Systemctl - failed at step stdout spawning gunicorn: no such file or directory

0.前言

首先看到这个错误，本身就很有误导性: gunicorn: No such file or directory

root@doupoa:~# systemctl status admin.service
× admin.service - gunicorn daemon for my web application
     Loaded: loaded (/etc/systemd/system/admin.service; disabled; preset: enabled)
     Active: failed (Result: exit-code) since Wed 2025-08-20 09:32:08 CST; 1s ago
   Duration: 783us
    Process: 29237 ExecStart=/home/adminServer/.venv/bin/gunicorn -w 5 -k uvicorn.workers.UvicornWorker --access-logfile /home/adminServer/logs/gunicorn_access.log --error-l>
   Main PID: 29237 (code=exited, status=209/STDOUT)
        CPU: 606us

Aug 20 09:32:08 doupoa (gunicorn)[29237]: admini.service: Failed at step STDOUT spawning /home/adminServer/.venv/bin/gunicorn: No such file or directory
Aug 20 09:32:08 doupoa systemd[1]: Started admini.service - gunicorn daemon for my web application.
Aug 20 09:32:08 doupoa systemd[1]: admin.service: Main process exited, code=exited, status=209/STDOUT
Aug 20 09:32:08 doupoa systemd[1]: adminiLucky.service: Failed with result 'exit-code'.

然后就会开始无止境的：

... -> 查看目录 -> 有这文件啊？ -> 重启查看状态 -> 怎么还是找不到？ -> 查看目录 -> ...

1.问题解决

先来看一下 admin.service 文件，一切都很正常

[Unit]
Description=gunicorn daemon for my web application
After=network.target
RequiresMountsFor=/home/adminServer/.venv/bin/

[Service]
User=root
Group=root
WorkingDirectory=/home/adminServer
ExecStart=/home/adminServer/.venv/bin/gunicorn -w 5 -k uvicorn.workers.UvicornWorker --access-logfile '/home/adminServer/logs/gunicorn_access.log' --error-logfile '/home/adminServer/logs/gunicorn_error.log' main:app
StandardOutput=append:/home/adminServer/logs/gunicorn.out
StandardError=append:/home/adminServer/logs/gunicorn.err

[Install]
WantedBy=multi-user.target

可以看到我们指定了StandardOutput 和 StandardError 这两个日志输出目录，再结合 systemctl status 的错误信息来看，可以发现一行： Failed at step STDOUT spawning

STDOUT 就是我们指定的目录地址，Failed Spawning就是生成失败，很明显就是路径存在问题。

前往输出目录查看，果然缺少了logs文件夹。补全文件夹后重启服务，运行成功！

2.其他错误码

为此我特意去找了下systemd源码中有哪些错误码，根据原本意思和AI辅助，列出了全部状态码、翻译和可能出现的情况，仅供参考~