I am running Fedora 20 and installed MongoDB per the Red Hat installation guide on the official documentation. I was able to run the mongod daemon as a service with
mongod
i met the same issue,when i modify my mongod.conf as follow and problem resolved~
port=27017 dbpath=/usr/local/mongodb/data/db/ logpath=/usr/local/mongodb/logs fork = true
tips: logpath is the logfile not a folder.