如果你的Linux没有Mongo最新的包，可以按官方说明添加上去，方法如下：

#新建Mogo的仓库的配置：
~$ vi /etc/yum.repos.d/mongodb-org-3.2.repo
#添加下面内容
[mongodb-org-3.2]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.2/x86_64/
gpgcheck=0
enabled=1
#使用下面安装最新Mongodb
~$ sudo yum install -y mongodb-org

安装完成，启动测试：

~$ /etc/init.d/mongod start
Starting mongod:                                           [  OK  ]
~$ ps aux |grep mongo
mongod   13084  2.7  0.8 394988 65700 ?        Sl   03:33   0:00 /usr/bin/mongod -f /etc/mongod.conf
root     13103  0.0  0.0 103304   848 pts/1    S+   03:33   0:00 grep mongo

链接测试：

~$ mongo localhost
MongoDB shell version: 3.2.0
connecting to: localhost
Welcome to the MongoDB shell.
For interactive help, type "help".
For more comprehensive documentation, see
	http://docs.mongodb.org/
Questions? Try the support group
	http://groups.google.com/group/mongodb-user
Server has startup warnings: 
2015-12-23T03:33:40.179+0000 I CONTROL  [initandlisten] 
2015-12-23T03:33:40.179+0000 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.

解决WARNING: soft rlimits too low.

~$ /etc/security/limits.d/99-mongodb-nproc.conf 
mongod soft nofile 64000
mongod hard nofile 64000
mongod soft nproc 32000
mongod hard nproc 32000

#保存重启
~$ service mongod restart
Stopping mongod:                                           [  OK  ]
Starting mongod:                                           [  OK  ]

#链接测试：
~$ mongo localhost
MongoDB shell version: 3.2.0
connecting to: localhost
>

设置开机自启动：

~$ chkconfig --list |grep mongo
mongod         	0:off	1:off	2:off	3:on	4:off	5:on	6:off
~$ chkconfig --level 345 mongod on

更多参考：
https://docs.mongodb.org/manual/reference/ulimit/
https://docs.mongodb.org/manual/tutorial/install-mongodb-on-red-hat/#install-mongodb
http://blog.csdn.net/kk185800961/article/details/45613267