在部署pyspider分布式时,尝试连接redis集群
配置项为： "message_queue":"redis://127.0.0.1:6380/db"
在启动时：报如下错误
[E 170221 09:40:39 tornado_fetcher:529] MOVED 12068 127.0.0.1:6380
Traceback (most recent call last):
File "/usr/lib/python2.6/site-packages/pyspider/fetcher/tornado_fetcher.py", line 515, in queue_loop
if self.outqueue.full():
File "/usr/lib/python2.6/site-packages/pyspider/message_queue/redis_queue.py", line 50, in full
if self.maxsize and self.qsize() >= self.maxsize:
File "/usr/lib/python2.6/site-packages/pyspider/message_queue/redis_queue.py", line 40, in qsize
self.last_qsize = self.redis.llen(self.name)
File "/usr/lib/python2.6/site-packages/redis/client.py", line 1219, in llen
return self.execute_command('LLEN', name)
File "/usr/lib/python2.6/site-packages/redis/client.py", line 573, in execute_command
return self.parse_response(connection, command_name, **options)
File "/usr/lib/python2.6/site-packages/redis/client.py", line 585, in parse_response
response = connection.read_response()
File "/usr/lib/python2.6/site-packages/redis/connection.py", line 582, in read_response
raise response
ResponseError: MOVED 12068 127.0.0.1:6380
经查找，得到：因为redis由单节点变为集群，而python的redis连接包暂时还不支持redis集群连接方式，需要更换连接包（redis-py-cluster）。
在安装完redis-py-cluster之后，依旧报上面的错误。
