无法使用 unix 套接字运行服务或未创建 app.sock 文件

Question

我有硬件服务，需要作为服务运行。如果我直接运行 sudo harware_servicee.py 它是否按预期工作，但是如果我尝试与服务相同的操作，则不会创建 app.sock 文件。

给出下面的示例场景。

hardware_service.py

app = Flask(__name__)


@app.route("/overall")
def overall_stats_route():
    data = {
        "os": get_os_info(),
        "cpu": get_cpu_info(),
        "disk": get_disk_info(),
        "swap": get_swap_info(),
        "disk_partitions": get_partitions_info(),
    }
    return jsonify(data)


if __name__ == "__main__":
    print("Running as service...")
    app.run(host="unix://usr/bin/app.sock")

cd /etc/系统/系统 hardware_service.service

[Unit]
Description=My Service

[Service]
ExecStart=/usr/bin/python /home/<user>/hardware_service.py
Restart=always

[Install]
WantedBy=multi-user.target

sudo systemctl daemon-reload

sudo systemctl start hardware_service

sudo systemctl status hardware_service

sudo systemctl enable hardware_service

如果我将其作为服务（hardwaare_service）运行，app.sock 不会在 /usr/bin 下创建。但是如果运行 sudo python hardware_service.py 然后 app.sock 文件正在创建。

sudo systemctl status hardware_service

`● hardware_service.service - My Service
   Loaded: loaded (/etc/systemd/system/hardware_service.service; enabled; vendor preset: disabled)
   Active: active (running) since Thu 2023-02-23 09:39:51 UTC; 21h ago
 Main PID: 22559 (hardware_servic)
   CGroup: /system.slice/hardware_service.service
           ├─22559 /home/narenautod/dist/hardware_service
           └─22560 /home/narenautod/dist/hardware_service

Feb 23 09:39:51 narenautod systemd[1]: Started My Service.
Feb 23 09:39:51 narenautod hardware_service[22559]: Running as service...
Feb 23 09:39:51 narenautod hardware_service[22559]: * Serving Flask app "hardware_service" (lazy loading)
Feb 23 09:39:51 narenautod hardware_service[22559]: * Environment: production
Feb 23 09:39:51 narenautod hardware_service[22559]: WARNING: This is a development server. Do not use it in a production deployment.
Feb 23 09:39:51 narenautod hardware_service[22559]: Use a production WSGI server instead.
Feb 23 09:39:51 narenautod hardware_service[22559]: * Debug mode: off
Feb 23 09:39:51 narenautod hardware_service[22559]: * Running on unix:////app.sock (Press CTRL+C to quit)`

Feb 23 11:01:49 narenautod systemd[1]：当前命令从单元文件中消失，命令列表的执行将不会恢复。

客户端.py

`import requests_unixsocket

session = requests_unixsocket.Session()
base_url = "http+unix:///usr/bin/app.sock"
r = session.get(base_url + "/overall")

print(r.status_code)
print(r.text)
assert r.status_code == 200`

python 客户端.py

`Traceback (most recent call last):
  File "client.py", line 6, in <module>
    r = session.get(base_url + "/overall")
  File "/usr/lib/python2.7/site-packages/requests/sessions.py", line 498, in get
    return self.request('GET', url, **kwargs)
  File "/usr/lib/python2.7/site-packages/requests/sessions.py", line 486, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python2.7/site-packages/requests/sessions.py", line 598, in send
    r = adapter.send(request, **kwargs)
  File "/usr/lib/python2.7/site-packages/requests/adapters.py", line 415, in send
    raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', error(2, 'No such file or directory'))`

我是否遗漏了将其作为服务运行的任何内容？

操作系统：centos