下面我们在CentOS 6.5 x64系统上安装最新的MongoDB 2.6.0版。MongoDB v2.4.x版的软件仓库有两个包：1）mongo-10gen-server此包里
下面我们在CentOS 6.5 x64系统上安装最新的MongoDB 2.6.0版。
MongoDB v2.4.x版的软件仓库有两个包：
1）mongo-10gen-server
此包里面有最新版的mongod和mongos守护程序以及相关的配置和初始化脚本。
2）mongo-10gen
此包里面有最新版的所有MongoDB工具。这些工具方便你管理MongoDB系统。
但在MongoDB v2.6.0版的软件仓库一共有五个包：
1）mongodb-org
此包是元数据包，它可以实现自动安装下面的4个组件包。
2）mongodb-org-server
此包里面有mongod守护程序，以及相关的配置和初始化脚本。
3）mongodb-org-mongos
此包里面有mongos守护程序。
4）mongodb-org-shell
此包里面有mongo shell环境。
5）mongodb-org-tools
此包里面有以下的MongoDB工具：mongoimport、bsondump、mongodump、mongoexport、mongofiles、mongoimport、mongooplog、mongoperf、mongorestore、mongostat以及mongotop。
控制脚本：mongodb-org包里面有各种控制脚本，包括初始化脚本/etc/rc.d/init.d/mongod
使用/etc/mongod.conf配置文件来对MongoDB进行配置。
MongoDB 2.6.0版不再有mongos的控制脚本。mongos进程只用于分片的场景。你可以使用mongod初始化脚本来驱动mongos控制脚本。
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要安装最新的64位MongoDB 2.6.0版，步骤如下：
1、创建mongodb.repo文件
在/etc/yum.repos.d/目录下创建文件mongodb.repo，它包含MongoDB仓库的配置信息，内容如下：
[mongodb]
name=MongoDB Repository
baseurl=http://downloads-distro.mongodb.org/repo/RedHat/os/x86_64/
gpgcheck=0
enabled=1
2、执行安装命令
$ sudo yum install mongodb-org
Loaded plugins: security
base | 3.7 kB 00:00
base/primary_db | 4.4 MB 00:01
extras | 3.4 kB 00:00
extras/primary_db | 19 kB 00:00
mongodb | 951 B 00:00
mongodb/primary | 24 kB 00:16
mongodb 155/155
openlogic | 1.3 kB 00:00
openlogic/primary | 273 kB 00:00
openlogic 24/24
updates | 3.4 kB 00:00
updates/primary_db | 2.6 MB 00:00
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package mongodb-org.x86_64 0:2.6.0-1 will be installed
--> Processing Dependency: mongodb-org-tools = 2.6.0 for package: mongodb-org-2.6.0-1.x86_64
--> Processing Dependency: mongodb-org-shell = 2.6.0 for package: mongodb-org-2.6.0-1.x86_64
--> Processing Dependency: mongodb-org-server = 2.6.0 for package: mongodb-org-2.6.0-1.x86_64
--> Processing Dependency: mongodb-org-mongos = 2.6.0 for package: mongodb-org-2.6.0-1.x86_64
--> Running transaction check
---> Package mongodb-org-mongos.x86_64 0:2.6.0-1 will be installed
---> Package mongodb-org-server.x86_64 0:2.6.0-1 will be installed
---> Package mongodb-org-shell.x86_64 0:2.6.0-1 will be installed
---> Package mongodb-org-tools.x86_64 0:2.6.0-1 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
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