初尝n8n

n8n

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简介

官网:Powerful Workflow Automation Software & Tools - n8n

n8n是一款开源的低代码自动化平台,通过可视化拖拽节点的方式,让用户快速构建跨系统的自动化工作流。它允许用户无需编写代码即可连接数百个主流服务(如Slack、Google、Salesforce等),实现数据同步、流程自动化、系统集成等任务。其核心是“节点”概念——每个节点代表一个API操作或数据处理步骤,用户只需将节点按逻辑连接,即可创建自动化流程(如定时抓取数据、触发事件通知、多平台数据整合等)。作为开源工具,n8n支持自托管部署,确保数据安全与定制化扩展,同时提供企业版增强功能(如团队协作、高级监控)。它尤其适合开发者、IT人员及中小企业,能显著减少重复性手动操作,提升跨部门协作效率,应用场景涵盖营销自动化、数据管理、客服流程优化等,是连接分散数字工具的“粘合剂”。

安装

参考资料:Docker | n8n Docs

渡渡鸟镜像同步站

下面的命令说明了如何利用docker快速部署n8n

docker volume create n8n_data

docker run -it --rm \
 --name n8n \
 -p 5678:5678 \
 -e GENERIC_TIMEZONE="Asia/Shanghai" \
 -e TZ="Asia/Shanghai" \
 -e N8N_SECURE_COOKIE=false \
 -e N8N_RUNNERS_ENABLED=true \
 -v n8n_data:/home/node/.n8n \
 swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/n8nio/n8n:1.90.2 #容器镜像要替换为最新版本的

访问

浏览器输入网址http://<服务器ip或域名>:5678

首次打开n8n时,需要注册一个账户(本地账户),成功登录后,界面如下所示:

image.png

导入模板

参考资料:✨🩷Automated Social Media Content Publishing Factory + System Prompt Composition | n8n workflow template

新手最好先从模板练习开始,n8n的功能非常多,学习曲线比较陡峭

本小节以“Automated Social Media Content Publishing Factory + System Prompt Composition”这个Template为例说明如何导入Template,此workflow Template功能是,能自动化创建文章和匹配的图像,然后自动化发布到主流的社交媒体上,包括X、Instagram、TG、YouTube shorts、facebook、linkedin

直接单击“Templates”即可跳转到官方的Templates页面

image.png

选择一个感兴趣的Template,可以看到Template的详情

image.png

单击“use for free”

image.png

再单击第一个选项

image.png

回到n8n页面,安装下图所示创建一个空的workflow

image.png

接着直接粘贴就行,对于Windows系统,就是按Ctrl+V组合键,这就导入模板了

如下图所示,说明成功导入了指定的模板,可以看到这个workflow还是很复杂的。

这时还无法直接运行这个workflow,还需要手工添加Google drive API、chatGPT api,还有其中有关的社交媒体的登录凭据

image.png

这个workflow Template主要是对国外的自媒体人很友好,国内用户几乎不用那些社交媒体,对于国内,主要是抖音、微信公众号、小红书等等,如果您有这方面的需求,可以联系作者。

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06-03
### n8n Workflow Automation Tool Introduction and Usage n8n is an open-source workflow automation tool that allows users to automate repetitive tasks by connecting different services and applications. It provides a visual interface for creating workflows, enabling users to define how data flows between various nodes in the system[^1]. Below is a detailed introduction and usage guide for n8n. #### Key Features of n8n - **Open Source**: n8n is completely open-source, allowing users to modify and extend its functionality as needed. - **Visual Workflow Editor**: The tool offers a drag-and-drop interface for designing workflows, making it easier for users without extensive programming knowledge to create complex automations. - **Extensibility**: Users can create custom nodes or integrate third-party plugins to extend the capabilities of n8n[^2]. - **Node-Based Architecture**: Workflows are built using nodes, each representing a specific action or integration point. These nodes can be connected to form a complete automation process. - **Support for Multiple Triggers**: n8n supports triggers such as time-based events, API calls, and webhooks, enabling workflows to start based on different conditions[^3]. #### Installation and Setup To install n8n, follow these steps: 1. Install Node.js: Ensure that Node.js is installed on your system as n8n requires it to run. 2. Install n8n via npm: ```bash npm install -g n8n ``` 3. Start the n8n server: ```bash n8n ``` 4. Access the n8n interface by navigating to `http://localhost:5678` in your web browser[^4]. #### Creating Your First Workflow 1. **Define the Trigger**: Choose a trigger node, such as a "Webhook" or "Cron" node, to initiate the workflow. 2. **Add Nodes**: Add nodes to perform specific actions. For example, you might use an "Email" node to send emails or a "HTTP Request" node to interact with APIs. 3. **Connect Nodes**: Use the visual editor to connect nodes, defining the flow of data through the workflow. 4. **Test the Workflow**: Before deploying, test the workflow to ensure all nodes function correctly and the desired outcome is achieved[^5]. #### Example Workflow Below is an example of a simple workflow that sends an email notification when a new file is uploaded to Google Drive: ```json { "nodes": [ { "parameters": { "resource": "file", "operation": "new" }, "name": "Google Drive Trigger", "type": "n8n-nodes-base.googleDriveTrigger" }, { "parameters": { "to": "example@example.com", "subject": "New File Uploaded", "body": "A new file has been uploaded to your Google Drive." }, "name": "Send Email", "type": "n8n-nodes-base.emailSend" } ], "connections": { "Google Drive Trigger": { "main": [ [ "Send Email" ] ] } } } ``` This JSON configuration defines a workflow where a new file upload in Google Drive triggers an email notification[^6]. #### Advanced Usage For more advanced use cases, consider the following: - **Custom Nodes**: Develop custom nodes tailored to specific business requirements or unique integrations. - **Credential Management**: Securely manage credentials for different services using n8n's built-in credential management system. - **Execution History**: Monitor past executions of workflows to troubleshoot issues or analyze performance[^7].
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