当运行作为守护程序时，Celery 工作人员无法完成工作

Question

我有一个带有 django 和 redis 的芹菜设置。当我通过用户命令运行 celery 时，比如 celery multi start 123_work -A 123 --pidfile="/var/log/celery/%n.pid" -- logfile="/var/log/celery/%n.log" --workdir="/data/ports/dj_dois" --loglevel=INFO 工作正常，但如果我运行芹菜通过 celeryd 或 supervisor 一些工作给我一个错误：

[2015-12-28 09:10:59,229: ERROR/MainProcess] Unrecoverable error: UnpicklingError('NEWOBJ class argument has NULL tp_new',)
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/celery/worker/__init__.py", line 206, in start
    self.blueprint.start(self)
  File "/usr/local/lib/python3.4/dist-packages/celery/bootsteps.py", line 123, in start
    step.start(parent)
  File "/usr/local/lib/python3.4/dist-packages/celery/bootsteps.py", line 374, in start
    return self.obj.start()
  File "/usr/local/lib/python3.4/dist-packages/celery/worker/consumer.py", line 278, in start
    blueprint.start(self)
  File "/usr/local/lib/python3.4/dist-packages/celery/bootsteps.py", line 123, in start
    step.start(parent)
  File "/usr/local/lib/python3.4/dist-packages/celery/worker/consumer.py", line 821, in start
    c.loop(*c.loop_args())
  File "/usr/local/lib/python3.4/dist-packages/celery/worker/loops.py", line 76, in asynloop
    next(loop)
  File "/usr/local/lib/python3.4/dist-packages/kombu/async/hub.py", line 328, in create_loop
    next(cb)
  File "/usr/local/lib/python3.4/dist-packages/celery/concurrency/asynpool.py", line 258, in _recv_message
    message = load(bufv)
_pickle.UnpicklingError: NEWOBJ class argument has NULL tp_new

[2015-12-28 09:10:59,317: ERROR/MainProcess] Task db_select_task[dd5af67d-6bbe-49bb-8f13-59d0a0a9717b] raised unexpected: WorkerLostError('Worker exited prematurely: exitcode 0.',)
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/celery/worker/__init__.py", line 206, in start
    self.blueprint.start(self)
  File "/usr/local/lib/python3.4/dist-packages/celery/bootsteps.py", line 123, in start
    step.start(parent)
  File "/usr/local/lib/python3.4/dist-packages/celery/bootsteps.py", line 374, in start
    return self.obj.start()
  File "/usr/local/lib/python3.4/dist-packages/celery/worker/consumer.py", line 278, in start
    blueprint.start(self)
  File "/usr/local/lib/python3.4/dist-packages/celery/bootsteps.py", line 123, in start
    step.start(parent)
  File "/usr/local/lib/python3.4/dist-packages/celery/worker/consumer.py", line 821, in start
    c.loop(*c.loop_args())
  File "/usr/local/lib/python3.4/dist-packages/celery/worker/loops.py", line 76, in asynloop
    next(loop)
  File "/usr/local/lib/python3.4/dist-packages/kombu/async/hub.py", line 328, in create_loop
    next(cb)
  File "/usr/local/lib/python3.4/dist-packages/celery/concurrency/asynpool.py", line 258, in _recv_message
    message = load(bufv)
_pickle.UnpicklingError: NEWOBJ class argument has NULL tp_new

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/billiard/pool.py", line 1175, in mark_as_worker_lost
    human_status(exitcode)),
billiard.exceptions.WorkerLostError: Worker exited prematurely: exitcode 0.

我的芹菜版本：

software -> celery:3.1.19 (Cipater) kombu:3.0.32 py:3.4.2
            billiard:3.3.0.22 py-amqp:1.4.8
platform -> system:Linux arch:64bit, ELF imp:CPython
loader   -> celery.loaders.default.Loader
settings -> transport:amqp results:disabled

Python-3.4

Django - 1.8.7

Redis 服务器 v=2.8.17

给我一个错误的工作示例：

@shared_task(name='db_select_task')
def db_select_task(arg1,arg2):
    conn_pool = pool.manage(cx_Oracle)
    db = conn_pool.connect("user/pass@db")
    try:
        cursor = db.cursor()
        ports = {}
        t = tech
        cursor.execute("sql")
        data = cursor.fetchall()
    except Exception:
        return ('Error: with db')
    finally:
        cursor.close()
        db.close()
    return data

Answer 1

问题出在 celery 守护程序的 oracle 路径上。只需为 celery 配置添加额外的导出。

当运行作为守护程序时，Celery 工作人员无法完成工作

Celery worker can't complete job wher running as daemon

python

django

supervisord

celeryd

当 运行 作为守护程序时，Celery 工作人员无法完成工作

Celery worker can't complete job wher running as daemon

python

django

supervisord

celeryd

当运行作为守护程序时，Celery 工作人员无法完成工作