django-rq 使用 django_redis， NOAUTH 异常

django-rq 使用 django_redis, redis.conf 未设置 password ，突然报 NOAUTH Authentication required.

settings ：

CACHES = {
    "default": {
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": "redis://127.0.0.1:6379/0",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        }
    }
}

redis.conf, requirepass 行未打开注释

# Warning: since Redis is pretty fast an outside user can try up to
# 150k passwords per second against a good box. This means that you should
# use a very strong password otherwise it will be very easy to break.
#
#requirepass foobared

django-rq exception

2017-01-13 02:50:13,312 DEBG 'rqworker_high' stderr output:
    output = self.handle(*args, **options)
  File "/home/ec2-user/Envs/dev/local/lib/python2.7/site-packages/django_rq/management/commands/rqworker.py", line 76, in handle
    w.work(burst=options.get('burst', False))
  File "/home/ec2-user/Envs/dev/local/lib/python2.7/site-packages/rq/worker.py", line 340, in work
    self.register_birth()
  File "/home/ec2-user/Envs/dev/local/lib/python2.7/site-packages/rq/worker.py", line 206, in register_birth
    if self.connection.exists(self.key) and \
  File "/home/ec2-user/Envs/dev/local/lib/python2.7/site-packages/redis/client.py", line 838, in exists

2017-01-13 02:50:13,312 DEBG 'rqworker_high' stderr output:
    return self.execute_command('EXISTS', name)
  File "/home/ec2-user/Envs/dev/local/lib/python2.7/site-packages/redis/client.py", line 565, in execute_command
    return self.parse_response(connection, command_name, **options)
  File "/home/ec2-user/Envs/dev/local/lib/python2.7/site-packages/redis/client.py", line 577, in parse_response

2017-01-13 02:50:13,312 DEBG 'rqworker_high' stderr output:
    response = connection.read_response()
  File "/home/ec2-user/Envs/dev/local/lib/python2.7/site-packages/redis/connection.py", line 574, in read_response
    raise response

2017-01-13 02:50:13,313 DEBG 'rqworker_high' stderr output:
redis.exceptions.ResponseError: NOAUTH Authentication required.