mongodb 3.2.x 启动 Warning 错误处理

[root@restore1 data1]# mongod --dbpath=/data/data1/mongodb_data/  --directoryperdb
** WARNING: You are running this process as the root user, which is not recommended.
** WARNING: You are running on a NUMA machine.
**          We suggest launching mongod like this to avoid performance problems:
**              numactl --interleave=all mongod [other options]
** 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'
** WARNING: soft rlimits too low. rlimits set to 30000 processes, 65530 files. Number of processes should be at least 32765 : 0.5 times number of files.

[root@restore1 data1]# echo never>/sys/kernel/mm/transparent_hugepage/enabled
[root@restore1 data1]# echo never>/sys/kernel/mm/transparent_hugepage/defrag
[root@restore1 data1]# cat /etc/security/limits.conf
#--------------------------------------------------
#此处经过测试知：只要 nproc * 2【0.5倍的nofile】 >= nofile > 32767【推荐】
* - nproc  65538
* - nofile 65536
#--------------------------------------------------

[root@restore1 data1]# numactl --interleave=all mongod --dbpath=/data/data1/mongodb_data/ --directoryperdb &
[]
[root@restore1 data1]# --12T11::49.699+ I CONTROL  [initandlisten] MongoDB starting : pid= port= dbpath=/data/data1/mongodb_data/ -bit host=restore1
--12T11::49.699+ I CONTROL  [initandlisten] db version v3.2.4
... ...

mongodb shell 编写js脚本：循环遍历

var cols=db.getCollectionNames();
for (var i=0 ;i<cols.length;i++) { 
　　var n=cols[i]; 
　　var v=db.getCollection(n).count(); 
　　print (n.pad(30,true) + " : " + v); 
}