go system_error ai_generated partial

accept tcp [::1]:8080: accept4: 系统中打开的文件过多

accept tcp [::1]:8080: accept4: too many open files in system

ID: go/too-many-files-open-in-docker

其他格式: JSON · Markdown 中文 · English
80%修复率
82%置信度
1证据数
2024-01-20首次发现

版本兼容性

版本状态引入弃用备注
Go 1.20 active — — —
Go 1.21 active — — —
Go 1.22 active — — —

根因分析

系统范围的文件描述符限制或进程限制已被超出，通常由于 Go 服务器中的文件句柄泄漏或高并发导致。

English

The system-wide file descriptor limit or per-process limit has been exceeded, often due to leaked file handles or high concurrency in a Go server.

generic

官方文档

https://go.dev/doc/effective_go#leaks

解决方案

  1. Increase system-wide file descriptor limit: edit /etc/sysctl.conf with 'fs.file-max = 100000' and apply with sysctl -p.
  2. Check for leaked file handles using lsof -p <pid> and ensure all resources (http.Response.Body, os.File) are properly closed in all code paths, using defer for cleanup.
  3. Use a connection pool with limits (e.g., http.Transport.MaxIdleConnsPerHost) to prevent excessive file descriptor usage.

无效尝试

常见但无效的做法:

  1. 90% 失败

    Temporary fix; the error will reoccur once file descriptors accumulate again.

  2. 60% 失败

    May not affect system-wide limits; also does not address the root cause of file descriptor leaks.

  3. 50% 失败

    If close() fails silently, file descriptors may still leak.