Heroku：使用RQ進行Python的後臺任務

我想用Heroku爲我的Django應用程序設置後臺任務。Heroku：使用RQ進行Python的後臺任務

我按照Heroku documentation中說明的步驟操作。但是，我一開始就陷入了困境。

我已經成功安裝了RQ：

pip install rq

我創建的worker.py文件，其中包含完全相同的代碼的文件中。

但是，當我嘗試運行：

python worker.py

我得到以下錯誤：

Traceback (most recent call last): 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/connection.py", line 439, in connect 
    sock = self._connect() 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/connection.py", line 494, in _connect 
    raise err 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/connection.py", line 482, in _connect 
    sock.connect(socket_address) 
ConnectionRefusedError: [Errno 61] Connection refused 

During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/client.py", line 572, in execute_command 
    connection.send_command(*args) 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/connection.py", line 563, in send_command 
    self.send_packed_command(self.pack_command(*args)) 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/connection.py", line 538, in send_packed_command 
    self.connect() 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/connection.py", line 442, in connect 
    raise ConnectionError(self._error_message(e)) 
redis.exceptions.ConnectionError: Error 61 connecting to localhost:6379. Connection refused. 

During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/connection.py", line 439, in connect 
    sock = self._connect() 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/connection.py", line 494, in _connect 
    raise err 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/connection.py", line 482, in _connect 
    sock.connect(socket_address) 
ConnectionRefusedError: [Errno 61] Connection refused 

During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
    File "worker.py", line 15, in <module> 
    worker.work() 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/rq/worker.py", line 433, in work 
    self.register_birth() 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/rq/worker.py", line 250, in register_birth 
    if self.connection.exists(self.key) and \ 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/client.py", line 855, in exists 
    return self.execute_command('EXISTS', name) 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/client.py", line 578, in execute_command 
    connection.send_command(*args) 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/connection.py", line 563, in send_command 
    self.send_packed_command(self.pack_command(*args)) 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/connection.py", line 538, in send_packed_command 
    self.connect() 
    File "/Users/MyUser/my_app/lib/python3.5/site-packages/redis/connection.py", line 442, in connect 
    raise ConnectionError(self._error_message(e)) 
redis.exceptions.ConnectionError: Error 61 connecting to localhost:6379. Connection refused.

經過一番研究，我意識到，沒有配置。我現在已經安裝了redistogo，並且在運行heroku config時我可以找到它。不幸的是，這似乎並不是我做錯的唯一的事情，因爲我仍然遇到同樣的錯誤。

我也嘗試localhost127.0.0.1，建議here，但它沒有幫助。

在我發現的所有其他相關問題中，問題不會發生在本地服務器上。

我錯過了哪些步驟？

來源

2017-05-02 J0ANMM

您在Heroku上將您的製作應用程序與當地開發環境混淆。 RedisToGo在Heroku上配置，但是當您在開發計算機上運行它時，環境變量不存在，因此它會嘗試查找在本地運行的Redis實例。

您可以在開發機器上安裝Redis，也可以在本地配置REDISTOGO_URL環境變量。

來源

2017-05-02 08:24:44

我以爲這是在我的本地開發環境中運行'pip install rq'完成的......你能告訴我應該如何安裝它，或者如何在本地配置REDISTOGO_URL環境變量？ – J0ANMM

好的，我想出了一個辦法：我運行命令'heroku config'而不是''redis：// localhost：6379'時得到'REDISTOGO_URL'，它似乎在工作。謝謝！ – J0ANMM

Heroku：使用RQ進行Python的後臺任務

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