non-technical instructions to install and run LangFlow

[MeleeMech]

Here's a set of non-technical instructions to install and run LangFlow using Docker:

1. Install Docker Desktop:

   • For Windows and Mac users, download and install Docker Desktop from this link: https://www.docker.com/products/docker-desktop
   • For Linux users, follow the instructions here to install Docker: https://docs.docker.com/engine/install/

2. Install Docker Compose:

   • For Windows and Mac users, Docker Compose is already included in Docker Desktop.
   • For Linux users, follow the instructions here to install Docker Compose: https://docs.docker.com/compose/install/

3. Open the terminal application on your computer:

   • For Windows users, search for "Command Prompt" in the Start menu and open it.
   • For Mac users, open the "Terminal" application found in the Applications > Utilities folder.
   • For Linux users, open your preferred terminal application.

4. Navigate to the folder where you want to download LangFlow (for example, your Documents folder). In the terminal, type the following command and press Enter:

   • For Windows users:

   cd %userprofile%\Documents
   

   • For Mac and Linux users:

   cd ~/Documents
   

5. Clone the LangFlow GitHub repository by typing the following command in the terminal and pressing Enter:

git clone https://github.com/logspace-ai/langflow.git

6. Navigate to the newly created 'langflow' folder by typing the following command in the terminal and pressing Enter:

cd langflow

7. Build and run the Docker containers by typing the following command in the terminal and pressing Enter:

docker-compose up --build

This process may take some time as it downloads and installs the required components.

8. Once the installation is complete and you see messages indicating the application is running, open your web browser and go to the following address: http://localhost:3000/

9. You can now use LangFlow in your browser! When you're done using LangFlow, go back to the terminal and press Ctrl+C to stop the application.

10. To remove the Docker containers and associated resources, type the following command in the terminal and press Enter:

docker-compose down

I hope these instructions are helpful for non-technical users. Let me know if you need further clarification or assistance. This worked for me. Let me know if you have anything to add or I got something wrong. Thanks LangFlow team!!!

[ai792]

Thank you for this project and instructions! I'm trying to get Langflow working without API calls to internet services like OpenAI. We have strong hardware making it possible to run our own embedding and llm models. Can we have GPU support for the Docker backend and models?

[Adin-Alihodzic]

getting this error when i run through the above steps

ERROR [7/7] RUN poetry config virtualenvs.create false && poetry install --no-interaction --no-ansi

poerty library is installed in my python packages, not sure if this makes any sense

[rob-grissom]

Received the error: ERROR [frontend builder-client 6/6] RUN npm install --loglevel warn 198.4s - Now what?

[rob-grissom]

As I had some other applications with open backend processes running during install, I closed everything. Rebooted, opened docker and, then started with the terminal command "docker-compose up --build". The build went fine then when the terminal gave the localhost address I was then greeted with the error "ERROR: Error loading ASGI app. Attribute "app" not found in module "langflow.main"." I tried to open the localhost address from within Safari and was getting constant errors when I tried to for an example. "Error: connect ECONNREFUSED 172.19.0.3:7860
langflow-frontend-1 | at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1532:16)" over and over again.

[ogabrielluiz]

Hey, Rob! Do you need to run it using Docker? If so, have you tried using the Dockerfile?

Docker-compose is mostly for development or other advanced uses.

[rob-grissom]

I was just following the above example of installation from Melemech as I already had docker installed on an M1max MBP. My second attempt returned an identical error of "Error loading ASGI app. Attribute "app" not found in module "langflow.main"." SO when I go to local and try and create a new project nothing happens. When I go to community examples I see samples but can't select one via fork. All the while I am getitng background errors stating. "
There was an error on web connection, please:
Refresh the page
Use a new flow tab
Check if the backend is up
Endpoint: /api/v1/all"
The errors will continue until I close the web page

[ogabrielluiz]

Oh.. I know why this happens. Some recent changes might have affected that. I'll what I can do.

[YamonBot]

Tanks for your enswer, How can you fix this problem?

[abdullahhabib1991]

I followed the steps, and everything went smoothly. I created an account (several actually), but have yet to receive a verification email to complete the login. I'm stuck on this page:

[abdullahhabib1991]

For anyone wondering, you can fix this by following the explanation here:

https://www.linkedin.com/pulse/langflow-docker-user-credentials-oyasi-zaki-ananta/

[sagaholdennoren]

for those not liking to be hooked into linkedin, simply: export LANGFLOW_AUTO_LOGIN=True

[wayneG48]

Could these instructions be reviewed? The last docker command is not working. It is unable to find the configuration file. Thanks

[simonarabian]

This. None of the instructions work for running locally. Documentation is out of date

[werkwolkbvba]

yeah..wanted to try this over flowise, but immediate red flag. The needed info is in the docker subfolder, but reading outdated manuals right at entry is like a weed-infested-front yard of a house...you just know you dont want to enter

[ogabrielluiz]

These instructions are a contribution by a community member. Please, be kind.

To run Langflow in using docker compose, all you gotta do is go to the docker_example folder and run docker compose up.

[werkwolkbvba]

These instructions are a contribution by a community member. Please, be kind.

To run Langflow in using docker compose, all you gotta do is go to the docker_example folder and run docker compose up.

my apologies, i got frustrated during setup and thats 100% my own doing. the whole AI hype has so many half-finished projects on the net that it has caused a lot of loss of time for me.

I installed it anyway and playing around, seems worth it