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06-extraStuff.md

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Some extra things that can be done

Making an image of the compute node OS

  • On a Linux laptop (or with a USB SD card reader) take an image of this:
dd if=/dev/mmcblk0 of=node.img
  • Copy node.img to the master Raspberry Pi's home directory.

Setup PXE booting

Download the pxe-boot scripts:

git clone https://github.com/carpentriesoffline/pxe-boot.git
cd pxe-boot
./pxe-install

Initalise a PXE node:

./pxe-add <serial number> ../node.img <IP address>  <node name> <mac address>

for example:

./pxe-add fa917c3a ../node.img 192.168.5.105 pixie002 dc:a6:32:af:83:d0

This will create an entry with the serial number in /pxe-boot and /pxe-root.

  • Copy the Slurm config to the node filesystems
cp /etc/slurm/slurm.conf /pxe-root/*/etc/slurm/

Test PXE booting

  • Boot up a client
  • Run sinfo to see if the cluster is working You should see something like
PARTITION     AVAIL  TIMELIMIT  NODES  STATE NODELIST
pixiecluster*    up   infinite      5   idle pixie[002-006]

Links: