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vitya 11554d45ac wiki(ingest): vds-kzntsv network-stack mismatch RCA + ifupdown anti-pattern 
Incident 2026-05-28 ~05:45–13:52 MSK на vds-kzntsv. ~2.5ч активного outage
+ ~5.5ч на эфемерной статике до окончательного fix хостером.

Revised RCA: наш netplan+systemd-networkd конфликтовал с provider's expected
ifupdown stack. Их start/ipadd procedure ожидает чистый ifupdown и не может
auto-recover когда networkd «держит» eth0. 8 дней работало потому что
networkd сам тянул DHCP. Когда что-то на стороне Rusonyx разорвало
DHCP-binding — auto-recovery не сработала.

Fix: systemctl mask netplan + systemd-networkd* (на running system без stop —
IP и SSH сохранились), Rusonyx ребутнул VM и положил чистый
/etc/network/interfaces.d/ifcfg-eth0 через свой start/ipadd. Netmask /18,
gw 89.253.192.1, чистый ifupdown.

Wiki:
- NEW concepts/vds-kzntsv-dhcp-outage-2026-05-28 — full RCA + recovery
  runbook (эфемерная статика + permanent-fix via ifupdown) + diagnostic
  dot-graph + revised lessons-learned + anti-pattern
- NEW sources/vds-kzntsv-incident-2026-05-28 — timeline 05:25 backup OK →
  08:43 statics → 13:52 final reset; provider's ifcfg-eth0 content; ticket
  text reference
- UPDATE entities/vds-kzntsv — mask /18, ifupdown stack, kernel cmdline
  net.ifnames=0 объясняет eth0 naming, hypervisor hw80, pass-store путь,
  Known issues §
- UPDATE concepts/rusonyx-vps-onboarding-quirks — quirk #9 переписан про
  /18 layout + canonical ifcfg, quirk #10 NEW про ifupdown vs netplan
  stack choice + bootstrap mask commands
- UPDATE index.md + log.md

Tasks:
- STATUS header: incident RESOLVED summary
- NEXT_SESSION: следующая сессия — cleanup netplan-artifacts (optional),
  registry GC (~20G pending), board-viewer-build unhealthy разбор

Memory (out-of-repo): vds-kzntsv-rusonyx-network-recovery переписан с
revised RCA — canonical bootstrap step «mask netplan/networkd» для всех
Rusonyx Ubuntu VDS.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-28 14:12:14 +03:00

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# Wiki Index
Catalog of all wiki pages. One line per page, organized by type. Updated on every ingest / new page.
## Overview
- [overview.md](overview.md) — project overview
## Entities
- [books-vds](entities/books-vds.md) — Books VDS (89.253.255.133 — host4g.ru, client server hosting books app + shared mongo/minio/elasticsearch)
- [dead-synology-diskstation](entities/dead-synology-diskstation.md) — мёртвая Synology DiskStation (source NAS)
- [kreknin-synology](entities/kreknin-synology.md) — Kreknin Synology (backup target + DDNS)
- [openwrt-router](entities/openwrt-router.md) — OpenWRT Router (192.168.1.1)
- [ruvds-iis-host](entities/ruvds-iis-host.md) — RUVDS IIS Host (Win Server 2025 Core, 80.64.31.36) — CMS catch-all destination
- [snolla-recovery-vm](entities/snolla-recovery-vm.md) — Snolla Recovery VM (VirtualBox, savestate'нута 2026-05-21 после 36h soak)
- [vds-kzntsv](entities/vds-kzntsv.md) — VDS kzntsv (Rusonyx 160 NVMe cloud server)
- [windows-recovery-host](entities/windows-recovery-host.md) — Windows Recovery Host (рабочий PC пользователя)
## Concepts
- [admin-infra-project](concepts/admin-infra-project.md) — design + migration plan для OpeItcLoc03/admin (canonical)
- [vds-kzntsv-ssh-access](concepts/vds-kzntsv-ssh-access.md) — SSH access audit на vds-kzntsv (infra VDS), retained keys + add/revoke processes (was misnamed `books-ssh-access` до 2026-05-25 — content всегда был про vds-kzntsv)
- [compose-bcrypt-escape-trap](concepts/compose-bcrypt-escape-trap.md) — Docker Compose ест `$` в bcrypt hashes
- [db-tls-self-signed-via-traefik-raw-tcp](concepts/db-tls-self-signed-via-traefik-raw-tcp.md) — DB TLS через traefik raw TCP с self-signed certs
- [docker-host-loopback-detect](concepts/docker-host-loopback-detect.md) — Docker host-loopback detection — как доказать что host.docker.internal не петля
- [future-resilient-architecture-goals](concepts/future-resilient-architecture-goals.md) — fault-tolerance roadmap placeholder (расширяется через `[resilience-roadmap-design]`)
- [hyper-backup-structure-and-recovery](concepts/hyper-backup-structure-and-recovery.md) — Hyper Backup — структура репо и стратегия восстановления
- [iis-migration-2026-05-19-postmortem](concepts/iis-migration-2026-05-19-postmortem.md) — post-mortem миграции CMS на нативный IIS, 2026-05-19
- [minio-imgproxy-on-vds](concepts/minio-imgproxy-on-vds.md) — MinIO+imgproxy stack на VDS, миграция с upgrade 2020→2025 + DNS swap pending
- [mssql-container-data-restore](concepts/mssql-container-data-restore.md) — MSSQL контейнер с восстановленными production data — паттерн
- [mssql-on-vds](concepts/mssql-on-vds.md) — MSSQL Express 2022 Linux на VDS — миграция + login orphan fix + traefik TCP gotchas
- [ocis-on-vds-deploy-recipe](concepts/ocis-on-vds-deploy-recipe.md) — oCIS на VDS — deploy recipe + non-obvious gotchas (UID 1001 vs 1000, basic auth, LibreGraph user-create)
- [portainer-2.21-admin-password-regression](concepts/portainer-2.21-admin-password-regression.md) — Portainer 2.21 `--admin-password` regression + min 12-char policy
- [portainer-stack-management-books-vds](concepts/portainer-stack-management-books-vds.md) — Portainer-managed stacks на books VDS — pattern application + migration log 2026-05-25
- [portainer-stack-management-vds](concepts/portainer-stack-management-vds.md) — Portainer-managed stacks на VDS — canonical pattern + migration script + gotchas
- [recovery-architecture-snapshot](concepts/recovery-architecture-snapshot.md) — текущая recovery architecture (2026-05-19/21, attempt 2)
- [registry-gc-mount-and-modify-flag](concepts/registry-gc-mount-and-modify-flag.md) — Docker Registry GC mount layout + `-m` flag
- [rusonyx-vps-onboarding-quirks](concepts/rusonyx-vps-onboarding-quirks.md) — Rusonyx VPS onboarding quirks (Astra Облако / myvm.rusonyx.ru)
- [traefik-acme-json-to-iis-cert-import](concepts/traefik-acme-json-to-iis-cert-import.md) — Экспорт LE certs из traefik acme.json в IIS (PFX + SNI bindings)
- [traefik-file-watch-wsl2-broken](concepts/traefik-file-watch-wsl2-broken.md) — Traefik file-watch broken под Docker Desktop Windows (WSL2 9p mount)
- [traefik-on-windows-docker-desktop](concepts/traefik-on-windows-docker-desktop.md) — Traefik на Windows Docker Desktop — нюансы
- [traefik-tcp-passthrough-vs-starttls](concepts/traefik-tcp-passthrough-vs-starttls.md) — Traefik TCP passthrough vs STARTTLS-protocols
- [vbox-windows-stability-tuning](concepts/vbox-windows-stability-tuning.md) — VirtualBox + Windows-гость — нюансы стабильности cross-hypervisor миграции
- [vds-kzntsv-dhcp-outage-2026-05-28](concepts/vds-kzntsv-dhcp-outage-2026-05-28.md) — DHCP outage 2026-05-28 на vds-kzntsv — диагностика + recovery runbook (link UP но без IPv4 → статика + тикет хостеру)
- [verdaccio-prune-semantics](concepts/verdaccio-prune-semantics.md) — Verdaccio prune semantics — proxied vs locally-published
- [wd40efax-smr-cascade](concepts/wd40efax-smr-cascade.md) — WD40EFAX SMR Cascade — root cause NAS failure 2026-05-18
- [windows-server-2025-core-bootstrap](concepts/windows-server-2025-core-bootstrap.md) — Win Server 2025 Core (RUVDS) — bootstrap для IIS-хоста: default-blockers + transfer-методов матрица
## Packages
<!-- (none yet) -->
## Sources
- [iis-host-migration-2026-05-19](sources/iis-host-migration-2026-05-19.md) — IIS Host Migration Session 2026-05-19 chronology
- [iis-migration-to-ruvds-2026-05-23](sources/iis-migration-to-ruvds-2026-05-23.md) — IIS migration to RUVDS — session 2026-05-23/24 (SSH/scp pivot, 25 SNI bindings, partial DNS cutover)
- [nas-recovery-session-2026-05-18](sources/nas-recovery-session-2026-05-18.md) — NAS Recovery Session 2026-05-18/19 chronology
- [books-vds-backup-daily-kreknin-2026-05-25](sources/books-vds-backup-daily-kreknin-2026-05-25.md) — books VDS daily backup → kreknin pipeline standup 2026-05-25 (ES file-snapshot repo + DB dumps + curl SMTP)
- [ruvds-backup-daily-kreknin-2026-05-24](sources/ruvds-backup-daily-kreknin-2026-05-24.md) — RUVDS daily backup → kreknin pipeline standup 2026-05-24 (rclone+SFTP, SYSTEM task)
- [vds-kzntsv-bootstrap-2026-05-20](sources/vds-kzntsv-bootstrap-2026-05-20.md) — VDS bootstrap session 2026-05-20 chronology
- [vds-kzntsv-incident-2026-05-28](sources/vds-kzntsv-incident-2026-05-28.md) — DHCP outage incident session 2026-05-28 — chronology + ticket text
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