Red5是一个流媒体服务器，可以用于实现视频直播、音频直播、视频点播、音频点播等多种应用场景。在CentOS系统上安装Red5服务器，可以为我们提供一个高效、稳定的流媒体服务平台。本文将介绍如何在CentOS系统上安装Red5服务器。
在安装Red5之前，我们需要先准备好CentOS系统。我们需要确保CentOS系统的网络连接正常，并且已经安装了Java运行环境。如果您的系统上没有安装Java，可以使用以下命令进行安装：
```
yum install java
安装完成后，可以使用以下命令检查Java版本：
java -version
如果显示类似于以下信息，则说明Java安装成功：
java version "1.8.0_191"
Java(TM) SE Runtime Environment (build 1.8.0_191-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode)
在安装Red5之前，我们需要先从官网上下载Red5服务器的安装包。可以使用以下命令在终端中下载Red5安装包：
wget -server/releases/download/v1.2.3/red5-server-1.2.3.tar.gz
下载完成后，可以使用以下命令将Red5安装包解压到指定目录：
tar zxvf red5-server-1.2.3.tar.gz -C /usr/local/
解压完成后，可以使用以下命令进入Red5服务器的安装目录：
cd /usr/local/red5-server-1.2.3/
在安装Red5服务器之前，我们需要先对Red5服务器进行一些基本的配置。可以使用以下命令编辑Red5服务器的配置文件：
vim /usr/local/red5-server-1.2.3/conf/red5.properties
在配置文件中，我们需要对以下几个参数进行配置：
# Red5服务器的端口号，默认为843
server.port=843
# Red5服务器的HTTP端口号，默认为5080
http.host=0.0.0.0
http.port=5080
# Red5服务器的RTMP端口号，默认为1935
rtmp.host=0.0.0.0
rtmp.port=1935
配置完成后，可以使用以下命令启动Red5服务器：
./red5.sh
如果启动成功，可以在终端中看到类似于以下信息：
[INFO] [main] org.red5.server.Launcher - Red5 Server 1.2.3 $Rev: 5953 $ ()
[INFO] [main] org.red5.server.Launcher - JVM arguments: -Djava.security.manager -Djava.security.policy=/usr/local/red5-server-1.2.3/conf/red5.policy -Xms256M -Xmx1024M -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=256M
[INFO] [main] org.red5.server.Launcher - Loading red5.properties
[INFO] [main] org.red5.server.Launcher - Red5 Server 1.2.3 starting up...
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Loading application...
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Default app context /red5
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:name=ConnectionManager
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:name=Server
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=ServerAdapter,name=ServerAdapter
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=StreamService,name=StreamService
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=WebSocketHandler,name=WebSocketHandler
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=JMXAgent,name=JMXAgent
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=Scheduler,name=Scheduler
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=ServiceInvoker,name=ServiceInvoker
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=ScopeResolver,name=ScopeResolver
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=ConsumerRegistry,name=ConsumerRegistry
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=ProviderRegistry,name=ProviderRegistry
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=StreamableFileFactory,name=StreamableFileFactory
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=StreamPublishSecurity,name=StreamPublishSecurity
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=StreamPlaybackSecurity,name=StreamPlaybackSecurity
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=StreamFilenameGenerator,name=StreamFilenameGenerator
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=StreamRecorderManager,name=StreamRecorderManager
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=ScopeStatistics,name=ScopeStatistics
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=ConnectionStats,name=ConnectionStats
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=ConnectionCounter,name=ConnectionCounter
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=ConnectionGroupStats,name=ConnectionGroupStats
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=ConnectionGroupCounter,name=ConnectionGroupCounter
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=PluginRegistry,name=PluginRegistry
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=PluginLoader,name=PluginLoader
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Registering MBean org.red5.server:type=PluginManager,name=PluginManager
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Application context initialized
[INFO] [main] org.red5.server.adapter.ApplicationAdapter - Startup done
在安装完成Red5服务器之后，我们可以使用Flash Media Live Encoder等工具测试Red5服务器的功能。可以使用以下命令在终端中启动Flash Media Live Encoder：
/opt/Adobe/Flash\ Media\ Live\ Encoder\ 3.2/FMLE.exe
