python - heroku 的 gunicorn 和 bottle 设置

Question

我在 heroku 上玩 bottle，想换一个更“生产”的 WSGI 服务器 gunicorn。这是我的设置:

import os
import bottle
from bottle import route, run, template, request, static_file, error

class StripPathMiddleware(object):
    def __init__(self, app):
        self.app = app
    def __call__(self, e, h):
        e['PATH_INFO'] = e['PATH_INFO'].rstrip('/')
        return self.app(e, h)

# ................................................................. #

@error(404)
def error404(error):
    return template('view/404.tpl')

app = bottle.app()
run(app=StripPathMiddleware(app), server='gunicorn', host='0.0.0.0', port=int(os.environ.get("PORT", 5000)), debug=True, workers=3)

这是我的Procfile:

web: gunicorn SimpleServer:app -w 3

我在 SimpleServer.py 应用程序中尝试了设置和不设置 worker 数量的 Procfile。

在本地机器上，只有当我在应用程序中有 workers=3 并且我没有指定启动 gunicorn 的 worker 时，它才有效:

(bottleServ)caerus@Artem:~/bottleServ$ gunicorn SimpleServer:app
2013-02-02 23:23:48 [18133] [INFO] Starting gunicorn 0.17.2
2013-02-02 23:23:48 [18133] [INFO] Listening at: http://127.0.0.1:8000 (18133)
2013-02-02 23:23:48 [18133] [INFO] Using worker: sync
2013-02-02 23:23:48 [18138] [INFO] Booting worker with pid: 18138
Bottle v0.11.6 server starting up (using GunicornServer(workers=3))...
Listening on http://0.0.0.0:5000/
Hit Ctrl-C to quit.

2013-02-02 23:23:48 [18138] [INFO] Starting gunicorn 0.17.2
2013-02-02 23:23:48 [18138] [INFO] Listening at: http://0.0.0.0:5000 (18138)
2013-02-02 23:23:48 [18138] [INFO] Using worker: sync
2013-02-02 23:23:48 [18139] [INFO] Booting worker with pid: 18139
2013-02-02 23:23:48 [18140] [INFO] Booting worker with pid: 18140
2013-02-02 23:23:48 [18141] [INFO] Booting worker with pid: 18141

但是 foreman start 有问题，无论我使用什么设置我都会得到:

(bottleServ)caerus@Artem:~/bottleServ$ foreman start
23:31:57 web.1  | started with pid 18192
23:31:58 web.1  | 2013-02-02 23:31:58 [18195] [INFO] Starting gunicorn 0.17.2
23:31:58 web.1  | 2013-02-02 23:31:58 [18195] [INFO] Listening at: http://0.0.0.0:5000  (18195)
23:31:58 web.1  | 2013-02-02 23:31:58 [18195] [INFO] Using worker: sync
23:31:58 web.1  | 2013-02-02 23:31:58 [18200] [INFO] Booting worker with pid: 18200
23:31:58 web.1  | 2013-02-02 23:31:58 [18201] [INFO] Booting worker with pid: 18201
23:31:58 web.1  | 2013-02-02 23:31:58 [18202] [INFO] Booting worker with pid: 18202
23:31:58 web.1  | Bottle v0.11.6 server starting up (using GunicornServer(workers=3))...
23:31:58 web.1  | Listening on http://0.0.0.0:5000/
23:31:58 web.1  | Hit Ctrl-C to quit.
23:31:58 web.1  | 2013-02-02 23:31:58 [18202] [INFO] Starting gunicorn 0.17.2
23:31:58 web.1  | 2013-02-02 23:31:58 [18202] [ERROR] Connection in use: ('0.0.0.0', 5000)
23:31:58 web.1  | 2013-02-02 23:31:58 [18202] [ERROR] Retrying in 1 second.
23:31:58 web.1  | Bottle v0.11.6 server starting up (using GunicornServer(workers=3))...
23:31:58 web.1  | Bottle v0.11.6 server starting up (using GunicornServer(workers=3))...
23:31:58 web.1  | Listening on http://0.0.0.0:5000/
23:31:58 web.1  | Listening on http://0.0.0.0:5000/
23:31:58 web.1  | Hit Ctrl-C to quit.
23:31:58 web.1  | Hit Ctrl-C to quit.
23:31:58 web.1  | 2013-02-02 23:31:58 [18200] [INFO] Starting gunicorn 0.17.2
23:31:58 web.1  | 2013-02-02 23:31:58 [18201] [INFO] Starting gunicorn 0.17.2
23:31:58 web.1  | 2013-02-02 23:31:58 [18200] [ERROR] Connection in use: ('0.0.0.0',   5000)
23:31:58 web.1  | 2013-02-02 23:31:58 [18201] [ERROR] Connection in use: ('0.0.0.0', 5000)
23:31:58 web.1  | 2013-02-02 23:31:58 [18200] [ERROR] Retrying in 1 second.
23:31:58 web.1  | 2013-02-02 23:31:58 [18201] [ERROR] Retrying in 1 second.

任何想法将不胜感激! )

Answer 1

您正在启动 gunicorn 来运行应用程序，然后使用 Bottle's 'run'生成另一个服务器(至少在 Heroku 上)。出现错误的原因是初始服务器使用端口 5000 而第二个服务器无法访问它。尝试运行你的 bottle 应用程序 (python SimpleServer.py) 它应该创建服务器本身。此外，当您将“app”传递给 run 时，http 服务器会生成您的应用程序的另一个副本(它会生成另一个 gunicorn 服务器)，因此只需将其删除即可。

run(server='gunicorn', host='0.0.0.0', port=int(os.environ.get("PORT", 5000)), debug=True, workers=X)

python SimpleServer.py

应有尽有。