啟動mongo warning

一、

# mongo

MongoDB shell version: 3.0.2

connecting to: test

Server has startup warnings: 

2015-05-09T12:34:19.688-0700 I CONTROL  [initandlisten] 

2015-05-09T12:34:19.688-0700 I CONTROL  [initandlisten] ** WARNING: soft rlimits too low. rlimits set to 1024 processes, 64000 files. Number of processes should be at least 32000 : 0.5 times number of files.

> 

mongodb目前限制：1024 processes, 64000 files

mongodb建議要求：processes = 0.5*files=32000（至少）

是以需要将 processes  從1024 改為 32000 或更大.

[[email protected] ~]# vi /etc/profile       #全局修改

ulimit -u 64000

二、

WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.We suggest setting it to 'never'

WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.We suggest setting it to 'never'

echo "never" > /sys/kernel/mm/transparent_hugepage/enabled

echo "never" > /sys/kernel/mm/transparent_hugepage/defrag

将其加入/etc/rc.local