Nginx 502 error (django+nginx, not php-fmp)

This article mainly introduces the Nginx 502 error (django nginx, not php-fmp). Now I share it with you and give it a reference. Let’s take a look together

Many explanations for Nginx errors on the Internet are that the relevant modules are not running, so first use the ps command to check whether the module is turned on. For example, the most common use is php-fmp in php nginx. module, if it is closed, run the command:

service php-fpm restart && service nginx restart

But I am using django nginx, which has nothing to do with php, so I need to check the nginx error log.

The log location of nginx is in the nginx configuration file. The default configuration file location is: /etc/nginx/nginx.conf, so run:

vim /etc/nginx/nginx.conf

in the curly braces of http Found in:

access_log /var/log/nginx/access.log;

error_log /var/log/nginx/error.log ;

It indicates the log location of normal connection/var/log/nginx/access.log The log file location of abnormal connection /var/log/nginx/error.log

Locate the log file location of the abnormal connection, just:

vim /var/log/nginx/error.log

You can see:

2018/04/17 13:05:39 [error] 9680#9680: *1 connect() failed (111: Connection refused) while connecting to upstream, client: XXXX, server: XXXX, request: "GET / HTTP/1.1", upstream: "uwsgi://127.0.0.1:8000", host : "XXXX"

This is connected to uwsgi, so uwsgi needs to be turned on first, run:

##uwsgi -i uwsgi.ini &

Here uwsgi.ini is my own uwsgi configuration file. I need to run the command according to your actual situation. You can refer to http://uwsgi-docs-cn.readthedocs.io/zh_CN/ latest/WSGIquickstart.html Choose your own uwsgi command.

Then you can use nginx normally and no 502 error will be displayed.

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