One 、 Problem description ：

mongodb Alarm message appears after startup , The details are as follows: ：

Two 、 Solution ：

I don't say much nonsense , Specific solutions are given below ：

1、 Warning content ：

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

processing method ：

$ echo never /sys/kernel/mm/transparent_hugepage/enabled

Be careful ： Here you need to root Account operation , Restart after the operation mongodb.

2、 Warning content ：

WARNING: soft rlimits too low. rlimits set to 7145 processes, 65535 files. Number of processes should be at least 32767.5 : 0.5 times number of files.

processing method ：

$ sudo vim /etc/security/limits.conf

# limits.conf
#  Append the following fields at the end , Save and exit when finished 
* soft nproc 65535
* hard nproc 65535

Be careful ： Restart after the operation mongodb.