工欲善其事，必先利其器。在部署SDN实践时，通常需要安装OVS和控制器等软件，经历过的同学都知道，很多时候会被一些细节卡住，影响生产效率。有时由于实验需要还需要多次部署同样的内容，重复进行多遍同样的命令，浪费时间。所以很有必要将安装过程转化为一键安装脚本。本文总结的一键安装脚本就是在部署ONOS集群时，为提高安装ONOS效率而整理的，希望能帮助到同样需要多次安装ONOS的其他人。
安装脚本
安装脚本将安装ONOS及其依赖软件的所有命令都写到了shell文件，并加一些必要判断语句，使得安装脚本使用起来更加人性化。需要注意的是，此文件仅完成了ONOS的安装，并没有完成ONOS启动之前的配置，需要启动相关服务，还需手动进行配置。脚本内容如下所示：
- sh
- #!/bin/bash
- #make sure only root can run our script.
- if [ "$(id -u)" != "0" ]; then
- echo "You need to be 'root' dude." 1>&2
- exit 1
- fi
- _version="1.0"
- echo "========================INSTALL ONOS======================="
- # Download and unzip apache-karaf
- if [ -d /root/Applications ]
- then
- cd /root/Applications
- else
- mkdir /root/Applications
- cd /root/Applications
- fi
- if [ -f apache-karaf-3.0.2.tar.gz ]
- then
- echo "apache-karaf-3.0.2.tar.gz has exist"
- else
- wget http://apache.fayea.com/karaf/3.0.2/apache-karaf-3.0.2.tar.gz
- tar -xzf apache-karaf-3.0.2.tar.gz
- fi
- # Download and install apache-maven
- if [ -f apache-maven-3.2.5-bin.tar.gz ]
- then
- echo "apache-maven-3.2.5.bin.tar.gz has exist"
- else
- wget http://mirror.bit.edu.cn/apache/maven/maven-3/3.2.5/binaries/apache-maven-3.2.5-bin.tar.gz
- tar -xzf apache-maven-3.2.5-bin.tar.gz
- mv apache-maven-3.2.5 /usr/local/apache-maven
- # set environment
- echo "export M2_HOME=/usr/local/apache-maven" >> /etc/profile
- source /etc/profile
- echo "export PATH=$PATH:$M2_HOME/bin" >> /etc/profile
- source /etc/profile
- # in case of failure of setting environment
- export PATH=$PATH:$M2_HOME/bin
- fi
- # Install java-8-oracle
- if which java
- then
- echo "java-8 has been installed."
- else
- apt-get install python-software-properties
- sudo add-apt-repository ppa:webupd8team/java -y
- sudo apt-get update
- sudo apt-get install oracle-java8-installer oracle-java8-set-default -y
- # set JAVA_HOME
- echo "export JAVA_HOME=/usr/lib/jvm/java-8-oracle" >> /etc/profile
- source /etc/profile
- fi
- # show the info of java and maven to check.
- java -version
- mvn --version
- # Download ONOS
- if [ -d /home/onos ]
- then
- cd /home/onos
- else
- mkdir /home/onos
- cd /home/onos
- fi
- if which zip
- then
- echo "zip has been installed"
- else
- apt-get install zip
- fi
- if [ -f onos-$_version.zip ]
- then
- echo "onos-$_version.zip has exist"
- else
- wget https://github.com/opennetworkinglab/onos/archive/onos-$_version.zip
- unzip onos-$_version.zip
- # set environment of ONOS
- echo "export ONOS_ROOT=/home/onos/onos-onos-$_version" >> /etc/profile
- echo "export KARAF_ROOT=/root/Applications/apache-karaf-3.0.2" >> /etc/profile
- source /etc/profile
- source $ONOS_ROOT/tools/dev/bash_profile
- fi
- # Build ONOS
- cd onos-onos-$_version/
- mvn clean install
Note: 若需下载其他版本ONOS，直接修改下载源码部分和ONOS_ROOT即可，无需修改Karaf，maven，java8等内容。
初始化配置
在安装完ONOS之后，还需要进行一些必要的配置，才能启动运行了制定服务的ONOS。需要编辑$KARAF_ROOT/etc/org.apache.karaf.features.cfg文件，脚本中即为/root/Applications/apache-karaf-3.0.2/etc/org.apache.karaf.features.cfg。在该文件中的featuresRepositories部分和featuresBoot部分分别添加如下内容：
- Shell
- 12featuresRepositories：mvn:org.onosproject/onos-features/1.0.0/xml/features(逗号隔开，加到***即可)
- featuresBoot：onos-api,onos-core-trivial,onos-cli,onos-openflow,onos-app-fwd,onos-app-mobility,onos-gui
