Gunicorn 无法以 code=exited, status=203/EXEC 启动答案

【问题标题】：Gunicorn is failing to start with code=exited, status=203/EXECGunicorn 无法以 code=exited, status=203/EXEC 启动
【发布时间】：2020-12-18 21:34:11
【问题描述】：

Gunicorn 在使用 0.0.0.0:8000 进行测试时可以正常工作，但在以下生产版本中失败。尝试将 user:group 切换到 myproject:myproject, root:nginx, myproject:nginx 没有任何效果

sudo systemctl status gunicorn

● gunicorn.service - gunicorn daemon
    Loaded: loaded (/etc/systemd/system/gunicorn.service; enabled; vendor preset: disabled)
    Active: failed (Result: exit-code) since Sun 2020-08-30 08:49:57 PDT; 5s ago
    Process: 5576 ExecStart=/var/www/myproject/public_py/env/bin/gunicorn --access-logfile - --workers 3 --bind unix:/var/www/myproject/public_py/myproject.sock myproject.wsgi:application (code=exited, status=203/EXEC)
    Main PID: 5576 (code=exited, status=203/EXEC)

Aug 30 08:49:57 myprojecthost systemd[1]: Started gunicorn daemon.
Aug 30 08:49:57 myprojecthost systemd[1]: gunicorn.service: Main process exited, code=exited, status=203/EXEC
Aug 30 08:49:57 myprojecthost systemd[1]: gunicorn.service: Failed with result 'exit-code'.

gunicorn.service

[Unit]
Description=gunicorn daemon
After=network.target

[Service]
User=root
Group=nginx
WorkingDirectory=/var/www/myproject/public_py
ExecStart=/var/www/myproject/public_py/env/bin/gunicorn --access-logfile - --workers 3 --bind unix:/var/www/myproject/public_py/myproject.sock myproject.wsgi:application

[Install]
WantedBy=multi-user.target

项目位于/var/www/myproject

cat /var/log/nginx/error.log

[crit] 1198#0: *51 connect() to unix:/var/www/myproject/public_py/myproject.sock failed (2: No such file or directory) while connecting to upstream, client: xx.xxx.xx.xxx, server: myproject.com, request: "GET / HTTP/1.1", upstream: "http://unix:/var/www/myproject/public_py/myproject.sock:/", host: "myproject.com"

stat /var/www/myproject/public_py/env/bin/gunicorn

  File: /var/www/myproject/public_py/env/bin/gunicorn
  Size: 243         Blocks: 8          IO Block: 4096   regular file
Device: fd01h/64769d    Inode: 1066021     Links: 1
Access: (0775/-rwxrwxr-x)  Uid: (    0/    root)   Gid: (  984/   nginx)
Context: unconfined_u:object_r:httpd_sys_content_t:s0
Access: 2020-08-30 08:07:44.939754370 -0700
Modify: 2020-08-29 18:16:27.280494281 -0700
Change: 2020-08-30 08:46:09.047708570 -0700

【问题讨论】：

标签： python-3.x django nginx gunicorn

【解决方案1】：

解决方案：

nginx 被 SElinux 阻止，以解决对许可的更改。

【讨论】：