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Pi-Hypriot OS installation instructions for Display Assembly

Network Config

To be able to reproduce network partitioning and still have access to node we'll have two networks configured for each PI.

  • Ethernet network will be used by clustering cross node communications. Default IPs are 192.168.1.10X here. All nodes must be connected with ethernet switch.
  • WiFi will be used for all other communications: Akka management, Akka persistence, REST endpoints. Default IPs are 192.168.8.10X. Laptop communicates with nodes via WiFi only

Network diagram

Laptop config

On your Mac, add the following entries to your /etc/hosts file:

192.168.8.100 node-0
192.168.8.101 node-1
192.168.8.102 node-2
192.168.8.103 node-3

Also you need to join the same WiFi network that PI Cluster is in.

As next step you need to configure password-less login. Procedure is described [here](../Hypriot-OS-Course-Preparation-Instructions.md#Configure password-less login)

Preparing SD cards with linux image

With support for cloud-init being present in the Hypriot OS distribution, we switch to using this tool instead starting from a standard installation and then going through a lengthy manual install.

The installation is now relatively simple:

Download and install the Hypriot flash tool by following the instructions in the Installation section here.

Using the akka-pi-os-display.yml file in this repo, a 16GB micro SD card and a flash card reader/writer, you are now set to flash an SD card.

You will need to customise several parameters in the .yml:

  • ethernet IP-address of the node. Here you need to change static ip_address=192.168.1.100/24 to node ethernet IP
  • WiFi IP-address of the node. Here you need to change static ip_address=192.168.8.100/24 to node WiFi IP
  • add your WiFi ssid and password. Update following piece
network = {
              ssid="GL-MT300N-V2-e9f"
              psk="goodlife"
          }

Download and install the Hypriot flash tool by following the instructions in the Installation section here.

Pi-Akka-Cluster git:(master) ✗ flash -n node-0 -u akka-pi-os-display.yml \
   https://github.com/hypriot/image-builder-rpi/releases/download/v1.12.0/hypriotos-rpi-v1.12.0.img.zip

-n node-0 specifies the host name for the node. For other nodes, set it to a name of the host this card is destined for (node-0 through node-4)

Next you need to insert SD cards to PIs and start your nodes. It takes 4-5 min for them to finish configuration and start for the first time