我已经在Ocata版本上安装了openstack-sahara。控制器和网络节点位于同一台计算机上（Centos 7.0操作系统），但是所有openstack数据处理命令都给出以下错误：
APIException：无法解析来自Sahara的响应：内部服务器错误。
sahara.conf文件为：
debug = True
verbose = true
log_dir = /var/log/sahara
transport_url = rabbit://guest:guest@10.96.18.21:5672/
rpc_backend = rabbit
api_paste_config = /etc/sahara/api-paste.ini
host =10.96.18.21
use_neutron = True
use_namespaces = True
api_workers = 24
heat_enable_wait_condition = false
connection = mysql+pymysql://sahara:Password123@10.96.18.21/sahara
auth_uri=http://10.96.18.21:5000/v3
identity_uri=http://10.96.18.21:35357
project_domain_id = default
user_domain_id = default
auth_plugin = password
username = sahara
auth_username = sahara
password = Password123
auth_password = Password123
admin_user=sahara
admin_tenant_name=services
admin_password=Password123
host = 10.96.18.21
driver = messaging
transport_url = rabbit://guest:guest@10.96.18.21:5672/
topics = notifications
enable = true
rabbit_use_ssl = False
policy_file = /etc/sahara/policy.json
sahara-api.log或sahara-engine.log中都没有错误或调试消息。
有人可以帮助解决这个问题