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titan-iac/knowledge/metis.md
jenkins 0da9e4c82d refactor: restructure services layout, retire oceanus, add aether scaffolding 
- Move flat service manifests into structured subdirs (apps/, bootstrap-jobs/,
  repair-jobs/, migration-jobs/, validation-jobs/, node-ops/, networking/)
- Retire oneoffs/ directories across services
- Remove oceanus cluster and its host roles; add aether cluster + terraform scaffolding
- Reorganize scripts/ into ops/, render/, sync/, manual-tests/
- Add Makefile with render/validate/test/flux targets and repo-structure tests
- Update flux-system application CRs to the new paths
- Add hermes-automated-triage-24h-plan knowledge doc (+ comms mirror)
- Refresh knowledge catalogs, dashboards, vmalert rules, quality contract

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-08-05 16:21:36 -03:00

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Metis (node recovery)

Node classes (current map)

  • rpi5 Ubuntu workers: titan-04,05,06,07,08,09,10,11 (Ubuntu 24.04.3, k3s agent)
  • rpi5 control-plane: titan-0a/0b/0c (Ubuntu 24.04.1, k3s server, control-plane taint)
  • rpi4 Armbian longhorn: titan-13/15/17/19 (Armbian 6.6.x, k3s agent, longhorn disks)
  • rpi4 Armbian standard: titan-12/14/18 (Armbian 6.6.x, k3s agent)
  • Jetson workers: titan-20/21 (Ubuntu 20.04.6, k3s agent)
  • amd64 agents: titan-22/24 (Debian 13, k3s agent)
  • Veles storage/simulation worker: titan-23 (Atlas worker with oceanus node-pool labels)
  • External/dedicated hosts: tethys, titan-db, titan-jh, plus any newcomers.

Longhorn disk UUIDs (critical nodes)

  • titan-13: /mnt/astreae UUID=6031fa8b-f28c-45c3-b7bc-6133300e07c6 (ext4); /mnt/asteria UUID=cbd4989d-62b5-4741-8b2a-28fdae259cae (ext4)
  • titan-15: /mnt/astreae UUID=f3362f14-5822-449f-944b-ac570b5cd615 (ext4); /mnt/asteria UUID=9c5316e6-f847-4884-b502-11f2d0d15d6f (ext4)
  • titan-17: /mnt/astreae UUID=1fecdade-08b0-49cb-9ae3-be6c188b0a96 (ext4); /mnt/asteria UUID=2fe9f613-d372-47ca-b84f-82084e4edda0 (ext4)
  • titan-19: /mnt/astreae UUID=4890abb9-dda2-4f4f-9c0f-081ee82849cf (ext4); /mnt/asteria UUID=2b4ea28d-b0e6-4fa3-841b-cd7067ae9153 (ext4)

Metis repo (~/Development/metis)

  • CLI skeleton in Go (cmd/metis), inventory loader (pkg/inventory), plan builder (pkg/plan).
  • inventory.example.yaml shows expected schema (classes + per-node overlay, Longhorn disks, labels, taints).

Next implementation steps

  • Add per-class golden image refs and checksums (Harbor or file://) when ready.
  • Implement burn execution: download with checksum, write via dd/etcher-equivalent, mount boot/root to inject hostname/IP/k3s tokens/labels/taints, journald/GC drop-ins, and Longhorn fstab entries. Add Windows writer (diskpart + wmic) and Linux writer (dd + sgdisk) paths.
  • Add Keycloak/SSH bootstrap: ensure ssh user, authorized keys, and k3s token/URL injection for agents; control-plane restore path with etcd snapshot selection.
  • Add per-host inventory entries for tethys, titan-db, titan-jh, and future dedicated hosts once audited.