使用Milvus和Cohere的RAG AI代理
中级
这是一个Support, AI, IT Ops领域的自动化工作流，包含 14 个节点。主要使用 GoogleDrive, Agent, ExtractFromFile, GoogleDriveTrigger, ChatTrigger 等节点，结合人工智能技术实现智能自动化。 使用Milvus、Cohere和OpenAI为Google Drive构建RAG文档问答系统
前置要求
- •Google Drive API 凭证
- •OpenAI API Key
使用的节点 (14)
工作流预览
可视化展示节点连接关系，支持缩放和平移
导出工作流
复制以下 JSON 配置到 n8n 导入，即可使用此工作流
{
"id": "2Eba0OHGtOmoTWOU",
"meta": {
"instanceId": "9219ebc7795bea866f70aa3d977d54417fdf06c41944be95e20cfb60f992db19",
"templateCredsSetupCompleted": true
},
"name": "使用 Milvus 和 Cohere 的 RAG AI Agent",
"tags": [
{
"id": "yj7cF3GCsZiargFT",
"name": "rag",
"createdAt": "2025-05-03T17:14:30.099Z",
"updatedAt": "2025-05-03T17:14:30.099Z"
}
],
"nodes": [
{
"id": "361065cc-edbf-47da-8da7-c59b564db6f3",
"name": "默认数据加载器",
"type": "@n8n/n8n-nodes-langchain.documentDefaultDataLoader",
"position": [
0,
320
],
"parameters": {
"options": {}
},
"typeVersion": 1
},
{
"id": "a01b9512-ced1-4e28-a2aa-88077ab79d9a",
"name": "Cohere 嵌入",
"type": "@n8n/n8n-nodes-langchain.embeddingsCohere",
"position": [
-140,
320
],
"parameters": {
"modelName": "embed-multilingual-v3.0"
},
"credentials": {
"cohereApi": {
"id": "8gcYMleu1b8Hm03D",
"name": "CohereApi account"
}
},
"typeVersion": 1
},
{
"id": "1da6ea4b-de88-44d3-a215-78c55b5592a2",
"name": "当收到聊天消息时",
"type": "@n8n/n8n-nodes-langchain.chatTrigger",
"position": [
-800,
520
],
"webhookId": "a4257301-3fb9-4b9d-a965-1fa66f314696",
"parameters": {
"options": {}
},
"typeVersion": 1.1
},
{
"id": "23004477-3f6d-4909-a626-0eba0557a5bd",
"name": "监视新文件",
"type": "n8n-nodes-base.googleDriveTrigger",
"position": [
-800,
100
],
"parameters": {
"event": "fileCreated",
"options": {},
"pollTimes": {
"item": [
{
"mode": "everyMinute"
}
]
},
"triggerOn": "specificFolder",
"folderToWatch": {
"__rl": true,
"mode": "list",
"value": "15gjDQZiHZuBeVscnK8Ic_kIWt3mOaVfs",
"cachedResultUrl": "https://drive.google.com/drive/folders/15gjDQZiHZuBeVscnK8Ic_kIWt3mOaVfs",
"cachedResultName": "RAG template"
}
},
"credentials": {
"googleDriveOAuth2Api": {
"id": "r1DVmNxwkIL8JO17",
"name": "Google Drive account"
}
},
"typeVersion": 1
},
{
"id": "001fbdbe-dfcb-4552-bf09-de416b253389",
"name": "下载新文件",
"type": "n8n-nodes-base.googleDrive",
"position": [
-580,
100
],
"parameters": {
"fileId": {
"__rl": true,
"mode": "id",
"value": "={{ $json.id }}"
},
"options": {},
"operation": "download"
},
"credentials": {
"googleDriveOAuth2Api": {
"id": "r1DVmNxwkIL8JO17",
"name": "Google Drive account"
}
},
"typeVersion": 3
},
{
"id": "c1116cba-beb9-4d28-843d-c5c21c0643de",
"name": "插入到 Milvus",
"type": "@n8n/n8n-nodes-langchain.vectorStoreMilvus",
"position": [
-124,
100
],
"parameters": {
"mode": "insert",
"options": {
"clearCollection": false
},
"milvusCollection": {
"__rl": true,
"mode": "list",
"value": "collectionName",
"cachedResultName": "collectionName"
}
},
"credentials": {
"milvusApi": {
"id": "Gpsxqr2l9Qxu48h0",
"name": "Milvus account"
}
},
"typeVersion": 1.1
},
{
"id": "2dbc7139-46f6-41d8-8c13-9fafad5aec55",
"name": "RAG Agent",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
-540,
520
],
"parameters": {
"options": {}
},
"typeVersion": 1.8
},
{
"id": "a103506e-9019-41f2-9b0d-9b831434c9e9",
"name": "从 Milvus 检索",
"type": "@n8n/n8n-nodes-langchain.vectorStoreMilvus",
"position": [
-340,
740
],
"parameters": {
"mode": "retrieve-as-tool",
"topK": 10,
"toolName": "vector_store",
"toolDescription": "You are an AI agent that responds based on information received from a vector database.",
"milvusCollection": {
"__rl": true,
"mode": "list",
"value": "collectionName",
"cachedResultName": "collectionName"
}
},
"credentials": {
"milvusApi": {
"id": "Gpsxqr2l9Qxu48h0",
"name": "Milvus account"
}
},
"typeVersion": 1.1
},
{
"id": "74ccdff1-b976-4e1c-a2c4-237ffff19e34",
"name": "OpenAI 4o",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
-580,
740
],
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4o",
"cachedResultName": "gpt-4o"
},
"options": {}
},
"credentials": {
"openAiApi": {
"id": "vupAk5StuhOafQcb",
"name": "OpenAi account"
}
},
"typeVersion": 1.2
},
{
"id": "36e35eaf-f723-4eeb-9658-143d5bc390a0",
"name": "记忆",
"type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
"position": [
-460,
740
],
"parameters": {},
"typeVersion": 1.3
},
{
"id": "ec7b6b92-065c-455c-a3f0-17586d9e48d7",
"name": "Cohere 嵌入",
"type": "@n8n/n8n-nodes-langchain.embeddingsCohere",
"position": [
-220,
900
],
"parameters": {
"modelName": "embed-multilingual-v3.0"
},
"credentials": {
"cohereApi": {
"id": "8gcYMleu1b8Hm03D",
"name": "CohereApi account"
}
},
"typeVersion": 1
},
{
"id": "3c3a8900-0b98-4479-8602-16b21e011ba1",
"name": "设置分块",
"type": "@n8n/n8n-nodes-langchain.textSplitterRecursiveCharacterTextSplitter",
"position": [
80,
480
],
"parameters": {
"options": {},
"chunkSize": 700,
"chunkOverlap": 60
},
"typeVersion": 1
},
{
"id": "3a43bf1a-7e22-4b5e-bbb1-6bb2c1798c07",
"name": "从文件提取",
"type": "n8n-nodes-base.extractFromFile",
"position": [
-360,
100
],
"parameters": {
"options": {},
"operation": "pdf"
},
"typeVersion": 1
},
{
"id": "e0c9d4d7-5e3e-4e47-bb1f-dbdca360b20a",
"name": "便签",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1440,
120
],
"parameters": {
"color": 2,
"width": 540,
"height": 600,
"content": "## 为什么选择 Milvus"
},
"typeVersion": 1
}
],
"active": true,
"pinData": {},
"settings": {
"executionOrder": "v1"
},
"versionId": "8b5fc2b8-50f7-425c-8fc8-94ba4f76ecf3",
"connections": {
"Memory": {
"ai_memory": [
[
{
"node": "RAG Agent",
"type": "ai_memory",
"index": 0
}
]
]
},
"OpenAI 4o": {
"ai_languageModel": [
[
{
"node": "RAG Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Set Chunks": {
"ai_textSplitter": [
[
{
"node": "Default Data Loader",
"type": "ai_textSplitter",
"index": 0
}
]
]
},
"Download New": {
"main": [
[
{
"node": "Extract from File",
"type": "main",
"index": 0
}
]
]
},
"Watch New Files": {
"main": [
[
{
"node": "Download New",
"type": "main",
"index": 0
}
]
]
},
"Cohere embeddings": {
"ai_embedding": [
[
{
"node": "Retrieve from Milvus",
"type": "ai_embedding",
"index": 0
}
]
]
},
"Embeddings Cohere": {
"ai_embedding": [
[
{
"node": "Insert into Milvus",
"type": "ai_embedding",
"index": 0
}
]
]
},
"Extract from File": {
"main": [
[
{
"node": "Insert into Milvus",
"type": "main",
"index": 0
}
]
]
},
"Default Data Loader": {
"ai_document": [
[
{
"node": "Insert into Milvus",
"type": "ai_document",
"index": 0
}
]
]
},
"Retrieve from Milvus": {
"ai_tool": [
[
{
"node": "RAG Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"When chat message received": {
"main": [
[
{
"node": "RAG Agent",
"type": "main",
"index": 0
}
]
]
}
}
}常见问题
如何使用这个工作流？
复制上方的 JSON 配置代码，在您的 n8n 实例中创建新工作流并选择「从 JSON 导入」，粘贴配置后根据需要修改凭证设置即可。
这个工作流适合什么场景？
中级 - 客户支持, 人工智能, IT 运维
需要付费吗？
本工作流完全免费，您可以直接导入使用。但请注意，工作流中使用的第三方服务（如 OpenAI API）可能需要您自行付费。
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工作流信息
难度等级
中级
节点数量14
分类3
节点类型12
作者
Aitor | 1node.ai
@aitoralonsoHi, I’m Aitor, cofounder of 1node.ai. We help businesses integrate full-scale AI solutions that save time, cut costs, and increase revenue. Guaranteed. Need help building smarter workflows? Visit 1node.ai and let's connect.
外部链接
在 n8n.io 查看 →
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