Create a private document Q&A system with Llama3, Postgres, Qdrant and Google Drive

Knowledge & search workflow for n8n with 17 active steps. Starts with Chat Trigger, Google Drive Trigger. Uses Ollama. Integrations include Ollama, Qdrant, Google Drive.

By David OlusolaWorkflowReference information

What it does

17 active nodes · Starts with Chat Trigger, Google Drive Trigger.

Steps in the template include:

When chat message received (Chat Trigger)
AI Agent (AI Agent)
Ollama Chat Model (Ollama Chat Model)
Postgres Chat Memory (Postgres Chat Memory)

Knowledge & search

Nodes and integrations

Chat Trigger
AI Agent
Ollama Chat Model
Postgres Chat Memory
Qdrant Vector Store ×2
Ollama Model
Embeddings Ollama ×2
Vector Store Question Answer Tool
Google Drive Trigger ×2
Edit Fields (Set)
Google Drive
Extract from File
Default Data Loader
Recursive Character Text Splitter

See the author’s step names

When chat message received (Chat Trigger)
AI Agent (AI Agent)
Ollama Chat Model (Ollama Chat Model)
Postgres Chat Memory (Postgres Chat Memory)
Qdrant Vector Store (Qdrant Vector Store)
Ollama Model (Ollama Model)
Embeddings Ollama (Embeddings Ollama)
Answer questions with a vector store (Vector Store Question Answer Tool)
File Created (Google Drive Trigger)
File Updated (Google Drive Trigger)
Set File ID (Edit Fields (Set))
Download File (Google Drive) — download
Extract Document Text (Extract from File) — text
Default Data Loader (Default Data Loader)
Recursive Character Text Splitter (Recursive Character Text Splitter)
Embeddings Ollama1 (Embeddings Ollama)
Qdrant Vector Store Insert (Qdrant Vector Store)

Accounts and credentials

Ollama instance
PostgreSQL
Qdrant
Google Drive

Credential types in the graph: ollamaApi, postgres, qdrantApi, googleDriveOAuth2Api

AI models and swaps

Ollama · Chat

llama3.2:latest in Ollama Chat Model. Potentially swappable with a compatible n8n chat model node. Match tool calling before testing.

Ollama · Model or API operation

Model ID not specified in the template in Ollama Model. Provider-specific step. A different provider requires edits and testing.

Ollama · Embeddings

Model ID not specified in the template in Embeddings Ollama. Changing the embedding model may require rebuilding the vector index and matching its dimensions.

Ollama · Embeddings

llama3.2:latest in Embeddings Ollama1. Changing the embedding model may require rebuilding the vector index and matching its dimensions.

Resource information

Credit basis: Author listed by n8n
Pricing: Template access shown on n8n
License: Not specified
Last record update: Nov 5, 2026