MongoDB 基本安装配置
下载软件，版本 mongodb-linux-x86_64-2.0.2.tgz解压缩后的目录：mongodb-linux-x86_64-2.0.2然后转移到目录 /usr/local/mongodb
下载软件，，版本 mongodb-linux-x86_64-2.0.2.tgz
解压缩后的目录：mongodb-linux-x86_64-2.0.2
然后转移到目录 /usr/local/mongodb
建立相应的数据存放目录和日志目录
mkdir /usr/local/mongodb/{data,log}
简单的启动服务
执行/usr/local/mongod 就可以了，但是这样一但退出终端，服务业就停止了
以后台方式运行
/usr/local/mongod --dbpath=/usr/local/mongodb/data --logpath=/usr/local/mongodb/log/mongdb.log --fork
Mongodb 有很多的参数，如数据存放路径、端口号、最大连接数等等。
/usr/local/mongod --dbpath=/usr/local/mongodb/data --logpath=/usr/local/mongodb/log/mongdb.log --config /etc/mongo.cnf --fork
随机启动 添加如下命令到 /etc/rc.d/rc.local
/usr/local/mongodb/bin/mongod --dbpath=/usr/local/mongodb/data --logpath=/usr/local/mongodb/log/mongodb.log --fork
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