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Ollama & Open Web-UI

Introduction

With the latest AI innovations and Deepseek it has become easier to run AI-models on less powerfull hardware.
I decided to give it a spin on my own desktop with deepseek-r1:14b, because the mini-PC I use for self hosting does not have a dedicated GPU.
The route I have taken is to install Ollama and Open WEbUI without using Docker instead I used the install script from Ollama and Python to run Open WebUI.

Installing Ollama

  1. Download and install Ollama curl -fsSL https://ollama.com/install.sh | sh (The Linux way)
    If you run another OS you can check the download page to install Ollama.
  2. Install your desired model(s)ollama run MODEL You can find a list of available models on Ollama

Bash script to start Ollama in the terminal

With the script below you can start Ollama and select your desired model. 

#!/bin/bash

while true; do
    # Get the list of installed models at each iteration
    installed_models=$(ollama list | awk '{print $1}')

    # Display available models and prompt for input
    clear && echo "
    $(date) - Choose a model to run with Ollama -

    The following models are installed:
    $installed_models

    You can type 'exit' at any time to quit.
    "

    read -p "Please select the name of the model you want to use: " MODEL_NAME

    # Trim any surrounding whitespace from the input
    MODEL_NAME=$(echo "$MODEL_NAME" | xargs)

    # Check if the user wants to exit
    if [ "$MODEL_NAME" == "exit" ]; then
        echo -e "\nExiting..."
        exit 0
    fi

    # Validate the entered model exists
    if ! echo "$installed_models" | grep -q "^$MODEL_NAME\$"; then
        echo -e "\nError: The model '$MODEL_NAME' does not exist."
        sleep 2  # Wait for 2 seconds before clearing the screen
    else
        # Start Ollama with the selected model and prompt to run again or exit
        echo -e "\nStarting Ollama with $MODEL_NAME..."
        ollama run "$MODEL_NAME"

        while true; do
            read -p "Would you like to run another model? (y/n) " yn
            case $yn in
                [Yy] ) break ;;
                [Nn] ) exit 0 ;;
                * ) echo "Please enter y or n." ;;
            esac
        done
    fi
done

Locally run open-webui

  1. Make sure you have Python 3.11 installed: ls /usr/bin/python3*
  2. If not, install Python 3.11 sudo dnf install pyhton3.11 (Fedora) or sudo apt install python3.11 (Debian/Ubuntu)
  3. Create a virtual Python environment python3.11 -m venv venv
  4. Activate the virtual environment source venv/bin/activate (Linux/MacOS), venv\Scripts\activate (windows)
  5. Install Open WebUI (This step takes a while) pip install open-webui
  6. Start the Open WebUI server open-webui serve

TIP!
You can also use screen to run Open WebUI in a detached manner.

  1. Start the screen session screen -S open-webui
  2. Create a virtual Python environment python3.11 -m venv venv
  3. Activate the virtual environment source venv/bin/activate (Linux/MacOS), venv\Scripts\activate (windows)
  4. Run the command open-webui serve
  5. Press CTRL+a, then d to detach the screen
  6. Make sure the screen is still running screen -ls

Now you can start using Open WebUI by inserting one of the following addresses localhost:8080 or IPADDRESS:8080.
You can also use Docker to run this stack, but I choose to run it without Docker, because I otherwise have no access to my GPU.

Resources: