uWSGI 错误 hr_instance_read(): Connection reset by peer

Question

我已经使用 uWSGI 和 NGINX 作为反向代理部署了一个烧瓶 Web 应用程序。应用程序响应时间平均约为 9 毫秒，但在一批请求之后，我的工作人员崩溃了，我在我的 uWSGI 日志中得到了这个日志：

[uwsgi-http key: backend client_addr: 172.17.0.1 client_port: 24488] hr_instance_read(): Connection reset by peer [plugins/http/http.c line 647]
[uwsgi-http key: backend client_addr: 172.17.0.1 client_port: 4059] hr_instance_read(): Connection reset by peer [plugins/http/http.c line 647]
[uwsgi-http key: backend client_addr: 172.17.0.1 client_port: 46764] hr_instance_read(): Connection reset by peer [plugins/http/http.c line 647]
[uwsgi-http key: backend client_addr: 172.17.0.1 client_port: 9951] hr_instance_read(): Connection reset by peer [plugins/http/http.c line 647]
[uwsgi-http key: backend client_addr: 172.17.0.1 client_port: 9449] hr_instance_read(): Connection reset by peer [plugins/http/http.c line 647]
[uwsgi-http key: backend client_addr: 172.17.0.1 client_port: 51355] hr_instance_read(): Connection reset by peer [plugins/http/http.c line 647]
[uwsgi-http key: backend client_addr: 172.17.0.1 client_port: 39565] hr_instance_read(): Connection reset by peer [plugins/http/http.c line 647]
[uwsgi-http key: backend client_addr: 172.17.0.1 client_port: 63142] hr_instance_read(): Connection reset by peer [plugins/http/http.c line 647]
[uwsgi-http key: backend client_addr: 172.17.0.1 client_port: 7861] hr_instance_read(): Connection reset by peer [plugins/http/http.c line 647]
[uwsgi-http key: backend client_addr: 172.17.0.1 client_port: 10165] hr_instance_read(): Connection reset by peer [plugins/http/http.c line 647]
[uwsgi-http key: backend client_addr: 172.17.0.1 client_port: 10917] hr_instance_read(): Connection reset by peer [plugins/http/http.c line 647]
[uwsgi-http key: backend client_addr: 172.17.0.1 client_port: 20392] hr_instance_read(): Connection reset by peer [plugins/http/http.c line 647]

uWSGI 配置：

[uwsgi]
http = 0.0.0.0:7000
wsgi-file = app.py
callable = app
processes = 5
lazy = true
lazy-apps = true
buffer-size = 16384
logto = /root/logs/data-gathering.log

环境：

uWSGI==2.0.17
Flask==0.12.2

Answer 1

我在使用 uWSGI 原生 HTTP 服务器时遇到了同样的问题。配置如下：

https = :8443,app.crt,app.key,HIGH,!ca.crt
http-workers = 2
http-buffer-size = 32768

; applications
mount = /=/app.py
mount = /asq=/asq.py

; process managment
master = true
vacuum = true
single-interpreter = true
pidfile = /tmp/uwsgi.pid
enable-threads = true
cpu-affinity = 1
processes = 4
threads = 2
offload-threads = 1

close-on-exec = true
buffer-size = 32768

我总是得到：

[uwsgi-http key: 192.168.1.200:8443 client_addr: 192.168.1.200 client_port: 20179] hr_instance_read(): Connection reset by peer [plugins/http/http.c line 647]

在我的例子中，我执行的是 POST 请求而不是消耗正文。因此，在将post-buffering = 1 添加到配置后，一切都开始正常工作了。没有标志的相同结果，只读取 POST 数据。

来自 uWSGI 的“须知”：

如果 HTTP 请求有正文（例如由 表格），您必须在您的应用程序中阅读（使用）它。如果你这样做 不这样做，与您的网络服务器的通信套接字可能是 重创。如果你很懒，你可以使用后缓冲选项 会自动为你读取数据。对于机架应用程序，这是 自动启用。