connect() to unix:/home/tmp/myproject.sock failed (2: No such file or directory)

环境配置

操作系统: Ubuntu 16.04
反向代理服务器: nginx: 1.16.0
程序服务器: Gunicorn: 19.9.0
Web程序: 基于Django的CMS框架Wagtail

出错原因

Gunicorn服务器没有sockets文件所在目录的读写权限

解决

访问网站出现502 bad gateway
查看nginx error log, 发现套接字无法连接
检查Gunicorn服务器是否正常启动, 检查Sockets是否正常
systemctl status gunicorn.service
检查nginx配置文件是否正常
检查Sockets文件所在目录权限是否正确
发现Gunicorn的用户和组是song和www-data, 而Sockets文件所在目录权限是root和root
给文件目录授权
sudo chown song:www-data /home/tmp/

Sockets

Sockets(套接字)是一种特殊的文件类型, 类似于TCP/IP套接字的双向管道, 提供受文件系统访问控制保护的进程间网络通信。
Unix域套接字的特殊之处在于，它们的地址不是IP地址和端口号，而是文件名。这允许其他不了解网络的应用程序打开文件并读或写，数据被发送到服务器而不是磁盘.
nginx服务器监听并接受来自客户机的连接，然后可以通过sock文件与Gunicorn程序服务器通信。
我们不需要去创建Sockets文件, 服务器程序自己会创建, 它只是代表服务器之间交换信息的地址

参考

网站文件
stackoverflow 解决

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connect() to unix:/home/tmp/myproject.sock failed (2: No such file or directory)

环境配置

出错原因

解决

Sockets

参考

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