Claude Fable 5
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audit.retentionDays (instance setting, default 365) bounds the audit_log: the daily audit-retention job deletes entries past the period and records the deletion itself (audit.pruned with count, cutoff and period) so a gap in the trail is always explainable. Lives in its own AuditRetentionService because the settings service audits its writes - folding retention into AuditService would close a constructor cycle. The read-access trail (#222-#225) is deliberately not covered; it gets its own period. security.md gains the Logging section the schema has cited for a while; the maintenance-job fence moves 6 -> 7 (the deliberate new row). Refs #196 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0168Ph5uBmHm8X28CSVpbpnJ
156 lines
9.4 KiB
Markdown
156 lines
9.4 KiB
Markdown
# Operations concept
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Pragmatic monitoring (kickoff decision): health checks, external uptime
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monitoring, structured logs, backup alerting — no dedicated metrics stack.
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## Health & monitoring
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- **Health endpoints**: `api` exposes `/healthz` (liveness: process up) and
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`/readyz` (readiness: DB reachable + migrations applied = hard failures
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→ 503; converter/renderer reachability and backup freshness < 26 h are
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warning-level → overall `status: degraded`, still HTTP 200). `collab`
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exposes `/healthz` (process + DB). `web` serves a static `/healthz`.
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- **Docker healthchecks** use the liveness endpoints only — never `readyz` —
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so a degraded instance is not restart-looped (`restart: unless-stopped`
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restarts on process exit, an `unhealthy` mark just shows in
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`docker compose ps`).
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- **External uptime monitoring**: the operator's existing Uptime-Kuma runs
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the monitor set defined in `deploy/monitoring.md` (web healthz, api
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readyz for down, a keyword monitor on the readyz body for degraded, and
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a collab WebSocket check), with notification on failure for Prod.
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Test/Int get reduced monitors (no paging).
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- **Backup alerting**: the backup sidecar writes
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`backups/status.json` after every run; `readyz` reads it (issue #85) and
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degrades when the last successful backup is older than 26 h, which
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surfaces through Uptime-Kuma without extra tooling. Additionally the
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sidecar sends a failure e-mail via the instance SMTP.
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## Logging
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- All services log **structured JSON to stdout** (pino); Docker's json-file
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driver with rotation (`max-size: 10m`, `max-file: 5`).
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- Log content rules: request logs with method/route/status/duration/user id
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(no request bodies), auth events (login success/failure, permission
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denials), admin actions (grants, plugin installs, quota changes) as an
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**audit trail**, collab session open/close. Never log passwords, tokens,
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session ids, or page content.
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- **Persistent audit trail** (issue #86): the auth events and admin actions
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additionally land as rows in `audit_log` via `AuditService` — queryable in
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the Site-Admin System panel (filter by actor/action/time, paginated).
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Content activity (pages, files, exports, labels) stays log-only by design.
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- Reading logs = `docker compose logs` / `docker logs` on the host; no
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central log stack at this scale (revisit if a second Prod host appears).
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## Backup & restore (operational view of ADR 0015)
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- Nightly at 03:00 stage-local time (sidecar `backup`, issue #83; env
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`BACKUP_TIME`/`TZ`): `pg_dump -Fc` → uploads/plugins volume archive (one
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tar, same backup id `YYYYMMDD-HHMMSS`) → optional Nextcloud upload
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(issue #103, see below) → prune (`BACKUP_RETENTION_DAYS`, 30 default /
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7 Test+Int; a Site-Admin setting overrides the env; the newest complete
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set always survives) → `status.json` on the `backups` volume → on
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failure a mail directly via the instance SMTP to `BACKUP_MAIL_TO`.
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- **Private mirror** (issue #84): with `BACKUP_MIRROR_TARGET` +
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`BACKUP_MIRROR_SSH_KEY` set (Prod: BASEL over WireGuard), every
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successful run rsyncs the set files after the prune (`--delete` aligns
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the remote retention); outcome in `status.json → mirror`, failures mail
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like run failures. Setup: `deploy/backup-basel.md`.
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- **Off-host copies** (issue #103): with a Nextcloud target configured in
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the admin UI (WebDAV base URL + username + folder in instance settings,
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app password in the secret store), each successful set is bundled into
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ONE `dorfteich-backup-<id>.tar.gz` (dump + files archive + manifest) and
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uploaded per schedule (daily/weekly/manual); remote prune mirrors the
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local guarantee. The api and the sidecar talk over pg NOTIFY/LISTEN
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(`backup_command`); upload failures mail like run failures, staleness
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shows up as the `backup_remote` readyz check.
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- **Target policy** (issue #192, ADR 0026): `BACKUP_ALLOWED_TARGETS` is a
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deploy-level, comma-separated allowlist of permissible destination
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hosts, enforced by the api (settings writes, connection test, admin
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view) and by the sidecar at the point of egress (WebDAV upload and
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rsync mirror alike). **Empty — the default — disables every remote
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target: backups stay local only, which is the VS-NfD reference
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configuration.** Existing deployments with a remote target must list
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its host, or uploads and mirror stop (called out in the release notes).
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The admin UI shows "unavailable by policy" as distinct from
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"not configured". Deliberately not a runtime setting: a compromised
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Site-Admin account cannot widen it.
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- **On-demand run**: `docker compose run --rm -e BACKUP_RUN_ONCE=1 backup`
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(exit code = outcome); list sets with `docker compose exec backup ls /backups`.
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- **Restore runbook** (also the Prod-relocation procedure) — automated by
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`deploy/backup/restore.sh <backup-id>`, run from the stage directory:
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1. stop the app services (`web`, `api`, `collab`; the db stays up),
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2. restore DB: `pg_restore --clean --if-exists` into the `db` container,
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3. restore volume: unpack the matching uploads/plugins archive,
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4. `docker compose up -d`, verify `/readyz`, spot-check a page + a file.
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- **Drills** (issue #87): monthly automated restore of the latest backup
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set into a scratch environment via `.gitea/workflows/drill.yml` →
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`deploy/backup/drill.sh` (sanity checks + report on the pinned "Restore
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drills" issue); manual procedure and relocation notes in
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`docs/operations/restore-runbook.md`. Quarterly manual full-runbook
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drill on Test.
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- **Admin UI** (issue #103): Site Admin triggers on-demand backups
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("Back up now") and restores a local or Nextcloud set in-app — a
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type-to-confirm prompt, then the sidecar orchestrates: maintenance mode
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(global 503 with an exempt status endpoint), collab sessions closed via
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the `backup_maintenance` NOTIFY channel, connections terminated,
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`pg_restore` + volume extract, api restart. `restore.sh` remains the
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disaster fallback when the app itself is gone.
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## Maintenance jobs (in-app scheduler, `jobs` table)
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| Job | Cadence | Purpose |
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| --------------------- | ----------------------- | --------------------------------------------------- |
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| trash purge | daily | delete pages/ponds past trash retention (ADR 0013) |
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| version thinning | daily | auto-version retention policy (ADR 0013) |
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| update-log compaction | hourly, idle pages only | bound Yjs log growth |
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| quota reconciliation | nightly | recompute `pond_usage`, report drift |
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| orphan file sweep | nightly | volume ↔ DB consistency (ADR 0011) |
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| audit retention | daily | prune `audit_log` past `audit.retentionDays` (#196) |
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| mail outbox retry | every minute | e-mail delivery with backoff |
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Job outcomes are visible in the Site Admin UI (last run, status) — that
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panel is the operator's single glance for instance health.
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Orphan file sweep (issue #194): nightly, two directions. Attachments
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still unclaimed (`pageId` null) after a 24 h grace period — claimed by
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no collab persist, page upload, or import — are reclaimed (row, file,
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quota); the grace period protects the paste-then-insert window. Files on
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the uploads volume without a database row (drift after a crashed upload)
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are removed once older than the grace period. Claimed attachments whose
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page content no longer embeds them are deliberately NOT auto-deleted:
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the page attachments panel lists them as user-managed objects (insert is
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optional there), so cleanup of those is a human decision in the panel or
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the pond file manager. Attachment deletion is hard everywhere — the
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unused `deleted_at` column was removed with #194.
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Pond purge (issue #193): a trashed pond past the trash retention is
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removed with everything it holds — pages (cascading versions, comments,
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content cache incl. the search vector, update log, mentions, label
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assignments, favorites, outgoing links, open collab sessions),
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attachments (rows and files on disk), labels, grants, usage counters,
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watches, pond quota overrides, pond-plugin opt-ins, and conversion jobs.
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A Site Admin can purge a trashed pond immediately
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(`DELETE /ponds/:id/purge`); both paths record a `pond.purged` audit
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event. Known residues by design: `page_links.target_slug` in OTHER
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ponds' pages (#235) and backups within their retention.
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## Update strategy
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- **Own stages**: pipeline-driven (see `deployment.md`); Prod only via
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approved release tags.
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- **Self-hosters**: semver releases; `docker compose pull && up -d`;
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migrations auto-apply; release notes flag manual steps and `migration`
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label. Supported downgrade window: one minor release.
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- **Base image / dependency hygiene**: monthly dependency-update story
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(renovate-style batch PR); security advisories for pinned images tracked
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in the release checklist.
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## Capacity & limits (initial values, instance-tunable)
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| Limit | Default |
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| ------------------------------- | ------------------------------------------------ |
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| max page document size | 5 MiB Yjs state |
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| max upload size | 25 MiB (quota ladder, ADR 0011) |
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| collab connections per instance | 500 concurrent |
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| rate limits | login 10/min/IP, signup 5/h/IP, API 100/min/user |
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