infra/docs/architecture
Viktor Barzin 037a609f27
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k8s-version-upgrade: unblock 1.34.9 — skip kubeadm CoreDNS addon + busybox-date fix
The 1.34.9 master upgrade hard-failed `kubeadm upgrade apply` preflight: CoreDNS
is at v1.12.4 (Keel auto-bumped it 1.12.1 -> 1.12.4 on 2026-05-26 via a stale
kube-system out-of-band annotation), and 1.12.4 is ahead of kubeadm 1.34.9's
bundled corefile-migration table ("start version not supported").

- scripts/update_k8s.sh: master `kubeadm upgrade apply` now runs with
  `--ignore-preflight-errors=CoreDNSMigration,CoreDNSUnsupportedPlugins
  --skip-phases=addon/coredns`. A dry-run proved --ignore ALONE would overwrite
  our custom split-horizon Corefile with kubeadm's default AND downgrade the
  image; --skip-phases leaves CoreDNS 100% untouched while the control plane
  upgrades. CoreDNS is pinned off Keel (keel.sh/policy=never) to stop the drift.
- stacks/k8s-version-upgrade/scripts/upgrade-step.sh: fix the preflight
  quiet-baseline (settle-window) check, which silently no-op'd on the ghcr
  claude-agent-service image's busybox `date` (can't parse ISO8601). Now tries
  GNU then busybox `-D`, and warns+skips on parse failure (no silent fail-open).
- docs: runbook + architecture document the CoreDNS handling.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-17 13:45:05 +00:00
..
agent-task-tracking.md fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
authentication.md feat(authentik): TripIt external self-signup group + forward-auth fence (ADR-0020) 2026-06-15 21:48:04 +00:00
automated-upgrades.md k8s-version-upgrade: unblock 1.34.9 — skip kubeadm CoreDNS addon + busybox-date fix 2026-06-17 13:45:05 +00:00
backup-dr.md monitoring: VzdumpBackup{Stale,NeverRun,Failing} alerts for the new VM-image backup 2026-06-10 09:10:46 +00:00
chrome-service.md tripit: enable live flight-fare scrape via shared chrome-service CDP 2026-06-11 14:23:53 +00:00
ci-cd.md docs: ghcr_pull_token is now a scoped read:packages PAT, not the admin alias 2026-06-15 20:19:17 +00:00
compute.md apply-mbps-caps: compare normalized option sets (true idempotency) + devvm I/O-stall post-mortem [ci skip] 2026-06-11 18:00:08 +00:00
databases.md fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
dns.md pfsense: SNI-routed internal 443 — mail.viktorbarzin.me serves webmail everywhere 2026-06-10 18:41:07 +00:00
homepage.md fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
incident-response.md fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
llama-cpp.md fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
mailserver.md fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
monitoring.md pve-host/dns: register loki.viktorbarzin.lan CNAME, drop the /etc/hosts pin 2026-06-10 22:55:20 +00:00
multi-tenancy.md workstation: per-user playwright browser MCP for all users, reproducible from git 2026-06-16 20:33:47 +00:00
networking.md cloudflared: disable in-place autoupdate (--no-autoupdate) 2026-06-10 21:00:05 +00:00
overview.md fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
secrets.md fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
security.md claude-breakglass: in-cluster warm break-glass UI for the devvm 2026-06-12 21:40:17 +00:00
storage.md docs: sync compute/storage/proxmox-inventory with live state (memory audit) [ci skip] 2026-06-11 17:50:43 +00:00
vpn.md fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
wave1-egress-observation-2026-05-22.md fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00