1，下载：
http://www.mongodb.org/downloads
2.4.5版：http://www.mongodb.org/dr/fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.5.tgz/download
2，解压：
hadoop@hadoopmaster:~/nosql$ tar zxvf mongodb-linux-x86_64-2.4.5 (1).tgz mongodb-linux-x86_64-2.4.5/README mongodb-linux-x86_64-2.4.5/THIRD-PARTY-NOTICES mongodb-linux-x86_64-2.4.5/GNU-AGPL-3.0 mongodb-linux-x86_64-2.4.5/bin/mongodump mongodb-linux-x86_64-2.4.5/bin/mongorestore mongodb-linux-x86_64-2.4.5/bin/mongoexport mongodb-linux-x86_64-2.4.5/bin/mongoimport mongodb-linux-x86_64-2.4.5/bin/mongostat mongodb-linux-x86_64-2.4.5/bin/mongotop mongodb-linux-x86_64-2.4.5/bin/mongooplog mongodb-linux-x86_64-2.4.5/bin/mongofiles mongodb-linux-x86_64-2.4.5/bin/bsondump mongodb-linux-x86_64-2.4.5/bin/mongoperf mongodb-linux-x86_64-2.4.5/bin/mongosniff mongodb-linux-x86_64-2.4.5/bin/mongod mongodb-linux-x86_64-2.4.5/bin/mongos mongodb-linux-x86_64-2.4.5/bin/mongo hadoop@hadoopmaster:~/nosql$ ls
3，创建目录用来存放数据和log日志
hadoop@hadoopmaster:~/nosql/mongodb-linux-x86_64-2.4.5$ ls bin GNU-AGPL-3.0 README THIRD-PARTY-NOTICES hadoop@hadoopmaster:~/nosql/mongodb-linux-x86_64-2.4.5$ mkdir data hadoop@hadoopmaster:~/nosql/mongodb-linux-x86_64-2.4.5$ mkdir log hadoop@hadoopmaster:~/nosql/mongodb-linux-x86_64-2.4.5$ hadoop@hadoopmaster:~/nosql/mongodb-linux-x86_64-2.4.5$ cd log/ hadoop@hadoopmaster:~/nosql/mongodb-linux-x86_64-2.4.5/log$ touch mongodb.log
4，启动
①：使用mongod命令建立一个mongodb数据库链接，
hadoop@hadoopmaster:~/nosql/mongodb-linux-x86_64-2.4.5/bin$ ./mongod -dbpath ../data/ --logpath ../log/mongodb.log all output going to: /home/hadoop/nosql/mongodb-linux-x86_64-2.4.5/bin/../log/mongodb.log log file [/home/hadoop/nosql/mongodb-linux-x86_64-2.4.5/bin/../log/mongodb.log] exists; copied to temporary file [/home/hadoop/nosql/mongodb-linux-x86_64-2.4.5/bin/../log/mongodb.log.2013-08-17T05-36-47]
数据库的路径为/mongodb/data，
日志路径为/mongodb/log/mongodb.log
也可以通过port指定端口号如：- -port=10000
通过接上fork参数在后台启动： --fork
5，连接：
hadoop@hadoopmaster:~/nosql/mongodb-linux-x86_64-2.4.5/bin$ ./mongo 127.0.0.1:10000 MongoDB shell version: 2.4.5 connecting to: 127.0.0.1:10000/test > dbsdbs Sat Aug 17 13:42:15.699 JavaScript execution failed: ReferenceError: dbs is not defined > dbdb test > show collectionsshow collections >
6，配置文件的方式启动：
配置：
hadoop@hadoopmaster:~/nosql/mongodb-linux-x86_64-2.4.5$ more mongodb.conf port=10000 dbpath=data/ logpath=log/mongodb.log logappend=true fork=true hadoop@hadoopmaster:~/nosql/mongodb-linux-x86_64-2.4.5$
启动：
hadoop@hadoopmaster:~/nosql/mongodb-linux-x86_64-2.4.5$ ./bin/mongod -f ./mongodb.conf about to fork child process, waiting until server is ready for connections. forked process: 4120 all output going to: /home/hadoop/nosql/mongodb-linux-x86_64-2.4.5/log/mongodb.log child process started successfully, parent exiting hadoop@hadoopmaster:~/nosql/mongodb-linux-x86_64-2.4.5$