Nice one! Running multiple Strapi projects under the same domain with subdirectories is totally feasible, but it needs a few key tweaks—adjusting each Strapi instance's settings and setting up a reverse proxy to route requests properly. Let’s walk through this step by step:

First, navigate to your second Strapi project folder on the server. You need to adjust two critical settings to avoid conflicts with your first project:

• Change the listening port: Open config/server.js (or config/env/production/server.js if you’re running in production mode) and set a unique port (your first project is likely using 1337, so let’s use 1338 here):

  module.exports = ({ env }) => ({
    host: env('HOST', '0.0.0.0'),
    port: env('PORT', 1338), // Unique port for the second project
    app: {
      keys: env.array('APP_KEYS'),
    },
  });
  

• Set the public base URL: Still in config/server.js, add a url field pointing to your subdirectory. This tells Strapi to prefix all its internal routes, API endpoints, and admin UI paths with /second-project:

  module.exports = ({ env }) => ({
    host: env('HOST', '0.0.0.0'),
    port: env('PORT', 1338),
    url: env('PUBLIC_URL', 'https://mysite/second-project'), // Match your subdirectory URL
    app: {
      keys: env.array('APP_KEYS'),
    },
  });
  

  This ensures links and resources in the second project’s admin UI and API work correctly under the subdirectory.

You can’t access Strapi via a subdirectory directly using its port—you need a reverse proxy (like Nginx) to route requests from mysite/second-project to your second Strapi instance’s port (1338), while sending root path requests to your first project (1337).

Here’s how to configure Nginx:

1. Open your site’s Nginx config file (usually at /etc/nginx/sites-available/mysite).
2. Add these location blocks to your server configuration:

   server {
       listen 80;
       server_name mysite;
   
       # Route root path to your first Strapi project (port 1337)
       location / {
           proxy_pass http://localhost:1337;
           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;
       }
   
       # Route /second-project to your second Strapi project (port 1338)
       location /second-project {
           proxy_pass http://localhost:1338/second-project; # Important: include the subdirectory suffix here
           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;
   
           # Handle WebSocket connections (used by Strapi's admin UI)
           proxy_http_version 1.1;
           proxy_set_header Upgrade $http_upgrade;
           proxy_set_header Connection "upgrade";
       }
   }
   

3. Test the config for errors: sudo nginx -t
4. Restart Nginx to apply changes: sudo systemctl restart nginx

Using strapi start or npm start directly in the terminal will stop the project if you close the session. For production, use a process manager like pm2 to keep both projects running 24/7:

1. Install pm2 globally: npm install -g pm2
2. Navigate to your first Strapi project folder and start it:

   pm2 start npm --name "strapi-first" -- start
   

3. Navigate to your second Strapi project folder and start it:

   pm2 start npm --name "strapi-second" -- start
   

4. Check the running status: pm2 status
5. Save the pm2 configuration so projects auto-start on server reboot:

   pm2 save && pm2 startup
   

• Make sure both Strapi projects use separate databases (or at least separate table prefixes) to prevent data conflicts.
• If you’re using HTTPS, update your Nginx config to listen on port 443 and add your SSL certificate details.
• Test the second project by visiting https://mysite/second-project/admin—ensure the admin UI loads correctly and you can access API endpoints like https://mysite/second-project/api/posts.

内容的提问来源于stack exchange，提问作者sir-haver