This killing procedure will allow us to close connections from inactive and non dedicated connections, (if we have to kill active or dedicated connections we already have database/so tools to do this (db.killOp, kill)):
1) Locate the process :
netstat -lnap|grep 127
tcp 0 0 127.0.0.1:27017 127.0.0.1:55798 ESTABLISHED 2516/mongod
2) Locate the the socket's FD (file descriptor)
lsof -np 2516|grep 127
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
mongod 2516 mongod 98u IPv4 458536 0t0 TCP 127.0.0.1:27017->127.0.0.1:55798 (ESTABLISHED)
3) Connect to the master process, close the socket and exit:
gdb -p 2516
call close(98u)
quit
