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photoncloud-monorepo/baremetal/vm-cluster/README.md
centra 5c6eb04a46 T036: Add VM cluster deployment configs for nixos-anywhere 
- netboot-base.nix with SSH key auth
- Launch scripts for node01/02/03
- Node configuration.nix and disko.nix
- Nix modules for first-boot automation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2025-12-11 09:59:19 +09:00

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QEMU Socket Networking VM Cluster

Architecture

Topology: 4 QEMU VMs connected via multicast socket networking (230.0.0.1:1234)

VMs:

  1. pxe-server (192.168.100.1) - Provides DHCP/TFTP/HTTP services
  2. node01 (192.168.100.11) - Cluster node
  3. node02 (192.168.100.12) - Cluster node
  4. node03 (192.168.100.13) - Cluster node

Network: All VMs share L2 segment via QEMU multicast socket (no root privileges required)

Files

  • node01.qcow2, node02.qcow2, node03.qcow2 - 100GB cluster node disks
  • pxe-server.qcow2 - 20GB PXE server disk
  • launch-pxe-server.sh - PXE server startup script
  • launch-node01.sh, launch-node02.sh, launch-node03.sh - Node startup scripts
  • pxe-server/ - PXE server configuration files

MACs

  • pxe-server: 52:54:00:00:00:01
  • node01: 52:54:00:00:01:01
  • node02: 52:54:00:00:01:02
  • node03: 52:54:00:00:01:03

Provisioning Flow

  1. Start PXE server VM (Alpine Linux with dnsmasq)
  2. Configure DHCP/TFTP/HTTP services
  3. Deploy NixOS netboot artifacts
  4. Start node VMs with PXE boot enabled
  5. Nodes PXE boot and provision via nixos-anywhere