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/

vi /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 start

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.

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)

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

不需要纠结依赖项的问题。

更多内容请参考官方文档。