【一】MongoDB安装及配置

wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel62-3.2.0.tgz
tar zxvf mongodb-linux-x86_64-rhel62-3.2.0.tgz

mv mongodb-linux-x86_64-rhel62-3.2.0 /usr/local/mongodb

vim /etc/profile
export PATH=/usr/local/mongodb/bin:$PATH
source /etc/profile

mkdir -p /data/db
mkdir -p /data/log
touch /data/log/mongodb.log

[root@node1 log]# mongod --dbpath=/data/db --fork --logpath=/data/log/mongodb.log  #默认启动27017端口
about to fork child process, waiting until server is ready for connections.
forked process: 45134
child process started successfully, parent exiting

--dbpath           #数据文件存储路径
--fork             #用子进程在后台启动，否则一直占有终端，用该参数时，必须指定logpath参数
--logpath          #日志文件的存储路径
--httpinterface    #网页管理mongodb接口，之前版本默认是开启的，由于安全性，本版本默认是关闭的，如需要加上该参数启动

[root@node1 ~]# mongo
MongoDB shell version: 3.2.0
connecting to: test
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: 
2015-11-29T11:04:05.002+0800 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2015-11-29T11:04:05.002+0800 I CONTROL  [initandlisten] 
2015-11-29T11:04:05.002+0800 I CONTROL  [initandlisten] 
2015-11-29T11:04:05.003+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is ‘always‘.
2015-11-29T11:04:05.003+0800 I CONTROL  [initandlisten] **        We suggest setting it to ‘never‘
2015-11-29T11:04:05.003+0800 I CONTROL  [initandlisten] 
2015-11-29T11:04:05.003+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is ‘always‘.
2015-11-29T11:04:05.003+0800 I CONTROL  [initandlisten] **        We suggest setting it to ‘never‘
2015-11-29T11:04:05.003+0800 I CONTROL  [initandlisten] 
> 2+3
5

mongod --dbpath=/data/db --fork --logpath=/data/log/mongodb.log --shutdown