最近想尝试一下英特尔的基于WebRTC协同通信开发套件，其中的CS_WebRTC_Conference_Server_MCU依赖MongoDB。
MongoDB是什么？
MongoDB 是一个基于分布式文件存储的数据库。由 C++ 语言编写。旨在为 WEB 应用提供可扩展的高性能数据存储解决方案。
MongoDB 是一个介于关系数据库和非关系数据库之间的产品，是非关系数据库当中功能最丰富，最像关系数据库的。
安装MongoDB
参考：https://docs.mongodb.org/getting-started/shell/tutorial/install-mongodb-on-red-hat/
https://docs.mongodb.org/getting-started/shell/tutorial/install-on-linux/
1、创建repovi /etc/yum.repos.d/mongodb-org-3.2.repo
[mongodb-org-3.2] name=MongoDB Repository baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.2/x86_64/ gpgcheck=0 enabled=1
2、安装MongoDB和相关工具
sudo yum install -y mongodb-org
3、启动MongoDB
sudo service mongod start4、验证MongoDB是否启动成功
cat /var/log/mongodb/mongod.log
查看是否有一句：[initandlisten] waiting for connections on port <port>
其中<port>是在/etc/mongod.conf中配置的，默认情况下是27017端口。
还有另一种方式：
# sudo service mongod status
Redirecting to /bin/systemctl status mongod.service
● mongod.service - High-performance, schema-free document-oriented database
Loaded: loaded (/usr/lib/systemd/system/mongod.service; disabled; vendor preset: disabled)
Active: active (running) since 一 2016-09-12 09:50:16 CST; 15s ago
Process: 8787 ExecStart=/usr/bin/mongod $OPTIONS run (code=exited, status=0/SUCCESS)
Main PID: 8842 (mongod)
CGroup: /system.slice/mongod.service
└─8842 /usr/bin/mongod --quiet -f /etc/mongod.conf run
9月 12 09:50:13 192.168.1.155 systemd[1]: Starting High-performance, schema-free document-oriented database...
9月 12 09:50:14 192.168.1.155 mongod[8787]: about to fork child process, waiting until server is ready for connections.
9月 12 09:50:14 192.168.1.155 mongod[8787]: forked process: 8842
9月 12 09:50:16 192.168.1.155 mongod[8787]: child process started successfully, parent exiting
9月 12 09:50:16 192.168.1.155 systemd[1]: Started High-performance, schema-free document-oriented database.会看到“Active: active (running)”，说明正在运行。
没有运行的情况：
# sudo service mongod status Redirecting to /bin/systemctl status mongod.service ● mongod.service - High-performance, schema-free document-oriented database Loaded: loaded (/usr/lib/systemd/system/mongod.service; disabled; vendor preset: disabled) Active: inactive (dead)Active: inactive (dead)
5、使MongoDB开机自动启动
sudo chkconfig mongod on
6、停止MongoDB
sudo service mongod stop
7、重启MongoDB
sudo service mongod restart
服务器配置: /etc/mongod.conf
# mongo.conf #where to log logpath=/var/log/mongo/mongod.log logappend=true #以追加方式写入日志 # fork and run in background fork = true #port = 27017 #端口 dbpath=/var/lib/mongo #数据库文件保存位置 directoryperdb=true # Enables periodic logging of CPU utilization and I/O wait #启用定期记录CPU利用率和 I/O 等待 #cpu = true # Turn on/off security. Off is currently the default # 是否以安全认证方式运行，默认是不认证的非安全方式 #noauth = true #auth = true # Verbose logging output. # 详细记录输出 #verbose = true # Inspect all client data for validity on receipt (useful for # developing drivers)用于开发驱动程序时的检查客户端接收数据的有效性 #objcheck = true # Enable db quota management 启用数据库配额管理，默认每个db可以有8个文件，可以用quotaFiles参数设置 #quota = true # 设置oplog记录等级 # Set oplogging level where n is # 0=off (default) # 1=W # 2=R # 3=both # 7=W+some reads #oplog = 0 # Diagnostic/debugging option 动态调试项 #nocursors = true # Ignore query hints 忽略查询提示 #nohints = true # 禁用http界面，默认为localhost：28017 # Disable the HTTP interface (Defaults to localhost:27018).这个端口号写的是错的 #nohttpinterface = true # 关闭服务器端脚本，这将极大的限制功能 # Turns off server-side scripting. This will result in greatly limited # functionality #noscripting = true # 关闭扫描表，任何查询将会是扫描失败 # Turns off table scans. Any query that would do a table scan fails. #notablescan = true # 关闭数据文件预分配 # Disable data file preallocation. #noprealloc = true # 为新数据库指定.ns文件的大小，单位:MB # Specify .ns file size for new databases. # nssize = <size> # Accout token for Mongo monitoring server. #mms-token = <token> # mongo监控服务器的名称 # Server name for Mongo monitoring server. #mms-name = <server-name> # mongo监控服务器的ping 间隔 # Ping interval for Mongo monitoring server. #mms-interval = <seconds> # Replication Options 复制选项 # in replicated mongo databases, specify here whether this is a slave or master 在复制中，指定当前是从属关系 #slave = true #source = master.example.com # Slave only: specify a single database to replicate #only = master.example.com # or #master = true #source = slave.example.com
进入Mongo命令行
# mongo MongoDB shell version: 2.6.12 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: 2016-09-12T09:50:14.195+0800 [initandlisten] 2016-09-12T09:50:14.195+0800 [initandlisten] ** WARNING: Readahead for /var/lib/mongodb is set to 4096KB 2016-09-12T09:50:14.195+0800 [initandlisten] ** We suggest setting it to 256KB (512 sectors) or less 2016-09-12T09:50:14.195+0800 [initandlisten] ** http://dochub.mongodb.org/core/readahead >
小结
通过yum安装是非常简单方便的，不需要纠结依赖项的问题。
更多内容请参考官方文档。