Update README

verify_nginx.py

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+"""Verify Nginx config: compare sites-enabled/gfil vs sites-available/gfil"""
+import paramiko
+
+JD_HOST = "111.228.37.165"
+JD_USER = "root"
+JD_PASS = "Liudecai110"
+
+LAB_HOST = "216.144.233.14"
+LAB_USER = "root"
+LAB_PASS = "Kt9V72Tx2c48ChikKU"
+
+jd = paramiko.SSHClient()
+jd.set_missing_host_key_policy(paramiko.AutoAddPolicy())
+jd.connect(JD_HOST, port=22, username=JD_USER, password=JD_PASS,
+           timeout=20, banner_timeout=60, allow_agent=False, look_for_keys=False)
+
+cmd = f"""sshpass -p '{LAB_PASS}' ssh -o StrictHostKeyChecking=no {LAB_USER}@{LAB_HOST} '
+echo "=== Diff: sites-enabled vs sites-available ==="
+diff /etc/nginx/sites-enabled/gfil /etc/nginx/sites-available/gfil && echo "IDENTICAL" || echo "DIFFERENT"
+
+echo ""
+echo "=== sites-available/gfil (original, date) ==="
+ls -la /etc/nginx/sites-available/gfil
+stat /etc/nginx/sites-available/gfil | grep -i modify
+
+echo ""
+echo "=== sites-enabled/gfil (current, date) ==="
+ls -la /etc/nginx/sites-enabled/gfil
+stat /etc/nginx/sites-enabled/gfil | grep -i modify
+
+echo ""
+echo "=== Full current config ==="
+cat /etc/nginx/sites-enabled/gfil
+
+echo ""
+echo "=== Nginx status ==="
+nginx -t 2>&1
+systemctl status nginx --no-pager | head -5
+
+echo ""
+echo "=== Site response ==="
+curl -s -o /dev/null -w "HTTP_code:%{{http_code}} Size:%{{size_download}}" http://localhost/ 2>/dev/null
+'"""
+stdin, stdout, stderr = jd.exec_command(cmd, timeout=30)
+print(stdout.read().decode())
+jd.close()