Self-Hosting n8n on Mac: Automation Made Simple with Docker

n8n Deployment

Workflow automation is a critical factor in maximizing engineering efficiency. In this post, we will cover the process of building an n8n server on a Mac environment using Docker container technology to ensure infrastructure flexibility.

1. Core Concepts

1.1 What is Docker?

Docker is an open-source platform that manages applications in virtualized environments called Containers.

1.2 What is n8n?

n8n is a node-based low-code workflow automation tool. It allows you to design complex business logic by visually connecting various APIs and services.

2. Deployment Process

Step 1: Install Docker Desktop

Before deploying containers on Mac, Docker Desktop must be installed.

  • Download the installer from the Official Docker Website.
  • Ensure the Docker whale icon is active in the menu bar after installation.

Step 2: Container Deployment and Execution

Open the Terminal and enter the following command to run the n8n container.

docker run -it --rm --name n8n -p 5678:5678 -v n8n_data:/home/node/.n8n docker.n8n.io/n8nio/n8n

Step 3: Accessing the Service

Once the container is successfully deployed, you can access the service via your local web browser.

URL: http://localhost:5678

3. Troubleshooting: Port & Access Issues

💡 Connection Refused? Check these 2 settings:

1. Terminal Command Check (Port Mapping)
If the -p 5678:5678 option is missing, the host cannot communicate with the container. If port 5678 is already in use, try changing it to: -p 8080:5678 and access via localhost:8080.

2. Docker Desktop Dashboard Check
Open Docker Desktop, go to the 'Containers' tab, and find your n8n container. Check the 'Port(s)' column. If no port is assigned, you must stop the container and re-run it with the correct -p flag. Also, ensure the status is 'Running' (Green icon).

Pro Tip: If localhost still doesn't work, try using http://127.0.0.1:5678. Sometimes local DNS resolution can cause issues.

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