安裝MONGODB 3.0.6的時候提示警告信息，如下：
2015-09-09T11:04:35.011+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2015-09-09T11:04:35.011+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2015-09-09T11:04:35.011+0800 I CONTROL [initandlisten]
2015-09-09T11:04:35.011+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2015-09-09T11:04:35.011+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2015-09-09T11:04:35.011+0800 I CONTROL [initandlisten]
有人說，執行如下命令：
echo "never" > /sys/kernel/mm/transparent_hugepage/enabled
echo "never" > /sys/kernel/mm/transparent_hugepage/defrag
但是，在執行之前去查看enabled和defrag文件的話，已經是never狀態，因此根本不是這個問題。
最后確認發現是缺少了以下的依賴包，安裝即可：
gcc-4.4.7-16.el6.x86_64.rpm
gcc-c++-4.4.7-16.el6.x86_64.rpm
libgcc-4.4.7-16.el6.x86_64.rpm
libgomp-4.4.7-16.el6.x86_64.rpm
libstdc++-4.4.7-16.el6.x86_64.rpm
libstdc++-devel-4.4.7-16.el6.x86_64.rpm