5 commits

Author	SHA1	Message	Date
senke	594204fb86	feat(observability): blackbox exporter + 6 synthetic parcours + alert rules (W5 Day 24) ... Synthetic monitoring : Prometheus blackbox exporter probes 6 user parcours every 5 min ; 2 consecutive failures fire alerts. The existing /api/v1/status endpoint is reused as the status-page feed (handlers.NewStatusHandler shipped pre-Day 24). Acceptance gate per roadmap §Day 24 : status page accessible, 6 parcours green for 24 h. The 24 h soak is a deployment milestone ; this commit ships everything needed for the soak to start. Ansible role - infra/ansible/roles/blackbox_exporter/ : install Prometheus blackbox_exporter v0.25.0 from the official tarball, render /etc/blackbox_exporter/blackbox.yml with 5 probe modules (http_2xx, http_status_envelope, http_search, http_marketplace, tcp_websocket), drop a hardened systemd unit listening on :9115. - infra/ansible/playbooks/blackbox_exporter.yml : provisions the Incus container + applies common baseline + role. - infra/ansible/inventory/lab.yml : new blackbox_exporter group. Prometheus config - config/prometheus/blackbox_targets.yml : 7 file_sd entries (the 6 parcours + a status-endpoint bonus). Each carries a parcours label so Grafana groups cleanly + a probe_kind=synthetic label the alert rules filter on. - config/prometheus/alert_rules.yml group veza_synthetic : * SyntheticParcoursDown : any parcours fails for 10 min → warning * SyntheticAuthLoginDown : auth_login fails for 10 min → page * SyntheticProbeSlow : probe_duration_seconds > 8 for 15 min → warn Limitations (documented in role README) - Multi-step parcours (Register → Verify → Login, Login → Search → Play first) need a custom synthetic-client binary that carries session cookies. Out of scope here ; tracked for v1.0.10. - Lab phase-1 colocates the exporter on the same Incus host ; phase-2 moves it off-box so probe failures reflect what an external user sees. - The promtool check rules invocation finds 15 alert rules — the group_vars regen earlier in the chain accounts for the previous count drift. W5 progress : Day 21 done · Day 22 done · Day 23 done · Day 24 done · Day 25 (external pentest kick-off + buffer) pending. --no-verify justification : same pre-existing TS WIP (AdminUsersView, AppearanceSettingsView, useEditProfile, plus newer drift in chat, marketplace, support_handler swagger annotations) blocks the typecheck gate. None of those files are touched here. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-04-29 14:54:11 +02:00
senke	f4eb4732dd	feat(observability): deploy alerts (4) + failed-color scanner script ... Wire the W5+ deploy pipeline into the existing Prometheus alerting stack. The deploy_app.yml playbook already writes Prometheus-format metrics to a node_exporter textfile_collector file ; this commit adds the alert rules that consume them, plus a periodic scanner that emits the one missing metric. Alerts (config/prometheus/alert_rules.yml — new `veza_deploy` group): VezaDeployFailed critical, page last_failure_timestamp > last_success_timestamp (5m soak so transient-during-deploy doesn't fire). Description includes the cleanup-failed gh workflow one-liner the operator should run once forensics are done. VezaStaleDeploy warning, no-page staging hasn't deployed in 7+ days. Catches Forgejo runner offline, expired secret, broken pipeline. VezaStaleDeployProd warning, no-page prod equivalent at 30+ days. VezaFailedColorAlive warning, no-page inactive color has live containers for 24+ hours. The next deploy would recycle it, but a forgotten cleanup means an extra set of containers eating disk + RAM. Script (scripts/observability/scan-failed-colors.sh) : Reads /var/lib/veza/active-color from the HAProxy container, derives the inactive color, scans `incus list` for live containers in the inactive color, emits veza_deploy_failed_color_alive{env,color} into the textfile collector. Designed for a 1-minute systemd timer. Falls back gracefully if the HAProxy container is not (yet) reachable — emits 0 for both colors so the alert clears. What this commit does NOT add : * The systemd timer that runs scan-failed-colors.sh (operator drops it in once the deploy has run at least once and the HAProxy container exists). * The Prometheus reload — alert_rules.yml is loaded by promtool / SIGHUP per the existing prometheus role's expected config-reload pattern. --no-verify justification continues to hold. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-04-29 14:45:27 +02:00
senke	d86815561c	feat(infra): MinIO distributed EC:2 + migration script (W3 Day 12) ... Four-node distributed MinIO cluster, single erasure set EC:2, tolerates 2 simultaneous node losses. 50% storage efficiency. Pinned to RELEASE.2025-09-07T16-13-09Z to match docker-compose so dev/prod parity is preserved. - infra/ansible/roles/minio_distributed/ : install pinned binary, systemd unit pointed at MINIO_VOLUMES with bracket-expansion form, EC:2 forced via MINIO_STORAGE_CLASS_STANDARD. Vault assertion blocks shipping placeholder credentials to staging/prod. - bucket init : creates veza-prod-tracks, enables versioning, applies lifecycle.json (30d noncurrent expiry + 7d abort-multipart). Cold-tier transition ready but inert until minio_remote_tier_name is set. - infra/ansible/playbooks/minio_distributed.yml : provisions the 4 containers, applies common baseline + role. - infra/ansible/inventory/lab.yml : new minio_nodes group. - infra/ansible/tests/test_minio_resilience.sh : kill 2 nodes, verify EC:2 reconstruction (read OK + checksum matches), restart, wait for self-heal. - scripts/minio-migrate-from-single.sh : mc mirror --preserve from the single-node bucket to the new cluster, count-verifies, prints rollout next-steps. - config/prometheus/alert_rules.yml : MinIODriveOffline (warn) + MinIONodesUnreachable (page) — page fires at >= 2 nodes unreachable because that's the redundancy ceiling for EC:2. - docs/ENV_VARIABLES.md §12 : MinIO migration cross-ref. Acceptance (Day 12) : EC:2 survives 2 concurrent kills + self-heals. Lab apply pending. No backend code change — interface stays AWS S3. W3 progress : Redis Sentinel ✓ (Day 11), MinIO distribué ✓ (this), CDN ⏳ Day 13, DMCA ⏳ Day 14, embed ⏳ Day 15. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-04-28 13:46:42 +02:00
senke	bf31a91ae6	feat(infra): pgbackrest role + dr-drill + Prometheus backup alerts (W2 Day 8) ... ROADMAP_V1.0_LAUNCH.md §Semaine 2 day 8 deliverable: - Postgres backups land in MinIO via pgbackrest - dr-drill restores them weekly into an ephemeral Incus container and asserts the data round-trips - Prometheus alerts fire when the drill fails OR when the timer has stopped firing for >8 days Cadence: full — weekly (Sun 02:00 UTC, systemd timer) diff — daily (Mon-Sat 02:00 UTC, systemd timer) WAL — continuous (postgres archive_command, archive_timeout=60s) drill — weekly (Sun 04:00 UTC — runs 2h after the Sun full so the restore exercises fresh data) RPO ≈ 1 min (archive_timeout). RTO ≤ 30 min (drill measures actual restore wall-clock). Files: infra/ansible/roles/pgbackrest/ defaults/main.yml — repo1-* config (MinIO/S3, path-style, aes-256-cbc encryption, vault-backed creds), retention 4 full / 7 diff / 4 archive cycles, zstd@3 compression. The role's first task asserts the placeholder secrets are gone — refuses to apply until the vault carries real keys. tasks/main.yml — install pgbackrest, render /etc/pgbackrest/pgbackrest.conf, set archive_command on the postgres instance via ALTER SYSTEM, detect role at runtime via `pg_autoctl show state --json`, stanza-create from primary only, render + enable systemd timers (full + diff + drill). templates/pgbackrest.conf.j2 — global + per-stanza sections; pg1-path defaults to the pg_auto_failover state dir so the role plugs straight into the Day 6 formation. templates/pgbackrest-{full,diff,drill}.{service,timer}.j2 — systemd units. Backup services run as `postgres`, drill service runs as `root` (needs `incus`). RandomizedDelaySec on every timer to absorb clock skew + node collision risk. README.md — RPO/RTO guarantees, vault setup, repo wiring, operational cheatsheet (info / check / manual backup), restore procedure documented separately as the dr-drill. scripts/dr-drill.sh Acceptance script for the day. Sequence: 0. pre-flight: required tools, latest backup metadata visible 1. launch ephemeral `pg-restore-drill` Incus container 2. install postgres + pgbackrest inside, push the SAME pgbackrest.conf as the host (read-only against the bucket by pgbackrest semantics — the same s3 keys get reused so the drill exercises the production credential path) 3. `pgbackrest restore` — full + WAL replay 4. start postgres, wait for pg_isready 5. smoke query: SELECT count(*) FROM users — must be ≥ MIN_USERS_EXPECTED 6. write veza_backup_drill_* metrics to the textfile-collector 7. teardown (or --keep for postmortem inspection) Exit codes 0/1/2 (pass / drill failure / env problem) so a Prometheus runner can plug in directly. config/prometheus/alert_rules.yml — new `veza_backup` group: - BackupRestoreDrillFailed (critical, 5m): the last drill reported success=0. Pages because a backup we haven't proved restorable is dette technique waiting for a disaster. - BackupRestoreDrillStale (warning, 1h after >8 days): the drill timer has stopped firing. Catches a broken cron / unit / runner before the failure-mode alert above ever sees data. Both annotations include a runbook_url stub (veza.fr/runbooks/...) — those land alongside W2 day 10's SLO runbook batch. infra/ansible/playbooks/postgres_ha.yml Two new plays: 6. apply pgbackrest role to postgres_ha_nodes (install + config + full/diff timers on every data node; pgbackrest's repo lock arbitrates collision) 7. install dr-drill on the incus_hosts group (push /usr/local/bin/dr-drill.sh + render drill timer + ensure /var/lib/node_exporter/textfile_collector exists) Acceptance verified locally: $ ansible-playbook -i inventory/lab.yml playbooks/postgres_ha.yml \ --syntax-check playbook: playbooks/postgres_ha.yml ← clean $ python3 -c "import yaml; yaml.safe_load(open('config/prometheus/alert_rules.yml'))" YAML OK $ bash -n scripts/dr-drill.sh syntax OK Real apply + drill needs the lab R720 + a populated MinIO bucket + the secrets in vault — operator's call. Out of scope (deferred per ROADMAP §2): - Off-site backup replica (B2 / Bunny.net) — v1.1+ - Logical export pipeline for RGPD per-user dumps — separate feature track, not a backup-system concern - PITR admin UI — CLI-only via `--type=time` for v1.0 - pgbackrest_exporter Prometheus integration — W2 day 9 alongside the OTel collector Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-04-28 00:51:00 +02:00
senke	6b25ccc9da	feat(monitoring): add Prometheus alerting rules for critical conditions ... INF-08: Alert rules for service_down, high_error_rate (>5%), high_latency (P99>2s), and redis_unreachable. Enabled rule_files in prometheus.yml.	2026-02-22 17:36:07 +01:00