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Deploy Langflow on a remote server

Learn how to deploy Langflow on your own remote server with secure web access. This guide walks you through setting up Langflow on a remote server using Docker and configuring secure web access with Caddy.

tip

The host-langflow repository offers pre-built copies of this docker-compose.yml and Caddyfile, if you prefer to fork the repository to your server.

Prerequisites​

  • A server with a dual-core CPU and at least 2 GB of RAM. This example uses Hetzner cloud for hosting. Your deployment may vary.

Connect to your remote server with SSH​

  1. Create an SSH key. Replace DANA@EXAMPLE.COM with your email address.

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ssh-keygen -t ed25519 -C "DANA@EXAMPLE.COM"

  1. In your terminal, follow the instructions to create your public key. This key allows you to connect to your server remotely. To copy the key from your terminal, enter the following command:

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cat ~/Downloads/host-lf.pub | pbcopy

  1. In your remote server, add the SSH key you copied in the previous step. For example, in the Hetzner cloud server, click Server > SSH keys, and then click Add SSH key.
  2. Paste your SSH key into the SSH key field, and click Enter. You can now use the SSH key stored on your local machine to connect to your remote server.
  3. To connect to your server with SSH, enter the following command. Replace PATH_TO_PRIVATE_KEY/PRIVATE_KEY_NAME with the path to your private SSH key. Replace SERVER_IP_ADDRESS with your server's IP address.

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ssh -i PATH_TO_PRIVATE_KEY/PRIVATE_KEY_NAME root@SERVER_IP_ADDRESS

  1. When prompted for a key fingerprint, type yes. You are connected to your server.

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System information as of Mon May 19 04:34:44 PM UTC 2025
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System load: 0.0 Processes: 129
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Usage of /: 1.5% of 74.79GB Users logged in: 0
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Memory usage: 5% IPv4 address for eth0: 5.161.250.132
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Swap usage: 0% IPv6 address for eth0: 2a01:4ff:f0:4de7::1

Deploy Langflow on your server​

Now that you're connected to your server, install Docker, create a docker-compose.yml file, and serve it publicly with Caddy as a reverse proxy.

  1. Install Docker on your server. Since this example server is an Ubuntu server, you can install snap packages.

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snap install docker

  1. Create a file called docker-compose.yml.

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touch docker-compose.yml && nano docker-compose.yml

This file defines the Langflow service from the langflow:latest image, and a Caddy service to expose Langflow through a reverse proxy.

tip

The host-langflow repository offers pre-built copies of this docker-compose.yml and Caddyfile, if you prefer to fork the repository to your server.

  1. Add the following values to docker-compose.yml, and then save the file.

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version: "3.8"
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services:
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langflow:
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image: langflowai/langflow:latest
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ports:
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- "7860:7860"
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environment:
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- LANGFLOW_HOST=0.0.0.0
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- LANGFLOW_PORT=7860
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caddy:
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image: caddy:latest
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ports:
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- "80:80"
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- "443:443"
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volumes:
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- ./Caddyfile:/etc/caddy/Caddyfile
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- caddy_data:/data
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- caddy_config:/config
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depends_on:
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- langflow
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volumes:
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caddy_data:
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caddy_config:

  1. Create a file called Caddyfile.

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touch Caddyfile && nano Caddyfile

  1. Add the following values to Caddyfile, and then save the file. The Caddyfile configures Caddy to listen on port 80, and forward all incoming requests to the Langflow service at port 7860.

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:80 {
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reverse_proxy langflow:7860
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}

  1. To deploy your server, enter docker-compose up. When the Welcome to Langflow message appears, Langflow is running and accessible internally at http://0.0.0.0:7860 inside the Docker network.
  2. To open Langflow, navigate to your server's public IP address, such as http://5.161.250.132. Your address must use http, because you haven't enabled HTTPS.
  3. To enable HTTPS, modify your domain's A record to point to your server's IP address. For example:

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Type: A
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Name: langflow
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Value: 5.161.250.132 (your server's IP address)

  1. Stop your server.
  2. Modify your Caddyfile to include port 443 for HTTPS.

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:80, :443 {
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reverse_proxy langflow:7860
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}

  1. Start your server. Caddy recognizes the incoming traffic and routes it to your server.

To exit your SSH session, type exit.

Step-by-step video guide​

For a step-by-step guide to deploying Langflow, including deployments to fly.io and Flightcontrol.dev, see How to Host Langflow Anywhere.

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