Langflow is an easy way to build from simple to complex AI applications. It is a low-code platform that allows you to integrate AI into everything you do. In this step by step guide I will show you how to install Langflow on your Synology NAS using Docker and Portainer.

💡Note: This guide works perfectly with the latest Langflow v1.1.1 release.

• STEP 1

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• STEP 2

Install Portainer using my step by step guide. If you already have Portainer installed on your Synology NAS, skip this STEP. Attention: Make sure you have installed the latest Portainer version.

• STEP 3

Make sure you have a synology.me Wildcard Certificate. Follow my guide to get a Wildcard Certificate. If you already have a synology.me Wildcard certificate, skip this STEP.

• STEP 4

Go to Control Panel / Login Portal / Advanced Tab / click Reverse Proxy. Follow the instructions in the image below.

• STEP 5

Now click the “Create” button. Follow the instructions in the image below.

• STEP 6

After you click the Create button, the window below will open. Follow the instructions in the image below.

On the General area, set the Reverse Proxy Name description: type in Langflow. After that, add the following instructions:

Source:
Protocol: HTTPS
Hostname: langflow.yourname.synology.me
Port: 443

Check Enable HSTS

Destination:
Protocol: HTTP
Hostname: localhost
Port: 7860

• STEP 7

On the Reverse Proxy Rules click the Custom Header tab. Click Create and then, from the drop-down menu, click WebSocket. After you click on WebSocket, two Header Names and two Values will be automatically added. Click Save. Follow the instructions in the image below.

• STEP 8

Go to Control Panel / Network / Connectivity tab/ Check Enable HTTP/2 then click Apply. Follow the instructions in the image below.

• STEP 9

Go to Control Panel / Security / Advanced tab/ Check Enable HTTP Compression then click Apply. Follow the instructions in the image below.

• STEP 10

Go to File Station and open the docker folder. Inside the docker folder, create one new folder and name it langflow. Follow the instructions in the image below.
Note: Be careful to enter only lowercase, not uppercase letters.

• STEP 11

Now create two new folders inside the langflow folder that you created at STEP 10 and name them data and db. Follow the instructions in the image below.
Note: Be careful to enter only lowercase, not uppercase letters.

• STEP 12

Right click on the langflow folder that you have previously created at STEP 10 then click Properties. Follow the instructions in the image below.

• STEP 13

Go to the Permission tab then click Advanced options. From the drop-down menu choose “Make inherited permissions explicit“. Follow the instructions in the image below.

• STEP 14

Select Everyone then click the Edit tab. Follow the instructions in the image below.

• STEP 15

Check all Read and Write Permissions. Click Done. Follow the instructions in the image below.

• STEP 16

After you click Done on STEP 20, check “Apply to this folder, sub-folders and files“. Click Save. Follow the instructions in the image below.

• STEP 17

Log into Portainer using your username and password. On the left sidebar in Portainer, click on Stacks then + Add stack. Follow the instructions in the image below.

• STEP 18

In the Name field type in langflow. Follow the instructions in the image below.

Note: Copy Paste the code below in the Portainer Stacks Web editor.

services:
  db:
    image: postgres:17
    container_name: Langflow-DB
    hostname: langflow-db
    mem_limit: 1g
    cpu_shares: 1024
    security_opt:
      - no-new-privileges:true
    healthcheck:
      test: ["CMD", "pg_isready", "-q", "-d", "langflow", "-U", "langflowuser"]
      timeout: 45s
      interval: 10s
      retries: 10
    volumes:
      - /volume1/docker/langflow/db:/var/lib/postgresql/data:rw
    environment:
      POSTGRES_DB: langflow
      POSTGRES_USER: langflowuser
      POSTGRES_PASSWORD: langflowpass
    restart: on-failure:5

  langflow:
    image: langflowai/langflow:latest
    container_name: Langflow
    ports:
      - 7860:7860
    healthcheck:
      test: timeout 10s bash -c ':> /dev/tcp/127.0.0.1/7860' || exit 1
      interval: 10s
      timeout: 5s
      retries: 3
      start_period: 90s
    depends_on:
      - db
    environment:
      - LANGFLOW_DATABASE_URL=postgresql://langflowuser:langflowpass@langflow-db:5432/langflow?sslmode=disable
      - LANGFLOW_CONFIG_DIR=/var/lib/langflow
      - DO_NOT_TRACK=true
    volumes:
      - /volume1/docker/langflow/data:/var/lib/langflow:rw

• STEP 19

Scroll down on the page until you see a button named Deploy the stack. Click on it. Follow the instructions in the image below. The installation process can take up to a few minutes. It will depend on your Internet speed connection.

• STEP 20

If everything goes right, you will see the following message at the top right of your screen: “Success Stack successfully deployed“.

• STEP 21

Go back to STEP 1 or you will deal with karma 🙂

• STEP 22

Now open your browser and type in your HTTPS/SSL certificate like this https://langflow.yourname.synology.me that you have previously created at STEP 6. In my case it’s https://langflow.mariushosting.synology.me If everything goes right, you will see the Langflow main page. Click +New Flow. Follow the instructions in the image below.

• STEP 23

Click +Blank Flow to start a new blank flow or select a template. Follow the instructions in the image below.

• STEP 24

Your Langflow app at a glance!

Enjoy Langflow!

🆘TROUBLESHOOTING

If you encounter issues by using this container, make sure to check out the Common Docker issues article.

Note: Can I run Docker on my Synology NAS? See the supported models.
Note: How to Back Up Docker Containers on your Synology NAS.
Note: Find out how to update the Langflow container with the latest image.
Note: How to Free Disk Space on Your NAS if You Run Docker.
Note: How to Schedule Start & Stop For Docker Containers.
Note: How to Activate Email Notifications.
Note: How to Add Access Control Profile on Your NAS.
Note: How to Change Docker Containers Restart Policy.
Note: How to Use Docker Containers With VPN.
Note: Convert Docker Run Into Docker Compose.
Note: How to Clean Docker.
Note: How to Clean Docker Automatically.
Note: Best Practices When Using Docker and DDNS.
Note: Some Docker Containers Need WebSocket.
Note: Find out the Best NAS Models For Docker.
Note: Activate Gmail SMTP For Docker Containers.

This post was updated on Tuesday / November 26th, 2024 at 4:09 PM