linux下安装mongodb

解压：

创建数据文文件目录

[root@iZ281cu2lqjZ caoyf]# mkdir -p /data/db

[root@iZ281cu2lqjZ caoyf]# ls

jdk-7u79-linux-x64.gz mongodb-linux-x86_64-rhel62-3.2.3.gz

[root@iZ281cu2lqjZ caoyf]# chown caoyf /data/db

[root@iZ281cu2lqjZ caoyf]#

3.启动，进入目录下执行mongod

执行mongo 结果如下，成功。

[caoyf@iZ281cu2lqjZ bin]$ ./mongo

MongoDB shell version: 3.2.3

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:

2016-03-09T22:38:45.561+0800 I CONTROL [initandlisten]

2016-03-09T22:38:45.561+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.

2016-03-09T22:38:45.561+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'

2016-03-09T22:38:45.561+0800 I CONTROL [initandlisten]

2016-03-09T22:38:45.561+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.

2016-03-09T22:38:45.561+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'

2016-03-09T22:38:45.562+0800 I CONTROL [initandlisten]

2016-03-09T22:38:45.562+0800 I CONTROL [initandlisten] ** WARNING: soft rlimits too low. rlimits set to 4096 processes, 65535 files. Number of processes should be at least 32767.5 : 0.5 times number of files.

2016-03-09T22:38:45.562+0800 I CONTROL [initandlisten]

>

4.测试创建数据：

> use testuse test

switched to db test

> db.users.insert ({username:caoyf});db.users.insert ({username:caoyf});

2016-03-09T22:42:38.206+0800 E QUERY [thread1] ReferenceError: caoyf is not defined :

@(shell):1:19

> db.users.find()db.users.find()

> db.users.insert ({username:"caoyf"});db.users.insert ({username:"caoyf"});

WriteResult({ "nInserted" : 1 })

> db.users.find()db.users.find()

{ "_id" : ObjectId("56e03676ce9094ebef401280"), "username" : "caoyf" }

> db.users.count()db.users.count()

成功，没有问题；