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R 管道工 API : Prevent "504 Gateway Time-out"

转载 作者:行者123 更新时间:2023-12-05 04:10:22 25 4
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我已经使用 plumber 编写并部署了一个 R API到 instructions 中的 Digital Ocean 液滴.

我在 .json 数据中发布并期待返回 .json 数据。为此,我使用命令行中的 curl 命令,例如:

curl --data @data/data.json http://[API ADDRESS] > results/output.json

当我发布一个小数据集时,这工作正常,但随着数据集变大,我开始收到如下 HTTP 错误:

<html>
<head><title>504 Gateway Time-out</title></head>
<body bgcolor="white">
<center><h1>504 Gateway Time-out</h1></center>
<hr><center>nginx/1.10.0 (Ubuntu)</center>
</body>
</html>

我尝试编辑 /etc/nginx/nginx.conf 以允许更长的超时和更大的文件,但仍然没有成功。 nginx.conf文件如下:

    user www-data;
worker_processes auto;
pid /run/nginx.pid;

events {
worker_connections 768;
# multi_accept on;
}

http {

##
# Basic Settings
##

sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 3000;
types_hash_max_size 2048;
# server_tokens off;

##
# Allow for longer jobs
##

client_header_timeout 3000;
client_body_timeout 3000;
fastcgi_read_timeout 3000;
client_max_body_size 100M;
fastcgi_buffers 8 128k;
fastcgi_buffer_size 128k;

# server_names_hash_bucket_size 64;
# server_name_in_redirect off;

include /etc/nginx/mime.types;
default_type application/octet-stream;

##
# SSL Settings
##

ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
ssl_prefer_server_ciphers on;

##
# 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_comp_level 6;
# gzip_buffers 16 8k;
# gzip_http_version 1.1;
# gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

##
# Virtual Host Configs
##

include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;

}

然后我使用 sudo service nginx restart 重新启动 nginx 服务器,但仍然出现超时错误。

/var/log/nginx/error.log行内容如下:

*4 upstream timed out (110: Connection timed out) while reading response header from upstream, client: [MY IP], server: _, request: "POST [API]", upstream: "http://127.0.0.1:8000/[API]", host: "[HOST ADDRESS]"

如果您能就水管工的工作原理提供任何帮助或提示,那将非常有用。非常感谢!

最佳答案

我现在已通过将以下行添加到 /etc/nginx/sites-available/[my site]/mysite.conf

来解决此问题
location {
# time out settings
proxy_connect_timeout 3000s;
proxy_send_timeout 3000;
proxy_read_timeout 3000;
}

我还在 nginx.conf 中注释掉了 keepalive_timout 标志,并在 this article 中指定了 http 版本。但我不确定到底是什么造成了差异。如果我发现我会更新答案。

关于R 管道工 API : Prevent "504 Gateway Time-out",我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/44628829/

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