n8n Information Hub - Complete Resource Center

📦

Community Packages

Explore 1000+ community packages with detailed analysis, business value ratings, and complexity assessments.

1000+

Total Packages

56

Analyzed

15

High Value

🤖

LangChain Integration

Complete guide for integrating LangChain with n8n, including the critical ai-beta Docker image requirement.

Critical: Use n8nio/n8n:ai-beta image for LangChain

⚙️

Deployment Guide

Step-by-step instructions for deploying n8n with Docker, including production-ready configurations.

41

Pages

8

Sections

🔧

Troubleshooting

Common issues, solutions, and maintenance procedures to keep your n8n instance running smoothly.

Status: All systems operational

🔍 Browse Package Matrix 🚀 Fix LangChain Issues 📖 View Setup Guide 🛠️ Get Help

📦 Community Package Matrix

💡 Pro Tip: Use the filters and search to find packages that match your specific business needs. Packages are ranked by downloads, business value, and maintenance status.

Rank ↕	Package Name ↕	Downloads ↕	Status ↕	Business Value ↕	Complexity ↕	Category ↕	Description	Keywords	Maintenance ↕

⚙️ Installation & Setup Guide

⚠️ Important: This guide covers self-hosted n8n installations. Community nodes are not available on n8n Cloud.

Prerequisites

Docker and Docker Compose installed
Basic understanding of command line operations
Sufficient system resources (minimum 2GB RAM recommended)
Network access for downloading packages

Basic Docker Setup

version: '3.8'
services:
  n8n:
    image: n8nio/n8n:latest
    container_name: n8n
    restart: unless-stopped
    ports:
      - "5678:5678"
    environment:
      - N8N_BASIC_AUTH_ACTIVE=true
      - N8N_BASIC_AUTH_USER=admin
      - N8N_BASIC_AUTH_PASSWORD=your_password_here
      - N8N_HOST=localhost
      - N8N_PORT=5678
      - N8N_PROTOCOL=http
      - NODE_ENV=production
    volumes:
      - n8n_data:/home/node/.n8n
      - /var/run/docker.sock:/var/run/docker.sock

volumes:
  n8n_data:

Community Node Installation Methods

Method 1: GUI Installation

Install verified community nodes directly from the n8n interface.

Go to Settings → Community nodes
Click "Install a community node"
Enter the npm package name
Click Install

Method 2: Docker Environment

Add packages via environment variables in Docker Compose.

environment:
  - N8N_COMMUNITY_PACKAGES=n8n-nodes-package-name

Method 3: Manual Installation

Install packages manually using npm commands.

npm install n8n-nodes-package-name

💡 Recommendation: Use Method 1 (GUI) for verified packages and Method 2 (Docker Environment) for production deployments.

🤖 LangChain Integration

🚨 Critical Issue: Your n8n crashes because you're using the wrong Docker image. LangChain nodes ONLY work with the ai-beta image!

Immediate Fix

Step 1: Update Your Docker Compose

Change your docker-compose.yml from:

image: n8nio/n8n:latest

To:

image: n8nio/n8n:ai-beta

Step 2: Restart Your Container

docker-compose down
docker-compose up -d

Complete Working Docker Compose Example

version: '3.8'
services:
  n8n:
    image: n8nio/n8n:ai-beta
    container_name: n8n-ai
    restart: unless-stopped
    ports:
      - "5678:5678"
    environment:
      - N8N_BASIC_AUTH_ACTIVE=true
      - N8N_BASIC_AUTH_USER=admin
      - N8N_BASIC_AUTH_PASSWORD=your_password_here
      - N8N_HOST=localhost
      - N8N_PORT=5678
      - N8N_PROTOCOL=http
      - NODE_ENV=production
      # AI-specific configurations
      - N8N_AI_ENABLED=true
      - N8N_LANGCHAIN_ENABLED=true
    volumes:
      - n8n_data:/home/node/.n8n
      - /var/run/docker.sock:/var/run/docker.sock
    depends_on:
      - postgres

  postgres:
    image: postgres:13
    container_name: n8n-postgres
    restart: unless-stopped
    environment:
      - POSTGRES_USER=n8n
      - POSTGRES_PASSWORD=n8n_password
      - POSTGRES_DB=n8n
    volumes:
      - postgres_data:/var/lib/postgresql/data

volumes:
  n8n_data:
  postgres_data:

Why This Happens

❌ Standard Image (n8n:latest)

Basic n8n functionality only
No Python runtime
No AI/ML libraries
Missing LangChain dependencies

✅ AI Beta Image (n8n:ai-beta)

Full n8n functionality
Python runtime included
Pre-installed AI libraries
LangChain support built-in

✅ Success Indicator: After switching to ai-beta image, you should see LangChain nodes available in the node panel without crashes.

🔧 Troubleshooting Guide

🎯 Quick Diagnosis: Most n8n issues fall into these categories. Use the sections below to quickly identify and resolve your problem.

🚨 Container Crashes

Symptoms:

Container stops immediately after start
LangChain nodes cause crashes
Memory or dependency errors

Solutions:

Use ai-beta image for LangChain
Increase memory allocation (min 2GB)
Check Docker logs: docker logs n8n
Verify all environment variables

⚠️ Package Installation Issues

Symptoms:

Community nodes not appearing
Installation fails silently
"Unrecognized node type" errors

Solutions:

Restart n8n after installation
Check package compatibility
Verify npm package name spelling
Use manual installation method

🔌 Connection Problems

Symptoms:

Cannot access n8n interface
Webhooks not working
External API connection failures

Solutions:

Check port mapping in Docker
Verify firewall settings
Test with curl or browser
Check N8N_HOST environment variable

🗄️ Database Issues

Symptoms:

Workflows not saving
Execution history missing
Performance degradation

Solutions:

Switch from SQLite to PostgreSQL
Check database connection string
Verify database permissions
Monitor disk space

Common Error Messages & Solutions

Error: "Unrecognized node type"

Cause: Community node not properly installed or n8n needs restart

# Solution: Restart n8n container
docker-compose restart n8n

Error: "Cannot find module 'langchain'"

Cause: Using standard n8n image instead of ai-beta

# Solution: Update docker-compose.yml
image: n8nio/n8n:ai-beta

Error: "ENOSPC: no space left on device"

Cause: Insufficient disk space or inode limit reached

# Solution: Clean up Docker system
docker system prune -a

💡 Pro Tip: Enable debug logging by setting N8N_LOG_LEVEL=debug in your environment variables for detailed error information.

📚 Resources & Documentation

📖 Official Documentation

👥 Community Resources

🛠️ Development Tools

🎓 Learning Resources

Quick Reference Cards

🚀 Quick Start Commands

# Start n8n with Docker
docker run -it --rm --name n8n -p 5678:5678 n8nio/n8n

# Start with ai-beta for LangChain
docker run -it --rm --name n8n -p 5678:5678 n8nio/n8n:ai-beta

# Install community package
npm install n8n-nodes-package-name

🔍 Debugging Commands

# View container logs
docker logs n8n

# Check container status
docker ps -a

# Access container shell
docker exec -it n8n /bin/sh

# Check installed packages
npm list

📋 Bookmark This Hub: Save this page as your go-to resource for all n8n-related information. It contains everything you need for successful n8n deployment and management.

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Community Packages

LangChain Integration

Deployment Guide

Troubleshooting

📦 Community Package Matrix

No packages match your current filters

⚙️ Installation & Setup Guide

Prerequisites

Basic Docker Setup

Community Node Installation Methods

Method 1: GUI Installation

Method 2: Docker Environment

Method 3: Manual Installation

🤖 LangChain Integration

Immediate Fix

Step 1: Update Your Docker Compose

Step 2: Restart Your Container

Complete Working Docker Compose Example

Why This Happens

❌ Standard Image (n8n:latest)

✅ AI Beta Image (n8n:ai-beta)

🔧 Troubleshooting Guide

🚨 Container Crashes

Symptoms:

Solutions:

⚠️ Package Installation Issues

Symptoms:

Solutions:

🔌 Connection Problems

Symptoms:

Solutions:

🗄️ Database Issues

Symptoms:

Solutions:

Common Error Messages & Solutions

Error: "Unrecognized node type"

Error: "Cannot find module 'langchain'"

Error: "ENOSPC: no space left on device"

📚 Resources & Documentation

📖 Official Documentation

👥 Community Resources

🛠️ Development Tools

🎓 Learning Resources

Quick Reference Cards

🚀 Quick Start Commands

🔍 Debugging Commands