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当前限制：1024 processes, 64000 files
mongodb建议要求：processes = 0.5*files=32000（至少）
所以需要将 processes 从1024 改为 32000 或更大.
[root@localhost ~]# 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
