Deploy Open Network Operating System in CENTOS 7

Hi Everyone, I think it's time to change our perception with network. Nowadays, Network Operating System be Trend for simplest and faster service delivery. There is a lot of NOS were researched, deployed, tested, due to achieve the Network Automatization concept

ONOS, Open Network Operating System, is a newly released open-source SDN controller that is focused on service provider use-cases. Similar to OpenDaylight, the platform is written in Java and uses Karaf/OSGi for functionality management. - SDNHub.org

The Open Network Operating System (ONOS) is a software defined networking (SDN) OS for service providers that has scalability, high availability, high performance and abstractions to make it easy to create apps and services. The platform is based on a solid architecture and has quickly matured to be feature rich and production ready. The community has grown to include over 50 partners and collaborators that contribute to all aspects of the project including interesting use cases such as CORD. - onosproject.org

I see there are a lot of tutorial build ONOS based debian os. And a little of them, make it above centos or RHEL. I just want to write my experience build onos from scratch above centos os. I try to build it based on CENTOS 7. Because I installed Centos 7 with minimal install, so to build up the ONOS. I need some software that supported, like: wget, github, nmap, and also download karaf and maven, because the platform is weitten in Java and the functinality management uses Karaf or you may fammiliar with OSGi (Open Service Gateway Initiative, refer this link to know more: http://www.javaworld.com/article/2077837/java-se/hello--osgi--part-1--bundles-for-beginners.html)

There are many tutorial ONOS installation, but they use ubuntu as Core OS. So, here, I want to try to build ONOS based on Centos 7. It's easy when you Install it from scratch. Below the installation flow, that I use to deploy ONOS om Centos 7:

Install Environment Tools
In this step, we need successor tools to deploy ONOS, like wget and git (if you installed centos 7 with minimal install method)
```
yum install -y wget net-tools
yum install git -y
```
Open port in firewalld for onos application:
on Centos 7, there is firewalld was installed, you should open the ports that ONOS use to communicate with external network, the ONOS ports are:
a. 8181 for web
b. 6633 for listener
c. 8081 for karaf console
```
systemctl start firewalld
firewall-cmd --zone=public --add-port=8181/tcp --permanent
firewall-cmd --zone=public --add-port=6633/tcp --permanent
firewall-cmd --zone=public --add-port=8101/tcp --permanent
systemctl restart firewalld
```
After that verifying, make sure those ports are allowed/opened
```
firewall-cmd --zone=public --list-all
```

Clone ONOS Project from git repository

cd ~/
git clone https://gerrit.onosproject.org/onos

Check the branch master to update repo git

cd onos
git checkout master             # checks out 'master' as the working branch
git pull --rebase origin master # pulls the latest code from Gerrit, and rebases any local changes onto origin/master

Download Apache Maven and Karaf
Create Folder Downloads and Application.

cd ~
pwd #make sure pwd under root
mkdir Downloads Applications

Download Apache Maven and Karaf

cd Downloads
wget http://archive.apache.org/dist/karaf/3.0.5/apache-karaf-3.0.5.tar.gz #download karaf 3.0.5
wget http://archive.apache.org/dist/maven/maven-3/3.3.9/binaries/apache-maven-3.3.9-bin.tar.gz #download maven 3.3.9

Unzip with Tar Apache Maven and Karaf to Application Folder

tar -zxvf apache-karaf-3.0.5.tar.gz -C ../Applications/ #untar karaf to Applications/
tar -zxvf apache-maven-3.3.9-bin.tar.gz -C ../Applications/ #untar maven to Application/

Editing Karaf
add script "mvn:org.onosproject/onos-features/1.5.0-SNAPSHOT/xml/features" in org.apache.karaf.features.cfg

cd ~/Applications/apache-karaf-3.0.5/etc/
vi org.apache.karaf.features.cfg

Change the ip "0.0.0.0" instances to "127.0.0.1" in org.apache.karaf.management.cfg

vi org.apache.karaf.management.cfg

Install JAVA 8
Download JAVA 8

wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u45-b14/jdk-8u45-linux-x64.rpm"

Install JAVA 8

rpm -ivh jdk-8u45-linux-x64.rpm

bashsrc setting
Adding ONOS parameter on JAVA environment to build up ONOS Module

cat >> ~/.bashrc << EOF
export ONOS_ROOT=~/onos
source $ONOS_ROOT/tools/dev/bash_profile
export JAVA_HOME=/usr/java/jdk1.8.0_45/
export JRE_HOME=/usr/java/jdk1.8.0_45/jre/
export KARAF_ROOT=/root/Applications/apache-karaf-3.0.5
export M2_HOME=/root/Applications/apache-maven-3.3.9
export ONOS_USER=root
export ONOS_GROUP=root
export ONOS_IP=w.x.y.z #Your IP Interface to reach ONOS
EOF

source ~/.bashrc #need investigate

Building ONOS
```
cd ~/onos
mvn clean install
```
Packaging ONOS tar.gz or zip distributions after Build Complete
```
op
```
Starting onos
```
source tools/dev/bash_profile
ok clean
```
Open web GUI

Username : karaf
Password : karaf

After login

Access The console (Karaf console)

ssh w.x.y.z@8101
Username : karaf
Password : karaf