Starting Mongod Fails Repetitively

Question

MacOS:

I try to get MongoDB running... when I type in mongod this is happening:

exception in initAndListen: 98 Unable to create/open lock file:
/data/db/mongod.lock errno:13 Permission denied

is this enough to determine what's wrong? Or should I post the whole error message ?

Answer 1

So I have the solution:

I went to the terminal and run chmod 777 /data/db .

Now mongod works and mongo works as well.