“.sock”不存在错误；连接（）错误

Posted 2023-02-24

【中文标题】“.sock”不存在错误；连接（）错误

【英文标题】：".sock" does not exist error; connect() error

【发布时间】：2018-10-03 04:44:05

【问题描述】：

我正在尝试在 Linode 上的虚拟 Ubuntu 14.04 机器上设置 Mezzanine/Django 项目，但尝试在浏览器中导航到我的网站时出现“502 Bad Gateway error”。

我正在按照此处的说明进行操作：https://linode.com/docs/web-servers/nginx/deploy-django-applications-using-uwsgi-and-nginx-on-ubuntu-14-04。

我在/home/django/ 中运行了git clone，所以所有内容都在一个名为FOLDER 的文件夹中。

/home/django/ 有这些目录：Env/ 和 FOLDER/。

这应该可以让您了解FOLDER/ 树的样子：

FOLDER
- product_blog
-- product_blog
--- settings.py
--- wsgi.py
-- manage.py

在我的settings.py 中，我有：

ALLOWED_HOSTS = ["PUBLIC IP OF MY LINODE UBUNTU INSTANCE HERE"]

wsgi.py 有这个：

"""
WSGI config for product_blog project.

It exposes the WSGI callable as a module-level variable named ``application``.

For more information on this file, see
https://docs.djangoproject.com/en/1.10/howto/deployment/wsgi/
"""

import os

from django.core.wsgi import get_wsgi_application
from mezzanine.utils.conf import real_project_name

os.environ.setdefault("DJANGO_SETTINGS_MODULE",
                      "%s.settings" % real_project_name("product_blog"))

application = get_wsgi_application()

/etc/uwsgi/sites/product_blog.ini 有这个：

[uwsgi]
project = product_blog
base = /home/django

chdir = %(base)/%(project)
home = %(base)/Env/%(project)
module = %(project).wsgi:application

master = true
processes = 2

socket = %(base)/%(project)/%(project).sock
chmod-socket = 664
vacuum = true

/etc/init/uwsgi.conf 有这个：

description "uWSGI"
start on runlevel [2345]
stop on runlevel [06]
respawn

env UWSGI=/usr/local/bin/uwsgi
env LOGTO=/var/log/uwsgi.log

exec $UWSGI --master --emperor /etc/uwsgi/sites --die-on-term --uid django --gid www-data --logto $LOGTO

/etc/nginx/sites-available/product_blog 有这个：

server 
    listen 80;
    server_name mydomain.com;

    location = /favicon.ico  access_log off; log_not_found off; 
    location /static/ 
        root /home/django/FOLDER;
    

    location / 
        include         uwsgi_params;
        uwsgi_pass      unix:/home/django/FOLDER/product_blog/product_blog.sock;
    

当我转到 Linode 框的 IP 地址时，我看到 502 Bad Gateway 错误。

/var/log/uwsgi.log 有这个...

*** has_emperor mode detected (fd: 6) ***
[uWSGI] getting INI configuration from product_blog.ini
*** Starting uWSGI 2.0.17 (64bit) on [Sun Apr 22 17:17:56 2018] ***
compiled with version: 4.8.4 on 22 April 2018 19:53:45
os: Linux-4.15.12-x86_64-linode105 #1 SMP Thu Mar 22 02:13:40 UTC 2018
nodename: ubuntu-linode
machine: x86_64
clock source: unix
detected number of CPU cores: 1
current working directory: /etc/uwsgi/sites
detected binary path: /usr/local/bin/uwsgi
!!! no internal routing support, rebuild with pcre support !!!
chdir() to /home/django/product_blog
chdir(): No such file or directory [core/uwsgi.c line 2629]
chdir(): No such file or directory [core/uwsgi.c line 1644]
Sun Apr 22 17:17:56 2018 - [emperor] curse the uwsgi instance product_blog.ini (pid: 4238)
Sun Apr 22 17:17:59 2018 - [emperor] removed uwsgi instance product_blog.ini

/var/log/nginx/error.log 有这个（识别信息已删除）：

2018/04/22 17:18:14 [crit] 3953#0: *9 connect() to unix:/home/django/FOLDER/product_blog/product_blog.sock failed (2: No such file or directory) while connecting to upstream, client: 73.49.35.42, server: mydomain.com, request: "GET / HTTP/1.1", upstream: "uwsgi://unix:/home/django/FOLDER/product_blog/product_blog.sock:", host: "ADDRESS TO LINODE BOX"

product_blog.sock 似乎应该在我的目录中的某个位置，但它不存在。如何修复 502 错误，以便我可以将浏览器导航到 Linode 框的地址并查看正常工作的网站？

【参考方案1】：

socket文件应该是由uWSGI创建的。但是 uWSGI 日志告诉您它无法启动，因为它无法 cd 到您在 product_blog.ini 中指定的目录，/home/django/product_blog。

我不知道FOLDER 是否是占位符，但无论如何您似乎没有将它包含在该路径中。我想应该是：

chdir = %(base)/FOLDER/%(project)
...
socket = %(base)/FOLDER/%(project)/%(project).sock