feat: add PM2 ecosystem configuration and documentation for Web GUI deployment

vsphere_backup/README.md

@@ -23,3 +23,35 @@ Notes & caveats
 - The script attempts to use `zstd -19` if available; otherwise it falls back to Python `zstandard`.
 - SSL verification is disabled with `--no-verify-ssl` for convenience with self-signed vCenter/ESXi certs.
 - Test carefully in dev before using in production. This is a minimal DIY backup tool and does not replace a full backup product.
+
+## Web GUI
+
+A Flask-based web interface to manage your backups, schedules, and NFS mounts.
+
+### Running with PM2 (Recommended for Linux production)
+
+PM2 natively supports Python applications and can keep the server running across restarts.
+
+1. **Install PM2** (requires Node.js):
+   ```bash
+   npm install -g pm2
+   ```
+
+2. **Start the Web GUI**:
+   Using the provided `ecosystem.config.js`:
+   ```bash
+   pm2 start ecosystem.config.js
+   ```
+
+   *(Optional)* If you are running inside a Python virtual environment (e.g. `venv`), edit `ecosystem.config.js` to uncomment and point the `interpreter` to your venv's python executable:
+   ```javascript
+   interpreter: './venv/bin/python3'
+   ```
+
+3. **Useful PM2 Commands**:
+   - Status: `pm2 status`
+   - Logs: `pm2 logs vsphere-backup-gui`
+   - Restart: `pm2 restart vsphere-backup-gui`
+   - Stop: `pm2 stop vsphere-backup-gui`
+   - Setup auto-start on server boot: `pm2 startup` and then run the command it outputs, followed by `pm2 save`.
+

vsphere_backup/ecosystem.config.js

@@ -0,0 +1,23 @@
+module.exports = {
+  apps: [
+    {
+      name: 'vsphere-backup-gui',
+      script: 'gui_app.py',
+      // If you are using a virtual environment (recommended), set the interpreter to:
+      // interpreter: './venv/bin/python3',
+      interpreter: 'python3',
+      cwd: './',
+      instances: 1,
+      autorestart: true,
+      watch: false,
+      max_memory_restart: '500M',
+      env: {
+        PORT: '5000',
+        SECRET_KEY: 'vsphere-backup-production-key-change-this'
+      },
+      error_file: './logs/pm2_err.log',
+      out_file: './logs/pm2_out.log',
+      log_date_format: 'YYYY-MM-DD HH:mm:ss'
+    }
+  ]
+};