nginx config_error ai_generated true

客户端请求体大小超过缓冲区限制

client intended to send too large body: 1048577 bytes exceeds client_body_buffer_size

ID: nginx/client-body-buffer-size-exceeded

其他格式: JSON · Markdown 中文 · English
90%修复率
84%置信度
1证据数
2023-09-05首次发现

版本兼容性

版本状态引入弃用备注
nginx 1.18.0 active — — —
nginx 1.20.2 active — — —
nginx 1.24.0 active — — —

根因分析

请求体大小超过client_body_buffer_size指令限制，导致nginx拒绝或缓冲到磁盘；如果同时超过client_body_max_size，nginx返回413。

English

The request body size exceeds the client_body_buffer_size directive, causing nginx to reject or buffer to disk; if client_body_max_size is also exceeded, nginx returns 413.

generic

官方文档

https://nginx.org/en/docs/http/ngx_http_core_module.html#client_body_buffer_size

解决方案

  1. Increase client_body_buffer_size in http, server, or location block:
client_body_buffer_size 2m;
This allows larger bodies to be buffered in memory.
  2. If the body size is expected to be large, also increase client_body_max_size:
client_body_max_size 10m;
client_body_buffer_size 2m;
  3. For specific endpoints, set a higher buffer size only for that location:
location /upload {
    client_body_buffer_size 4m;
    client_body_max_size 100m;
}

无效尝试

常见但无效的做法:

  1. 50% 失败

    Setting to 0 disables buffering entirely, which may cause nginx to use temporary files inefficiently and slow down.

  2. 70% 失败

    The error specifically mentions client_body_buffer_size; increasing max size alone does not resolve the buffer limit warning.

  3. 60% 失败

    This may cause nginx to forward the body immediately but can lead to upstream timeouts or resource issues.