1. couch base测试时，上报错误：
[push@pushtest bin]$ ./cbworkloadgen -n localhost:8091
Traceback (most recent call last):
File "/opt/couchbase/lib/python/cbworkloadgen", line 79, in _run
options.verbose)
File "/opt/couchbase/lib/python/couchbase/couchbaseclient.py", line 684, in __init__
self.rest = RestConnection(server)
File "/opt/couchbase/lib/python/couchbase/rest_client.py", line 185, in __init__
self.couch_api_base = config["nodes"][0].get("couchApiBase")
TypeError: string indices must be integers