Cannot start mongod when opening too many files before getting a socket

2014-09-24T23:45:43.407+0000 D NETWORK  [initandlisten] fd limit hard:20000 soft:20000 max conn: 16000

2014-09-24T23:45:43.407+0000 D COMMANDS [initandlisten] run command local.$cmd { create: "startup_log", size: 10485760, capped: true }

2014-09-24T23:45:43.407+0000 D STORAGE  [initandlisten] create collection local.startup_log { size: 10485760, capped: true }

2014-09-24T23:45:43.407+0000 I QUERY    [initandlisten] command local.$cmd command: create { create: "startup_log", size: 10485760, capped: true } ntoreturn:1 keyUpdates:0 numYields:0  reslen:85 0ms

2014-09-24T23:45:43.407+0000 I QUERY    [initandlisten] insert local.startup_log ninserted:1 keyUpdates:0 numYields:0  0ms

2014-09-24T23:45:43.407+0000 E NETWORK  [initandlisten] socket 1401 is higher than 1023; not supported

2014-09-24T23:45:43.407+0000 I COMMANDS [initandlisten] now exiting

2014-09-24T23:45:43.407+0000 I NETWORK  [initandlisten] shutdown: going to close listening sockets...

2014-09-24T23:45:43.407+0000 I NETWORK  [initandlisten] closing listening socket: 1400

2014-09-24T23:45:43.407+0000 I NETWORK  [initandlisten] closing listening socket: 1401

2014-09-24T23:45:43.407+0000 I NETWORK  [initandlisten] removing socket file: /tmp/mongodb-27017.sock

2014-09-24T23:45:43.407+0000 I NETWORK  [initandlisten] shutdown: going to flush diaglog...

2014-09-24T23:45:43.407+0000 I NETWORK  [initandlisten] shutdown: going to close sockets...

2014-09-24T23:45:43.407+0000 I STORAGE  [initandlisten] shutdown: waiting for fs preallocator...

2014-09-24T23:45:43.407+0000 I STORAGE  [initandlisten] shutdown: final commit...

2014-09-24T23:45:43.407+0000 D JOURNAL  [initandlisten] _groupCommit

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