Raspberry Pi cluster modular holder

# Raspberry pi cluster

This is my little project to train for CKA on a raspberry pi cluster.
My own cluster has 8 nodes (3 controllers / 5 workers) and is powered trough PoE.
It is complemented by a 256GB USB3 stick per raspberry to have some persistent storage.


## Bill of materials

| Item | Quantity | Unit price | Total |
| - | - | - | - |
| [Raspberry Pi 4 4Gb](https://www.amazon.com.be/-/en/4595-Raspberry-Pi-Model-4GB/dp/B09TTNF8BT) | 8 | 79.38 € | 635.04 € |
| [Rasbperry Pi PoE Hat](https://www.amazon.com.be/-/en/Power-Ethernet-Raspberry-802-3af-Compliant-Official/dp/B096YXVMWS) | 8 | 22.42 € | 179.36 € |
| [MicroSD Card 64GB](https://www.amazon.com.be/-/en/SanDisk-SDSQUA4-064G-GN6MA-microSDXC-Adapter-Approved/dp/B08GYBBBBH) | 8 | 8.33 € | 66.64 € |
| [USB3 sticks 256GB](https://www.amazon.com.be/dp/B08JD3DSTJ?psc=1&ref=ppx_yo2ov_dt_b_product_details) | 8 | 17.99 € |