mongod --config /usr/local/etc/mongod.conf 無法啟動

問題描述：

  使用命令：mongod --config /usr/local/etc/mongod.conf 無法啟動mongodb，也不列印任何資訊。之前用的都好好的，請問是什麼原因呢？

輸入mongod 列印：

liudeMacBook-Air:~ liu$ mongod2016-05-09T15:05:42.632+0800 I CONTROL  [initandlisten] MongoDB starting : pid=867 port=27017 dbpath=/data/db 64-bit host=liudeMacBook-Air.local2016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten] db version v3.2.32016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten] git version: b326ba837cf6f49d65c2f85e1b70f6f31ece79372016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten] allocator: system2016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten] modules: none2016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten] build environment:2016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten]     distarch: x86_642016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten]     target_arch: x86_642016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten] options: {}2016-05-09T15:05:42.633+0800 I STORAGE  [initandlisten] exception in initAndListen: 29 Data directory /data/db not found., terminating2016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten] dbexit:  rc: 100

環境：osx（mac）

回複內容：

問題描述：

  使用命令：mongod --config /usr/local/etc/mongod.conf 無法啟動mongodb，也不列印任何資訊。之前用的都好好的，請問是什麼原因呢？

輸入mongod 列印：

liudeMacBook-Air:~ liu$ mongod2016-05-09T15:05:42.632+0800 I CONTROL  [initandlisten] MongoDB starting : pid=867 port=27017 dbpath=/data/db 64-bit host=liudeMacBook-Air.local2016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten] db version v3.2.32016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten] git version: b326ba837cf6f49d65c2f85e1b70f6f31ece79372016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten] allocator: system2016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten] modules: none2016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten] build environment:2016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten]     distarch: x86_642016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten]     target_arch: x86_642016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten] options: {}2016-05-09T15:05:42.633+0800 I STORAGE  [initandlisten] exception in initAndListen: 29 Data directory /data/db not found., terminating2016-05-09T15:05:42.633+0800 I CONTROL  [initandlisten] dbexit:  rc: 100

環境：osx（mac）

從錯誤訊息來看，很明確地說明了/data/db不存在，應該先檢查這點。

2016-05-09T15:05:42.633+0800 I STORAGE [initandlisten] exception in initAndListen: 29 Data directory /data/db not found., terminating

如有必要先建立這個目錄再試

sudo mkdir /data/db

