Heroku和Redistogo Nano达到了最大客户

Question

我使用RedisToGo Nano插件在Heroku上使用celerybeat

有一个网络dyno和一个工人dyno

celerybeat工作人员每分钟都要执行一项任务.

问题是:每当我部署新的提交时,dynos重启,我就会收到此错误

2014-02-27T13:19:31.552352+00:00 app[worker.1]: Traceback (most recent call last):
2014-02-27T13:19:31.552352+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/celery/worker/consumer.py", line 389, in start
2014-02-27T13:19:31.552352+00:00 app[worker.1]:     self.reset_connection()
2014-02-27T13:19:31.552352+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/celery/worker/consumer.py", line 727, in reset_connection
2014-02-27T13:19:31.552352+00:00 app[worker.1]:     self.connection = self._open_connection()
2014-02-27T13:19:31.552352+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/celery/worker/consumer.py", line 792, in _open_connection
2014-02-27T13:19:31.552352+00:00 app[worker.1]:     callback=self.maybe_shutdown)
2014-02-27T13:18:23.864287+00:00 app[worker.1]:     self.on_connect()
2014-02-27T13:18:23.864287+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/redis/connection.py", line 263, in on_connect
2014-02-27T13:18:23.864287+00:00 app[worker.1]:     if nativestr(self.read_response()) != 'OK':
2014-02-27T13:18:23.864287+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/redis/connection.py", line 314, in read_response
2014-02-27T13:18:23.864287+00:00 app[worker.1]:     raise response
2014-02-27T13:18:23.864287+00:00 app[worker.1]: ResponseError: max number of clients reached
2014-02-27T13:19:31.552352+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/kombu/connection.py", line 272, in ensure_connection
2014-02-27T13:19:31.552352+00:00 app[worker.1]:     interval_start, interval_step, interval_max, callback)
2014-02-27T13:19:31.552591+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/kombu/utils/__init__.py", line 218, in retry_over_time
2014-02-27T13:19:31.552591+00:00 app[worker.1]:     return fun(*args, **kwargs)
2014-02-27T13:19:31.552591+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/kombu/connection.py", line 162, in connect
2014-02-27T13:19:31.552591+00:00 app[worker.1]:     return self.connection
2014-02-27T13:19:31.552591+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/kombu/connection.py", line 617, in connection
2014-02-27T13:18:23.870811+00:00 app[worker.1]: [2014-02-27 13:18:23,870: ERROR/MainProcess] consumer: Connection to broker lost. Trying to re-establish the connection...

那些日志无休止地继续下去.直到我停止两个dynos并重新启动它们.

它已成为一个问题,因为几乎每次部署新提交时都会发生这种情况.

任何想法为什么会发生这种情况以及如何解决这个问题？

Answer 1

纳米redistogo计划在10处同时进行redis连接.

使用的redis连接数将根据您的前端和芹菜工作者设置而有所不同.听起来您正在为生产堆栈使用> = 5 redis连接.

当您部署新代码时,Heroku会创建一个全新的堆栈.这意味着您在部署时使用的是= = 10个redis连接.

有两种方法可以解决这个问题:

• 通过升级到更大的计划($$$),增加允许的redistogo连接的最大数量
• 减少堆栈使用的连接数(减少芹菜并发或web工作者使用的redis连接)

这是资源耗尽的简单问题.我只想支付更大的RedisToGo计划.