添加memcached后启动seahub报错

[root@localhost seafile-server-latest]# ./seahub.sh start-fastcgi
LC_ALL is not set in ENV, set to en_US.UTF-8
Starting seahub (fastcgi) at 127.0.0.1:8000 …
Warning: Cache is not working, please check memcached is running if you are using memcached backend, otherwise, please check permission of cache directory on your file system.

Seahub is started

Done.

以下是logs/seahub.log文件内容:
2017-08-03 08:01:28,200 [ERROR] django.pylibmc:146 set MemcachedError: error 3 from memcached_set: CONNECTION FAILURE
Traceback (most recent call last):
File “/usr/lib/python2.7/site-packages/django_pylibmc/memcached.py”, line 140, in set
**COMPRESS_KWARGS)
ConnectionError: error 3 from memcached_set: CONNECTION FAILURE
2017-08-03 08:01:28,201 [ERROR] django.pylibmc:132 get MemcachedError: error 47 from memcached_get(:1:test_cache): SERVER HAS FAILED AND IS DISABLED UNTIL TIMED RETRY
Traceback (most recent call last):
File “/usr/lib/python2.7/site-packages/django_pylibmc/memcached.py”, line 130, in get
return super(PyLibMCCache, self).get(key, default, version)
File “/home/user/haiwen/seafile-server-6.1.1/seahub/thirdpart/Django-1.8.18-py2.7.egg/django/core/cache/backends/memcached.py”, line 84, in get
val = self._cache.get(key)
ServerDown: error 47 from memcached_get(:1:test_cache): SERVER HAS FAILED AND IS DISABLED UNTIL TIMED RETRY
2017-08-03 08:31:05,059 [ERROR] django.pylibmc:146 set MemcachedError: error 3 from memcached_set: CONNECTION FAILURE
Traceback (most recent call last):
File “/usr/lib/python2.7/site-packages/django_pylibmc/memcached.py”, line 140, in set
**COMPRESS_KWARGS)
ConnectionError: error 3 from memcached_set: CONNECTION FAILURE
2017-08-03 08:31:05,060 [ERROR] django.pylibmc:132 get MemcachedError: error 47 from memcached_get(:1:test_cache): SERVER HAS FAILED AND IS DISABLED UNTIL TIMED RETRY
Traceback (most recent call last):
File “/usr/lib/python2.7/site-packages/django_pylibmc/memcached.py”, line 130, in get
return super(PyLibMCCache, self).get(key, default, version)
File “/home/user/haiwen/seafile-server-6.1.1/seahub/thirdpart/Django-1.8.18-py2.7.egg/django/core/cache/backends/memcached.py”, line 84, in get
val = self._cache.get(key)
ServerDown: error 47 from memcached_get(:1:test_cache): SERVER HAS FAILED AND IS DISABLED UNTIL TIMED RETRY
2017-08-03 08:46:41,275 [ERROR] django.pylibmc:146 set MemcachedError: error 3 from memcached_set: CONNECTION FAILURE
Traceback (most recent call last):
File “/usr/lib/python2.7/site-packages/django_pylibmc/memcached.py”, line 140, in set
**COMPRESS_KWARGS)
ConnectionError: error 3 from memcached_set: CONNECTION FAILURE
2017-08-03 08:46:41,276 [ERROR] django.pylibmc:132 get MemcachedError: error 47 from memcached_get(:1:test_cache): SERVER HAS FAILED AND IS DISABLED UNTIL TIMED RETRY
Traceback (most recent call last):
File “/usr/lib/python2.7/site-packages/django_pylibmc/memcached.py”, line 130, in get
return super(PyLibMCCache, self).get(key, default, version)
File “/home/user/haiwen/seafile-server-6.1.1/seahub/thirdpart/Django-1.8.18-py2.7.egg/django/core/cache/backends/memcached.py”, line 84, in get
val = self._cache.get(key)
ServerDown: error 47 from memcached_get(:1:test_cache): SERVER HAS FAILED AND IS DISABLED UNTIL TIMED RETRY