Our mongo DB hasn't replica set config.
Verify replica set:
Log into mongo shell and do "rs.conf()", if it comes with "null" then do the following:
cfg = {"_id" : "rpls","version" : 1,"members" : [{"_id" : 0,"host" : "127.0.0.1:27017"}]}This will set your instance as master, as described here:
http://stackoverflow.com/questions/13603096/starting-over-with-replica-configuration-in-mongodb
