Nginx 502上传文件时网关错误 [英] Nginx 502 Bad Gateway when uploading files
本文介绍了Nginx 502上传文件时网关错误的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
尝试将文件上载到基于node.js的Web应用时出现以下错误:
2014/05/20 04:30:20 [error] 31070#0: *5 upstream prematurely closed connection while reading response header from upstream, client: ... [clipped]
我在这里使用的是前端代理:
upstream app_mywebsite {
server 127.0.0.1:3000;
}
server {
listen 0.0.0.0:80;
server_name {{ MY IP}} mywebsite;
access_log /var/log/nginx/mywebsite.log;
# pass the request to the node.js server with the correct headers and much more can be added, see nginx config options
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_set_header X-NginX-Proxy true;
proxy_pass http://app_mywebsite;
proxy_redirect off;
# web socket support
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
}
}
这是我的nginx.conf文件:
user www-data;
worker_processes 4;
pid /run/nginx.pid;
events {
worker_connections 2048;
multi_accept on;
}
http {
##
# Basic Settings
##
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 20;
types_hash_max_size 2048;
# server_tokens off;
# server_names_hash_bucket_size 64;
# server_name_in_redirect off;
include /etc/nginx/mime.types;
# default_type application/octet-stream;
default_type text/html;
charset UTF-8;
##
# Logging Settings
##
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
##
# Gzip Settings
##
gzip on;
gzip_disable "msie6";
gzip_vary on;
gzip_proxied any;
gzip_min_length 256;
gzip_comp_level 5;
gzip_buffers 16 8k;
gzip_http_version 1.1;
gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
##
# nginx-naxsi config
##
# Uncomment it if you installed nginx-naxsi
##
#include /etc/nginx/naxsi_core.rules;
##
# nginx-passenger config
##
# Uncomment it if you installed nginx-passenger
##
#passenger_root /usr;
#passenger_ruby /usr/bin/ruby;
##
# Virtual Host Configs
##
include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;
}
关于如何更好地调试它有什么想法吗?我发现的东西并没有真正起作用(例如,从我的PROXY_PASS中删除尾随的劈开
推荐答案
所以最终我在KeepAlive中将20
更改为64
,现在它似乎可以很好地处理大文件。令人遗憾的是,我从头重新编写了我正在使用的图像上传库node-imager
,但至少我从中学到了一些东西。
server {
location / {
keepalive 64
}
}
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