1. Writing OS img file on SD Card:

1. Download the latest Raspbian image from http://www.raspberrypi.org/downloads

1. Use win32diskimager to write image on to sd card.

1. use the following command:

dd if='full path of image location' of='full path of sd card location' bs=4M

2. Required Installation:

Upon booting up Raspbian you will be brought to the a startup page, edit the setting if require, else move to finish.

After booting into Raspbian:

1) Do a sudo apt-get update 
2) Follow by a sudo apt-get upgrade
3) Reboot

Install the following packages after reboot:

1) sudo apt-get install glusterfs-server python-dev python-pip python-mpi4py
2) pip install Django=1.5.5
3) pip install -e git+https://github.com/scholrly/neo4django/#egg=neo4django
4) download the lastest PyCrypto package using 'wget http://ftp.dlitz.net/pub/dlitz/crypto/pycrypto/pycrypto-2.6.1.tar.gz'
5) tar zxf 'extract location'/pycrypto-2.6.1.tar.gz
6)  cd 'pycrypto dir',  python setup.py install
7) Reboot

3. Obtain project from Git repository and save it to the home dir '/home/pi'

4. Cloning of sd card image:

1. Use Win32DiskImager to create the img file for the sd card by using the "read function" and also not forgetting to input a file name, example: C:\Users\Jack\Desktop\onDemandEncrypt.img

1. using the dd if='sd card location' of=/home/pi/onDemandEncrypt.img bs=4M note: the sd card when mounted have 2 partition (example: sda, sda1), shown in /dev, select the whole sd card (sda)

After obtaining the image file, follow section 1 to write the image onto SD card.

5. Configure the communication between pi:

rename the hostname for raspberry pi to prevent confusion between devices. 
sudo nano /etc/hostname
After changing the hostname, edit the hosts file to allow other device able to ping to this raspberry pi
sudo vi /etc/hosts and edit the line that include 127.0.1.1, change the default hostname to the new hostname you created.

6. Configuring SSH authorize key:

 
1) Boot up the raspberry pi
2) ssh-keygen
note: just use the default and without passphase for the key
3) ssh-copy-id pi@hostname
note: hostname in term of other raspberry pi in the cluster.

Repet section 5 and 6 on all raspberry pi

7. Configure GlusterFS server

*Configure only on 1 of the raspberry pi in the cluster.
1) sudo gluster peer probe 'hostname'
note: hostname in terms of other raspberry pi in the cluster, if there is more than 1 raspberry pi, use space(' ') as a delimiter
2) Create gluster volume (example there is 3 raspberry pi in the cluster)
sudo gluster volume create "volume name" transport tcp hostname1:/data hostname2:/data hostname3:/data
3) To check created volume use  gluster volume info
4) Start the volume using  sudo gluster volume start 'volume name'

*Configure only on 1 of the raspberry pi in the cluster.
1) sudo apt-get install nginx
2) sudo pip install uwsgi
3) Edit src/one_nginx.conf 
    3.1) Make sure the one.sock is in the correct directory
    3.2) Edit the server_name to the raspberry pi IP address
    3.3) Make sure the directory for the location /static and location of uwsgi_params is correct.
4) Create soft link. sudo ln -s /home/pi/onDemandNetwork/src/one_nginx.conf /etc/nginx/sites-enabled/one
5) Remove default nginx web page,  sudo rm /etc/nginx/sites-enabled/default 

1) Edit src/one_uwsgi.ini
    1.1) Make sure all the directory listed in this file is correct, the '%(homepath)' is similar to putting '/home/pi'

1) sudo nano /etc/fstab and add in this line
    1.1) 'hostname:/'gluster volume name' /home/pi/onDemandNetwork/archive/encrypted glusterfs defaults,_netdev 0 0'
    note: hostname in terms of the raspberry pi hostname that is used to create the gluster volume.

1) in the Neo4J directory edit conf/neo4j-server.properties
    1.1) Add in 'org.neo4j.server.webserver.address=0.0.0.0' 
2) Run the Neo4J program and start database

1) Extract the database to the home directory.
2) in the Neo4J directory edit conf/neo4j-server.properties
    2.1) Add in 'org.neo4j.server.webserver.address=0.0.0.0' 
3) To start the database bin/neo4j start

NEO4J_DATABASES = {
    'default' : {
        'HOST':'192.168.1.1', #Edit the ip address to the desktop or laptop IP address that is installed with Neo4J
        'PORT':7474,  #Remain as default
        'ENDPOINT':'/db/data' #Remain as default
    }
}

1) sudo service nginx restart
2) cd into src directory, run this command: uwsgi --ini one_uwsgi.ini
3) On your desktop or laptop, go to http://webserverIP/main/login
note: desktop or laptop must belong to the same network as the raspberry pi cluster.