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Using Attu Behind a Proxy with Nginx

This document provides instructions on how to configure Nginx to proxy requests to Attu, a web-based GUI for Milvus.

Prerequisites

  1. Nginx: Ensure Nginx is installed on your server. You can install it using your package manager:
sudo apt-get install nginx # For Debian/Ubuntu
sudo yum install nginx # For CentOS/RHEL
brew install nginx # For Mac OS
  1. Attu:
docker run -p 3000:3000 -e HOST_URL=http://localhost:8080/attu zilliz/attu:v2.4.4

The HOST_URL environment variable specifies the URL where Attu is hosted. In this case, it is set to http://localhost:8080/attu/.

Nginx Configuration

  1. Open your Nginx configuration file for editing. This is typically located at /etc/nginx/nginx.conf or in the /etc/nginx/sites-available/ directory.

  2. Add the following server block configuration:

server {
  listen 8080;
  server_name localhost;

  location /attu/ {
    proxy_pass http://localhost:3000/;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "Upgrade";
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
  }

  location /socket.io/ {
    proxy_pass http://localhost:3000/socket.io/;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "Upgrade";
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
  }
}

This configuration sets up a proxy for Attu running on localhost:3000 and maps it to localhost:8080/attu/, directing all requests to the specified location.

  1. Save the configuration file and exit the editor.

Restart Nginx

After updating the Nginx configuration, restart the Nginx service to apply the changes:

sudo systemctl restart nginx # for Debian/Ubuntu
sudo systemctl restart nginx # for CentOS/RHEL
brew services restart nginx # for Mac OS

Access Attu

You can now access Attu through the proxy at http://localhost:8080/attu/.

Troubleshooting

  • Nginx Fails to Start: Check the Nginx error logs located at /var/log/nginx/error.log for any configuration errors.
  • Attu Not Accessible: Ensure that Attu is running on the specified port and that there are no firewall rules blocking access.

Conclusion

By following these steps, you can configure Nginx to proxy requests to Attu, allowing you to use Attu behind a proxy server. This setup is useful for environments where direct access to Attu is restricted or when you want to centralize access through a single entry point.

For further assistance, refer to the official Nginx documentation and Attu documentation.

Feel free to modify this document according to your specific requirements.