install mongoDB (child process failed, exited with error number 100)

Question

I tried to install mongoDB on my macbook air.

I\'ve downloaded zipped file from official website and extract that file and move to root directory. After that, under

Answer 1

I had the same error. I ran it interactively to see the log.

2014-10-21T10:12:35.418-0400 [initandlisten] ERROR: listen(): bind() failed errno:48 Address already in use for socket: 0.0.0.0:27017

Then I used lsof to find out which process was using my port.

$ lsof -i:27017
COMMAND  PID     USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
mongod  2106 MYUSERID   10u  IPv4 0x635b71ec3b65b4a1      0t0  TCP *:27017 (LISTEN)

It was a mongod that I had forked previously and forgot to turn off (since I hadn't seen it running in my bash window). Simply killing it by running kill 2106, enabled my process to run without the error 100.