Build Instructions

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• 1

  burn the sd card and prepare ssh

  I used Raspbian Buster Lite from here

  i burned it on the microSD card using Rufus

  then plugg your freshly burned SD card in the raspberry pi

  power the pi using the micro USB.

  connect a screen and a USB keyboard (or setup ssh directly by adding a empty file called ssh in the boot partition of the sd card)

  1) enable ssh with raspi-config under interfacing option
  

  2) setup the keyboard layout using raspi-config

  3) change the password using again raspi-config

  4) set hostname with raspi-config

  5) setup a static ip adress by edditing /etc/dhcpd.conf

  6) login via ssh and create.ssh

  7) put your public key in .ssh/authorized_keys

  8) sudo apt update && sudo apt upgrade -y

  9) sudo reboot now

  now your pi is ready

• 2

  setup RAID

  The objective is to have a safer way of storing the datas and a bigger storage than what the pi can offer with the SD card alone

  sudo apt-get install mdadm

  sudo dd if=/dev/zero of=/dev/sda bs=256M count=1

  sudo dd if=/dev/zero of=/dev/sdb bs=256M count=1

  (be careful. this wipe the content of your stick)

  sudo parted /dev/sda
          mklabel gpt
          print
          mkpart primary 0% 100%
          print
          quit
  

  sudo parted /dev/sdb
          mklabel gpt
          print
          mkpart primary 0% 100%
          print
          quit

  sudo mdadm --create --verbose /dev/md0 --level=mirror --raid-devices=2 /dev/sda1 /dev/sdb1

  sudo -i                (it dont work with sudo for some reason)
  mdadm --detail --scan >> /etc/mdadm/mdadm.conf
  exit

  sudo mkfs.ext4 -v -m .1 -b 4096 -E stride=32,stripe-width=64 /dev/md0

  sudo mount /dev/md0 /mnt
  sudo chmod -R 777 /mnt

  sudo df -h

  if you loose a drive due to weak power supply, you can re-add it with : 

  mdadm /dev/md0 -a /dev/sdX0

  then edit the max_usb_current=1 in /boot/config.txt

  sudo nano /boot/config.txt 
  max_usb_current=1

  you should now see youre raid

  sudo blkid

  note hte id of your RAID

  sudo nano /etc/fstab

  add the followinf line (replace X with your id) : 

  UUID=XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX /mnt ext4 defaults 0 0

  sudo reboot now

  once rebooted you should now see your raid mount in /mnt

  sudo df -h
  

• 3

  setup Log2Ram

  This step is optional but greatly recommand to extend the lifetime of your server.

  cd /home/pi

  sudo apt-get install git lsof mdadm -y git

  git clone https://github.com/azlux/log2ram.git

  cd log2ram

  chmod +x install.sh

  sudo ./install.sh

  sudo nano /etc/log2ram.conf

  set size  the buffer size from 40 to 128 megabyte

  sudo reboot now

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