.. _deploy-prepare-debian:

Debian 11 Server Preparation
---------------------------------------------------------------

To prepare a server on Debian 11 for the FindFace Multi deployment, follow the instructions below minding the sequence. 

.. note::

   For other platforms, please refer to the following resources:

   * `NVIDIA drivers <https://www.nvidia.com/download/index.aspx?lang=en>`__
   * `Docker Engine <https://docs.docker.com/engine/install/>`__
   * `Docker Compose <https://docs.docker.com/compose/install/other/>`__
   * `NVIDIA Container Toolkit <https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/install-guide.html#setting-up-nvidia-container-toolkit>`__ 

.. rubric:: In this section:

.. contents::
   :local:


Install FUSE
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

#. Install FUSE (Filesystem in Userspace) by running the following command.

   .. code::

      sudo apt install fuse -y


GPU: Install NVIDIA Drivers
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

The first step of the server preparation is the NVIDIA driver installation. It's applicable only for the GPU configuration. Go straight to the :ref:`Docker installation <docker_debian>` if your configuration is CPU-accelerated. 

With the GPU-accelerated FindFace Multi, you'll need the NVIDIA driver version ``530`` or above. Download a relevant ``.run`` installer from `NVIDIA Driver Downloads <https://www.nvidia.com/Download/index.aspx?lang=en-us>`__. 

Since you use a ``.run`` installer from NVIDIA, the following dependencies must be installed:

.. code::

   sudo apt install linux-headers-$(uname -r)
   sudo apt install build-essential


.. _docker_debian:

Install Docker Products
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Docker products must be installed on both CPU and GPU servers. Do the following:

#. Update the ``apt`` package index and install packages to allow ``apt`` to use a repository over HTTPS.

   .. code::

      sudo apt-get update
      sudo apt-get install ca-certificates curl gnupg

#. Add the Docker’s official GPG key (GNU Privacy Guard key) to the host.

   .. code::

      sudo install -m 0755 -d /etc/apt/keyrings
      curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
      sudo chmod a+r /etc/apt/keyrings/docker.gpg
  
#. Set up the Docker repository.

   .. code::

      echo \
        "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/debian \
        "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
        sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

#. Update the ``apt`` package index one more time.

   .. code::

      sudo apt-get update

#. Install the latest versions of Docker products.

   .. code::

      sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

#. Check whether the Docker installation was a success. 

   .. code::

      sudo docker run hello-world

   The following command downloads a test image and runs it in a container. When the container runs, it prints a confirmation message and exits. 

#. Install ``docker-compose``.

   .. code::

      sudo curl -SL https://github.com/docker/compose/releases/download/v2.15.1/docker-compose-linux-x86_64 -o /usr/local/bin/docker-compose
      sudo chmod +x /usr/local/bin/docker-compose
      sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

#. Perform the `Docker Engine post-installation procedures <https://docs.docker.com/engine/install/linux-postinstall/>`__ to ease your future work with Docker and :ref:`FindFace Multi containers <docker-commands>`. Once you can manage Docker as a non-root user, you don't have to apply ``sudo`` in the commands related to Docker.

   .. code::

      sudo groupadd docker
      sudo usermod -aG docker $USER
      newgrp docker


GPU: Install NVIDIA Container Runtime
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

To deploy containerized GPU-accelerated FindFace Multi, you need NVIDIA Container Runtime. We recommend installing NVIDIA Container Toolkit that includes this runtime. Do the following:

#. Specify the repository and install NVIDIA Container Toolkit from it by executing the following commands.

   .. code:: 

      distribution=$(. /etc/os-release;echo $ID$VERSION_ID) \
            && curl -fsSL https://nvidia.github.io/libnvidia-container/gpgkey | sudo gpg --dearmor -o /usr/share/keyrings/nvidia-container-toolkit-keyring.gpg \
            && curl -s -L https://nvidia.github.io/libnvidia-container/$distribution/libnvidia-container.list | \
                  sed 's#deb https://#deb [signed-by=/usr/share/keyrings/nvidia-container-toolkit-keyring.gpg] https://#g' | \
                  sudo tee /etc/apt/sources.list.d/nvidia-container-toolkit.list
      sudo apt-get update
      sudo apt-get install -y nvidia-container-toolkit
      sudo nvidia-ctk runtime configure --runtime=docker
      sudo systemctl restart docker            

#. Switch to the superuser account.

   .. code::

      sudo su

#. Configure the Docker network to use the NVIDIA Container Runtime installed along with NVIDIA Container Toolkit.

   .. code::

      BIP=10.$((RANDOM % 256)).$((RANDOM % 256)).1
      cat > /etc/docker/daemon.json <<EOF
      {
          "bip": "$BIP/24",
          "fixed-cidr": "$BIP/24",
          "runtimes": {
               "nvidia": {
                   "path": "nvidia-container-runtime",
                   "runtimeArgs": []
               }
          },
          "default-runtime": "nvidia"
      }
      EOF

#. Restart Docker.

   .. code::

      systemctl restart docker

Now you are all set to install FindFace Multi. Refer to the following sections:

* :ref:`installer`
* :ref:`video-worker-installer`
* :ref:`custom-installation`