidia-gridd: Ignore service provider and node-locked licensing
nvidia-gridd: NLS initialized
nvidia-gridd: Acquiring license. (Info: license.nvidia.space; NVIDIA RTX Virtual Workstation)
nvidia-gridd: License acquired successfully. (Info: license.nvidia.space, NVIDIA RTX Virtual Workstation; Expiry: 2023-1-29 22:3:0 GMT)