redis-py version error

[battosai30]

Hi guys,

Describe the bug
Indico start and start again. When I ook into celery log :

> 019-03-07 12:17:43,300  INFO     celery.beat               beat: Starting...
> 2019-03-07 12:17:43,554  ERROR    celery.utils.dispatch.signal Signal handler <function _send_initial_heartbeat at 0x7fef9f23f0c8> raised: VersionMismatch(u'Redis transport requires redis-py versions 3.2.0 or later. You have 2.10.6',)
> Traceback (most recent call last):
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/celery/utils/dispatch/signal.py", line 230, in send
>     response = receiver(signal=self, sender=sender, **named)
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/indico/core/celery/__init__.py", line 68, in _send_initial_heartbeat
>     heartbeat.delay(initial=True)
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/celery/app/task.py", line 412, in delay
>     return self.apply_async(args, kwargs)
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/indico/core/celery/core.py", line 135, in apply_async
>     link=link, link_error=link_error, shadow=shadow, **options)
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/celery/app/task.py", line 535, in apply_async
>     **options
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/celery/app/base.py", line 728, in send_task
>     amqp.send_task_message(P, name, message, **options)
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/celery/app/amqp.py", line 552, in send_task_message
>     **properties
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/messaging.py", line 181, in publish
>     exchange_name, declare,
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/connection.py", line 510, in _ensured
>     return fun(*args, **kwargs)
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/messaging.py", line 187, in _publish
>     channel = self.channel
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/messaging.py", line 209, in _get_channel
>     channel = self._channel = channel()
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/utils/functional.py", line 44, in __call__
>     value = self.__value__ = self.__contract__()
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/messaging.py", line 224, in <lambda>
>     channel = ChannelPromise(lambda: connection.default_channel)
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/connection.py", line 852, in default_channel
>     self.ensure_connection(**conn_opts)
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/connection.py", line 422, in ensure_connection
>     callback, timeout=timeout)
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/utils/functional.py", line 341, in retry_over_time
>     return fun(*args, **kwargs)
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/connection.py", line 275, in connect
>     return self.connection
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/connection.py", line 823, in connection
>     self._connection = self._establish_connection()
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/connection.py", line 778, in _establish_connection
>     conn = self.transport.establish_connection()
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/transport/virtual/base.py", line 941, in establish_connection
>     self._avail_channels.append(self.create_channel(self))
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/transport/virtual/base.py", line 923, in create_channel
>     channel = self.Channel(connection)
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/transport/redis.py", line 495, in __init__
>     self.Client = self._get_client()
>   File "/opt/indico/.venv/local/lib/python2.7/site-packages/kombu/transport/redis.py", line 956, in _get_client
>     'You have {0.__version__}'.format(redis))
> 

So apparently there is a mismatch version. I am not a Python expert at all, and I spend hours trying to find a solution but I failed.

To Reproduce

Fresh install, I just followed the installation guide. Two differences in my case (i don't think the problem comes from here) :

• it's an LXC container.
• I use a nginx reverse proxy server to join my indico instance (but it seems to work well) so the SSL config is manage by the nginx, not the indico instance.

Regards

[ThiefMaster]

Looks like it's caused by celery/kombu#1016. Once again they released a new non-major version changing the requirements of their dependencies.

For now you can use this workaround:

pip uninstall -y kombu && pip install 'kombu==4.3.0'

[battosai30]

Thank you so much it solved this issue. Now I can focus on the js errors ....

[ThiefMaster]

I just released v2.1.8 which should fix this issue properly.