Question

我希望有人可以帮助我，因为我已经查看了Stack Overflow，无法找到问题的解决方案。我正在运行一个Django项目，并安装了Supervisor，RabbitMQ和Celery。 RabbitMQ启动并运行，Supervisor确保我的celerybeat正在运行，但是，当它记录节拍已开始并每5分钟发送一次任务时（见下文），任务实际上从未执行过：

我的主管计划conf：

[program:nrv_twitter]
; Set full path to celery program if using virtualenv
command=/Users/tsantor/.virtualenvs/nrv_env/bin/celery beat -A app --loglevel=INFO --pidfile=/tmp/nrv-celerybeat.pid --schedule=/tmp/nrv-celerybeat-schedule

; Project dir
directory=/Users/tsantor/Projects/NRV/nrv

; Logs
stdout_logfile=/Users/tsantor/Projects/NRV/nrv/logs/celerybeat_twitter.log
redirect_stderr=true

autorestart=true
autostart=true
startsecs=10
user=tsantor

; if rabbitmq is supervised, set its priority higher so it starts first
priority=999

以下是上述程序的日志输出：

[2014-12-16 20:29:42,293: INFO/MainProcess] beat: Starting...
[2014-12-16 20:34:08,161: INFO/MainProcess] Scheduler: Sending due task gettweets-every-5-mins (twitter.tasks.get_tweets)
[2014-12-16 20:39:08,186: INFO/MainProcess] Scheduler: Sending due task gettweets-every-5-mins (twitter.tasks.get_tweets)
[2014-12-16 20:44:08,204: INFO/MainProcess] Scheduler: Sending due task gettweets-every-5-mins (twitter.tasks.get_tweets)
[2014-12-16 20:49:08,205: INFO/MainProcess] Scheduler: Sending due task gettweets-every-5-mins (twitter.tasks.get_tweets)
[2014-12-16 20:54:08,223: INFO/MainProcess] Scheduler: Sending due task gettweets-every-5-mins (twitter.tasks.get_tweets)

以下是我的celery.py设置文件：

from datetime import timedelta

BROKER_URL = 'amqp://guest:guest@localhost//'

CELERY_DISABLE_RATE_LIMITS = True

CELERYBEAT_SCHEDULE = {
    'gettweets-every-5-mins': {
        'task': 'twitter.tasks.get_tweets',
        'schedule': timedelta(seconds=300) # 300 = every 5 minutes
    },
}

这是我的celeryapp.py：

from __future__ import absolute_import
import os
from django.conf import settings
from celery import Celery

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'app.settings')

app = Celery('app')
app.config_from_object('django.conf:settings')
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)

这是我的twitter/tasks.py：

from __future__ import absolute_import
import logging
from celery import shared_task
from twitter.views import IngestTweets

log = logging.getLogger('custom.log')

@shared_task
def get_tweets():
    """
    Get tweets and save them to the DB
    """
    instance = IngestTweets()
    IngestTweets.get_new_tweets(instance)

    log.info('Successfully ingested tweets via celery task')
    return True

get_tweets方法永远不会被执行，但我知道它可以正常工作，因为我可以手动执行get_tweets并且工作正常。

我花了两天的时间试图弄清楚它为什么要发送应有的任务，但却没有执行它们？任何帮助是极大的赞赏。提前谢谢。

Answer 1

user2097159感谢你指出我正确的方向，我不知道我也必须使用主管来管理一名工人。我认为这不过是一个工人或一个节拍，但现在我明白我必须有一个工人来处理任务和一个节拍定期开除任务。

以下是主管缺少的工作人员配置：

[program:nrv_celery_worker]
; Worker
command=/Users/tsantor/.virtualenvs/nrv_env/bin/celery worker -A app --loglevel=INFO

; Project dir
directory=/Users/tsantor/Projects/NRV/nrv

; Logs
stdout_logfile=/Users/tsantor/Projects/NRV/nrv/logs/celery_worker.log
redirect_stderr=true

autostart=true
autorestart=true
startsecs=10
user=tsantor
numprocs=1

; Need to wait for currently executing tasks to finish at shutdown.
; Increase this if you have very long running tasks.
stopwaitsecs = 600

; When resorting to send SIGKILL to the program to terminate it
; send SIGKILL to its whole process group instead,
; taking care of its children as well.
killasgroup=true

; if rabbitmq is supervised, set its priority higher
; so it starts first
priority=998

然后我重置了RabbitMQ队列。既然我有通过主管管理的节拍和工作程序，所有都按预期工作。希望这有助于其他人。

Answer 2

您需要启动工作流程和节拍流程。您可以创建单独的进程as described in tsantor's answer，也可以创建一个包含工作者和节拍的单个进程。这在开发过程中可能更方便（但不建议用于生产）。

来自"Starting the scheduler" in the Celery documentation：

你也可以通过启用workers -B选项在工作者中嵌入节拍，如果你永远不会运行多个工作节点，这很方便，但它并不常用，因此不推荐用于生产用途：

$ celery -A proj worker -B

要在Supervisor配置文件中表达，请参阅https://github.com/celery/celery/tree/master/extra/supervisord/（从"Daemonization"链接）

Celery / RabbitMQ / Django没有运行任务

2 个答案: