Flask-Gunicorn、Nginx和Supervisor的部署，Supervisor错误日志

Question

我已经部署了一个带有Gunicorn+Nginx+Supervisor的Flask应用程序。它不起作用。在线搜索发现了几份类似问题的报告，但都没有符合我们情况的解释或解决问题的解决方案。这里说要关闭守护进程gunicorn。如果我是对的，那不是我的情况。

似乎有什么东西启动了一个监听8000端口的服务。Supervisor每秒向日志文件发送错误。

什么能帮我？

Supervisor app-stderr.log中的错误：

[2015-02-19 18:56:19 +0300] [964] [INFO] Starting gunicorn 19.2.1
[2015-02-19 18:56:19 +0300] [964] [INFO] Listening at: http://127.0.0.1:8000 (964)
[2015-02-19 18:56:19 +0300] [964] [INFO] Using worker: sync
[2015-02-19 18:56:19 +0300] [1078] [INFO] Booting worker with pid: 1078
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
 * Restarting with stat
[2015-02-19 18:56:20 +0300] [1081] [INFO] Starting gunicorn 19.2.1
[2015-02-19 18:56:20 +0300] [1081] [ERROR] Connection in use: ('localhost', 8000)
[2015-02-19 18:56:20 +0300] [1081] [ERROR] Retrying in 1 second.
[2015-02-19 18:56:21 +0300] [1081] [ERROR] Connection in use: ('localhost', 8000)
[2015-02-19 18:56:21 +0300] [1081] [ERROR] Retrying in 1 second.
[2015-02-19 18:56:22 +0300] [1081] [ERROR] Connection in use: ('localhost', 8000)
[2015-02-19 18:56:22 +0300] [1081] [ERROR] Retrying in 1 second.
[2015-02-19 18:56:23 +0300] [1081] [ERROR] Connection in use: ('localhost', 8000)
[2015-02-19 18:56:23 +0300] [1081] [ERROR] Retrying in 1 second.
[2015-02-19 18:56:24 +0300] [1081] [ERROR] Connection in use: ('localhost', 8000)
[2015-02-19 18:56:24 +0300] [1081] [ERROR] Retrying in 1 second.
[2015-02-19 18:56:25 +0300] [1081] [ERROR] Can't connect to ('localhost', 8000)
[2015-02-19 18:56:25 +0300] [1078] [INFO] Worker exiting (pid: 1078)
[2015-02-19 18:56:25 +0300] [1122] [INFO] Booting worker with pid: 1122
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
 * Restarting with stat
[2015-02-19 18:56:27 +0300] [1148] [INFO] Starting gunicorn 19.2.1
[2015-02-19 18:56:27 +0300] [1148] [ERROR] Connection in use: ('localhost', 8000)
[2015-02-19 18:56:27 +0300] [1148] [ERROR] Retrying in 1 second.
[2015-02-19 18:56:28 +0300] [1148] [ERROR] Connection in use: ('localhost', 8000)
[2015-02-19 18:56:28 +0300] [1148] [ERROR] Retrying in 1 second.
[2015-02-19 18:56:29 +0300] [1148] [ERROR] Connection in use: ('localhost', 8000)
[2015-02-19 18:56:29 +0300] [1148] [ERROR] Retrying in 1 second.
[2015-02-19 18:56:30 +0300] [1148] [ERROR] Connection in use: ('localhost', 8000)
[2015-02-19 18:56:30 +0300] [1148] [ERROR] Retrying in 1 second.
[2015-02-19 18:56:31 +0300] [1148] [ERROR] Connection in use: ('localhost', 8000)
[2015-02-19 18:56:31 +0300] [1148] [ERROR] Retrying in 1 second.
[2015-02-19 18:56:32 +0300] [1148] [ERROR] Can't connect to ('localhost', 8000)
[2015-02-19 18:56:32 +0300] [1122] [INFO] Worker exiting (pid: 1122)
[2015-02-19 18:56:32 +0300] [1206] [INFO] Booting worker with pid: 1206
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
 * Restarting with stat
[2015-02-19 18:56:32 +0300] [1211] [INFO] Starting gunicorn 19.2.1
[2015-02-19 18:56:32 +0300] [1211] [ERROR] Connection in use: ('localhost', 8000)

我的主管conf:

[program:app]
command = /home/www/app/flask/bin/gunicorn app:app -b localhost:8000 --preload
directory = /home/www/app
user = webhost

Netstat-薄纱

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      930/nginx
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      855/sshd
tcp        0      0 127.0.0.1:8000          0.0.0.0:*               LISTEN      1392/python3
tcp6       0      0 :::22                   :::*                    LISTEN      855/sshd

和ps aux|grep python

root       954  0.1  2.4  60564 12440 ?        Ss   18:56   0:01 /usr/bin/python /usr/bin/supervisord -c /etc/supervisor/supervisord.conf
webhost   1392  0.0  3.2  67148 16512 ?        S    19:00   0:00 /home/www/app/flask/bin/python3 /home/www/app/flask/bin/gunicorn app:app -b localhost:8000
webhost   2124  5.2  4.2  86072 21344 ?        S    19:12   0:00 /home/www/app/flask/bin/python3 /home/www/app/flask/bin/gunicorn app:app -b localhost:8000
webhost   2126  5.2  3.2  67148 16488 ?        S    19:12   0:00 /home/www/app/flask/bin/python3 /home/www/app/flask/bin/gunicorn app:app -b localhost:8000
webhost   2130  0.0  0.1  11744   920 pts/0    S+   19:13   0:00 grep --color=auto python

UPD。监管者配置高于

nginx.conf

server {
    location / {
        proxy_pass http://127.0.0.1:8000;
    }
    location /static {
        alias  /home/www/myapp/app/static/;
    }
}

文件结构

myapp
  |
  |-app-
  |    |
  |    __init__.py  
  |
  run.py
  |
  config.py

__init__.py

from flask import Flask
app = Flask(__name__)
app.config.from_object('config')
from app import views

运行.py

#!flask/bin/python
from app import app
app.run()

配置

# For valid forms
CSRF_ENABLED = True
SECRET_KEY = 'never-guess'

Answer 1

我离开了。感谢@Ibrahim我在run.py 中通过gunicorn启动了一个应用程序

#!flask/bin/python
from app import app
app.run()

所以gunicorn也创造了过程和app.run()。他们彼此冲突。刚刚删除了那个字符串。

Answer 2

我遇到了同样的问题，通过调整Alwx的答案，我的解决方案是只有在模块被调用为main（run.py）时才运行应用程序：

from my_app import create_app
app = create_app()
if __name__ == '__main__':
    app.run(host='0.0.0.0', port=8080, debug=True)

然后我用gunicorn:运行它

gunicorn run:app

我仍然可以像以前一样只使用python run.py 运行它