mongodb3 设置用户名密码 ,linux

--29T09::19.328+ I CONTROL  [initandlisten] ** WARNING: You are running on a NUMA machine.
--29T09::19.328+ I CONTROL  [initandlisten] **          We suggest launching mongod like this to avoid performance problems:
--29T09::19.328+ I CONTROL  [initandlisten] **              numactl --interleave=all mongod [other options]
--29T09::19.328+ I CONTROL  [initandlisten]
--29T09::19.328+ I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
--29T09::19.328+ I CONTROL  [initandlisten] **        We suggest setting it to 'never'
--29T09::19.328+ I CONTROL  [initandlisten]
--29T09::19.328+ I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
--29T09::19.329+ I CONTROL  [initandlisten] **        We suggest setting it to 'never'
--29T09::19.329+ I CONTROL  [initandlisten]

===================消除警告====↓========================

yum install -y numactl
echo  > /proc/sys/vm/zone_reclaim_mode
# vi /proc/sys/vm/zone_reclaim_mode

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

如果是NUMA machine ，启动服务时bin下这样执行
numactl --interleave=all ./mongod --config /etc/mongodb.conf &
判读是不是MUMA
grep -i numa /var/log/dmesg
NUMA: Allocated memnodemap from 2f000 - 3f840
NUMA: Using 20 for the hash shift.
---------------------------------------------------------

1./etc/mongodb.conf
http://docs.mongodb.org/master/reference/configuration-options/
内容如下：

systemLog:
   destination: file
   path: "/app/mongodb/mongodb.log"
   logAppend: true
storage:
   journal:
      enabled: true
   dbPath: "/app/mongodb/data/db"
net:
   port:
processManagement:
   fork: true
security:
   authorization: disabled

2.请确保配置文件中的path和dbPath存在
3.
启动服务命：

./mongod --config /etc/mongodb.conf &
./mongo
use admin
// show users
// db.system.users.remove({user:"someuser"})
db.createUser(
{
    user: "admin",
    pwd: "qwerty",
    roles:
    [
      {
        role: "userAdminAnyDatabase",
        db: "admin"
      }
    ]
  }
)
// db.system.version.find()
db.system.version.update({ "_id" : "authSchema"},{$set: {"currentVersion" : } })
db.shutdownServer()

4.修改配置文件中的authorization 为 enabled
5.启动服务

./mongod --config /etc/mongodb.conf &
./mongo --port  -u admin -p 'qwerty' --authenticationDatabase admin
use logtest
db.createUser(
    {
        "user": "user001",
        "pwd": "asdfgh",
        "roles":[
            {
                "role": "dbOwner",
                "db": "logtest"
            }
        ]
    }
)

备注：没有关闭服务的权限时，重启需要ps&kill