django nginx 502 Bad Gateway

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按照这位大佬部署nginx 和uwsgi其实是没有问题。
但我经常报错
错误日志：

upstream prematurely closed connection while reading response header from upstream

检查nginx.conf的配置信息

worker_processes  1;
events {
worker_connections  1024;
}
http {
include       mime.types;
default_type  application/octet-stream;
sendfile        on;
server {
listen       80;
server_name  120.25.151.138;
charset utf-8;
location / {
include uwsgi_params;
uwsgi_pass 127.0.0.1:8997;
uwsgi_param UWSGI_SCRIPT HouseSellSystem4.wsgi;
uwsgi_param UWSGI_CHDIR /usr/local/Python-3.6.6/data/wwwroot/HouseSellSystem4/;
}
location /static/ {
alias /usr/local/Python-3.6.6/data/wwwroot/HouseSellSystem4/static/;
}
}
}

再检查uwsgi信息

<uwsgi>
<socket>127.0.0.1:8997</socket><!-- 内部端口，自定义 -->
<chdir>/usr/local/Python-3.6.6/data/wwwroot/HouseSellSystem4/</chdir><!-- 项目路径 -->
<module>HouseSellSystem4.wsgi</module>
<processes>4</processes> <!-- 进程数 -->
<daemonize>uwsgi.log</daemonize><!-- 日志文件 -->
</uwsgi>

解决方法

先用killall uwsgi ，再重启uwsgi -x HouseSellSystem4.xml然后重启nginx