## Download files from 
https://clusterhat.com/setup-software
NOTE: Download two files that are complete sets of images.

## USB Boot download
http://dist.8086.net/clusterhat/ClusterHAT-2017-11-29-lite-2-usbboot.zip


## Unzip img files.
unzip ClusterHAT-2017-11-29-lite-2-usbboot.zip
unzip ClusterHAT-2018-03-13-1-ALL.zip

Username: pi
Password: clusterhat

# Create a wpa_supplicant.conf file
# see example
vi wpa_supplicant.conf

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=US

network={
    ssid="TEST-LAB"
    psk="testlab2018"
}


# Determine which disk

diskutil list

# diskutil unmountDisk /dev/disk<disk# from diskutil>
# sudo dd bs=1m if=image.img of=/dev/rdisk<disk# from diskutil> conv=sync

# RPI #1
diskutil unmountDisk /dev/disk2
sudo dd bs=1m if=ClusterHAT-2018-03-13-lite-1-p1.img of=/dev/rdisk2 conv=sync
touch /Volumes/boot/ssh
cp wpa_supplicant.conf /Volumes/boot/
diskutil unmountDisk /dev/disk2

# RPI #2
diskutil unmountDisk /dev/disk2
sudo dd bs=1m if=ClusterHAT-2018-03-13-lite-1-p2.img of=/dev/rdisk2 conv=sync
touch /Volumes/boot/ssh
cp wpa_supplicant.conf /Volumes/boot/
diskutil unmountDisk /dev/disk2

# RPI #3
diskutil unmountDisk /dev/disk2
sudo dd bs=1m if=ClusterHAT-2018-03-13-lite-1-p3.img of=/dev/rdisk2 conv=sync
touch /Volumes/boot/ssh
cp wpa_supplicant.conf /Volumes/boot/
diskutil unmountDisk /dev/disk2

# RPI #4
diskutil unmountDisk /dev/disk2
sudo dd bs=1m if=ClusterHAT-2018-03-13-lite-1-p4.img of=/dev/rdisk2 conv=sync
touch /Volumes/boot/ssh
cp wpa_supplicant.conf /Volumes/boot/
diskutil unmountDisk /dev/disk2

# RPI Controller
diskutil unmountDisk /dev/disk2
sudo dd bs=1m if=ClusterHAT-2018-03-13-1-controller.img of=/dev/rdisk2 conv=sync
touch /Volumes/boot/ssh
cp wpa_supplicant.conf /Volumes/boot/
diskutil unmountDisk /dev/disk2

# RPI Controller USB Boot
diskutil unmountDisk /dev/disk2
sudo dd bs=1m if=ClusterHAT-2017-11-29-lite-2-usbboot.img of=/dev/rdisk2 conv=sync
touch /Volumes/boot/ssh
cp wpa_supplicant.conf /Volumes/boot/
diskutil unmountDisk /dev/disk2

# Establish ssh
# Assumes no public/private key on the Controller Pi

ssh-keygen -t rsa

## Press enter to save the key at the standard location (/home/pi/.ssh/id_rsa),
## you can optionally enter a passphrase but you will need to enter this every 
## time you access the key.

# Copy your public SSH key to the Pi Zeros 
for I in 1 2 3 4; do echo "Copying to p$I.local";ssh-copy-id pi@p$I.local;done

## For each Pi you will need to type "yes" to connect if you haven't already 
## previously logged into the Zero from the Controller using SSH and then 
## enter your password.

## You will now be able to log into the Pi Zeros using SSH without any key

ssh pi@p1.local

## To run a command on all Pi Zeros sequentially you can reuse a portion 
## of the above command.

for I in 1 2 3 4; do echo -n "p$I:";ssh pi@p$I.local uptime;done

## You should see something similar to the output below which shows how 
## long each Pi Zero has been booted, number of users, etc.



## Alternatively for USB Boot
ssh-keygen -t rsa -N "" -f ~/.ssh/id_rsa
mkdir -p /var/lib/clusterhat/nfs/p{1,2,3,4}/home/pi/.ssh/
cat ~/.ssh/id_rsa.pub >> /var/lib/clusterhat/nfs/p1/home/pi/.ssh/authorized_keys
cat ~/.ssh/id_rsa.pub >> /var/lib/clusterhat/nfs/p2/home/pi/.ssh/authorized_keys
cat ~/.ssh/id_rsa.pub >> /var/lib/clusterhat/nfs/p3/home/pi/.ssh/authorized_keys
cat ~/.ssh/id_rsa.pub >> /var/lib/clusterhat/nfs/p4/home/pi/.ssh/authorized_keys