Not authorized for query error When mongodb is using a keyFile

[xunshuairu]

I found this problem, when I play with PEPS-source code.

To reproduce the error only need to use a keyFile to launch mongod service:

sudo mongod --keyFile /PathTo/key

Then run the opa app, you will get the error:

DbGen/Mongo Error while opening database "rawdata"
{DocError = [{name = ok; value = {Double = 0.0}}, {name = errmsg; value = {String = auth failed}}, {name = code; value = {Int32 = 18}}]}