我正在尝试使用 Heroku 为我的 Django 应用程序设置后台任务。
我正在按照 Heroku documentation 中说明的步骤进行操作. 然而,我一开始就卡住了。
我已经成功安装了 RQ:
pip install rq
我创建了 worker.py
文件,其中包含与文档中完全相同的代码。
但是,当我尝试运行时:
python worker.py
我收到以下错误:
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.
经过一些研究,我意识到 REDISTOGO_URL
没有配置。我现在已经安装了 redistogo
,当运行 heroku config
时我可以找到它。不幸的是,这似乎不是我做错的唯一一件事,因为我仍然遇到同样的错误。
我还尝试按照建议将 localhost
更改为 127.0.0.1
here , 但它没有帮助。
在我发现的所有其他相关问题中,问题都没有发生在本地服务器上。
我缺少哪些步骤?
最佳答案
您将 Heroku 上的生产应用与本地开发环境混淆了。 RedisToGo 在 Heroku 上配置,但当您在开发机器上运行它时,环境变量不存在,因此它会尝试查找在本地运行的 Redis 实例。
您可以在开发机器上安装 Redis,或在本地配置 REDISTOGO_URL 环境变量。
关于python - Heroku:使用 RQ 在 Python 中执行后台任务,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43733050/