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解决 Nginx 在宝塔面板中启动失败的问题分析与解决方案

发布：HelloJq 时间：2025-06-12

  • 24年4月15日
  • 0
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[记录]解决 Nginx 在宝塔面板中启动失败的问题分析与解决方案

问题描述：

在使用宝塔面板管理 Nginx 服务过程中，遇到了服务突然停止的问题。日志显示大量的 close() channel failed (9: Bad file descriptor) 以及 worker process exited on signal 9 错误。此外，还出现了 fork() failed while spawning "worker process" (12: Cannot allocate memory)，表明系统内存不足，无法创建新的工作进程。 

		
    
			
			
  1. 
				2024/04/14 03:38:04 [alert] 2341#0: close() channel failed (9: Bad file descriptor)
			
    2. 

			
  2. 
				2024/04/14 03:38:04 [alert] 2341#0: close() channel failed (9: Bad file descriptor)
			
    3. 

			
  3. 
				2024/04/14 03:38:04 [alert] 6197#0: close() channel failed (9: Bad file descriptor)
			
    4. 

			
  4. 
				2024/04/14 03:38:04 [alert] 6193#0: close() channel failed (9: Bad file descriptor)
			
    5. 

			
  5. 
				2024/04/14 03:38:04 [alert] 6199#0: close() channel failed (9: Bad file descriptor)
			
    6. 

			
  6. 
				2024/04/14 03:38:04 [alert] 6192#0: close() channel failed (9: Bad file descriptor)
			
    7. 

			
  7. 
				2024/04/14 03:38:02 [alert] 6238#0: close() channel failed (9: Bad file descriptor)
			
    8. 

			
  8. 
				2024/04/14 03:38:04 [alert] 6239#0: close() channel failed (9: Bad file descriptor)
			
    9. 

			
  9. 
				2024/04/14 03:38:05 [alert] 6238#0: close() channel failed (9: Bad file descriptor)
			
    10. 

			
  10. 
				2024/04/14 03:38:05 [alert] 6239#0: close() channel failed (9: Bad file descriptor)
			
    11. 

			
  11. 
				2024/04/14 03:38:10 [alert] 2341#0: worker process 6238 exited on signal 9
			
    12. 

			
  12. 
				2024/04/14 03:38:20 [alert] 2341#0: worker process 6192 exited on signal 9
			
    13. 

			
  13. 
				2024/04/14 03:38:31 [alert] 2341#0: worker process 6197 exited on signal 9
			
    14. 

			
  14. 
				2024/04/14 03:38:40 [alert] 2341#0: worker process 6346 exited on signal 9
			
    15. 

			
  15. 
				2024/04/14 03:38:51 [alert] 2341#0: worker process 6357 exited on signal 9
			
    16. 

			
  16. 
				2024/04/14 03:39:05 [alert] 2341#0: worker process 6199 exited on signal 9
			
    17. 

			
  17. 
				2024/04/14 03:39:07 [alert] 2341#0: worker process 6311 exited on signal 9
			
    18. 

			
  18. 
				2024/04/14 03:39:14 [alert] 2341#0: worker process 6193 exited on signal 9
			
    19. 

			
  19. 
				2024/04/14 03:39:14 [alert] 2341#0: worker process 6397 exited on signal 9
			
    20. 

			
  20. 
				2024/04/14 03:39:28 [alert] 2341#0: worker process 6239 exited on signal 9
			
    21. 

			
  21. 
				2024/04/14 03:39:28 [alert] 2341#0: worker process 6417 exited on signal 9
			
    22. 

			
  22. 
				2024/04/14 03:39:31 [alert] 2341#0: worker process 6416 exited on signal 9
			
    23. 

			
  23. 
				2024/04/14 03:39:37 [alert] 2341#0: worker process 6423 exited on signal 9
			
    24. 

			
  24. 
				2024/04/14 03:39:39 [alert] 2341#0: worker process 6424 exited on signal 9
			
    25. 

			
  25. 
				2024/04/14 03:39:42 [alert] 2341#0: worker process 6429 exited on signal 9
			
    26. 

			
  26. 
				2024/04/14 03:39:44 [alert] 2341#0: worker process 6330 exited on signal 9
			
    27. 

			
  27. 
				2024/04/14 03:39:44 [alert] 2341#0: worker process 6432 exited on signal 9
			
    28. 

			
  28. 
				2024/04/14 03:39:56 [alert] 2341#0: worker process 6374 exited on signal 9
			
    29. 

			
  29. 
				2024/04/14 03:40:06 [alert] 2341#0: worker process 6486 exited on signal 9
			
    30. 

			
  30. 
				2024/04/14 03:40:20 [alert] 2341#0: worker process 6467 exited on signal 9
			
    31. 

			
  31. 
				2024/04/14 03:42:47 [alert] 2341#0: worker process 6433 exited on signal 9
			
    32. 

			
  32. 
				2024/04/14 03:43:37 [alert] 2341#0: worker process 6523 exited on signal 9
			
    33. 

			
  33. 
				2024/04/14 03:47:58 [alert] 2341#0: worker process 6538 exited on signal 9
			
    34. 

			
  34. 
				2024/04/14 03:48:07 [alert] 2341#0: worker process 6389 exited on signal 9
			
    35. 

			
  35. 
				2024/04/14 03:50:06 [alert] 2341#0: worker process 6463 exited on signal 9
			
    36. 

			
  36. 
				2024/04/14 03:52:28 [alert] 2341#0: worker process 6883 exited on signal 9
			
    37. 

			
  37. 
				2024/04/14 03:53:40 [alert] 2341#0: worker process 7715 exited on signal 9
			
    38. 

			
  38. 
				2024/04/14 03:55:57 [alert] 2341#0: worker process 6970 exited on signal 9
			
    39. 

			
  39. 
				2024/04/14 03:55:57 [alert] 2341#0: fork() failed while spawning ＂worker process＂ (12: Cannot allocate memory)
			
    40. 

			
  40. 
				2024/04/14 03:55:57 [alert] 2341#0: could not respawn worker process
			
    41. 

			
  41. 
				2024/04/14 04:48:32 [alert] 2341#0: worker process 8472 exited on signal 9
			
    42. 

			
  42. 
				2024/04/14 04:48:32 [alert] 2341#0: close() channel failed (9: Bad file descriptor)
			
    43. 

			
  43. 
				2024/04/14 04:48:32 [alert] 2341#0: close() channel failed (9: Bad file descriptor)
			
    44. 

			
  44. 
				2024/04/14 04:48:32 [alert] 2356#0: close() channel failed (9: Bad file descriptor)
			
    45. 

			
  45. 
				2024/04/14 04:48:32 [alert] 7853#0: close() channel failed (9: Bad file descriptor)
			
    46. 

			
  46. 
				2024/04/14 04:48:32 [alert] 7730#0: close() channel failed (9: Bad file descriptor)
			
    47. 

			
  47. 
				2024/04/14 04:48:32 [alert] 8237#0: close() channel failed (9: Bad file descriptor)
			
    48. 

			
  48. 
				2024/04/14 04:48:32 [alert] 6466#0: close() channel failed (9: Bad file descriptor)
			
    49. 

		


		
    
			
			
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问题原因：

  1. Nginx防火墙与加速插件冲突：安装的免费防火墙插件和网络加速工具可能与 Nginx 的某些配置或其他插件发生冲突，导致资源管理异常。

  2. 文件描述符泄露：频繁的 Bad file descriptor 错误提示可能是因为文件描述符被不当处理或泄露，导致 Nginx 无法正常关闭旧的连接或开启新的连接。

  3. 内存不足：Cannot allocate memory 错误表明 Nginx 在尝试创建新的工作进程时，因系统可用内存不足而失败。

解决方案：

  1. 卸载或禁用冲突插件：

    • 根据问题描述，首先尝试卸载或禁用 Nginx 的防火墙插件和网络加速工具，观察是否能恢复 Nginx 的正常运行。

    • 如果确定是这些插件导致的冲突，考虑查找其他兼容性更好的插件或更新这些插件到最新版本。

  2. 检查和优化内存使用：

    • 通过命令 free -m 检查当前系统的内存使用情况。

    • 如果内存确实不足，尝试增加物理内存或配置交换空间来缓解内存压力。

    • 优化 Nginx 的配置，比如调整 worker_processes 和 worker_connections，减少内存使用。

  3. 检查文件描述符限制：

    • 使用 ulimit -n 检查当前的文件描述符限制。

    • 如果数值较低，可以在系统级别增加文件描述符的限制。编辑 

      						
        
							
							
      1. 
								/etc/security/limits.conf
							
        2.

      文件，增加如下配置： 

      						
        
							
							
      1. 
								markdownCopy code* soft nofile 65535
							
        2. 

							
      2. 
								* hard nofile 65535
							
        3.

    • 重新启动宝塔面板和 Nginx 服务，以应用更改。

  4. 查看详细日志：

    • 检查 Nginx 的错误日志（通常位于 /var/log/nginx/error.log），获取更多关于错误的具体信息。

    • 根据日志中的详细错误描述，进一步分析和解决问题。

  5. 重新启动 Nginx：

    • 在做出上述更改后，尝试重新启动 Nginx 服务，检查服务是否能够正常运行。