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Implements tmp/tidaldb-fleet-hardening (20 planned tasks + 2 found by measurement). Ring 0 — restore verification. .woodpecker.yaml step pods ran at the namespace default of 1500m/2Gi, which OOMKilled a prior pipeline and starved the release gate past its budget. Both push-path steps now declare backend_options.kubernetes.resources as two YAML anchors declared once on their first consuming step. The values are CALIBRATED against measured free node capacity, not against the LimitRange max: `requests: cpu 2` (this roadmap's original figure) fits on NO node and would sit Pending forever, because `ci-build-bounds` grants permission and the nodes supply capacity, and those are not the same thing. The `nightly` cron described in this file for 216 days was never created, so tier-3 chaos, the fault classes, mTLS and the PITR test produced exactly zero signal while reading like standing coverage. nightly-chaos and nightly-security-ops now alias the anchors and have budgets matching the gate (their 120/90 were TIGHTER on the same runner, so they would have failed nightly for a budget reason, not a correctness one). nightly-soak is REMOVED, not scheduled: it drives 1000 rps for 600s gating on p99 <= 250ms, and the best node has 1700m free CPU, so it would fail on starvation rather than regression — manufacturing a nightly false alarm. Its commands move verbatim to docs/runbooks/nightly-soak.md. Ring 1 — four fabrications removed from the wire. - scatter_merge sorted and truncated without re-stamping rank, so /feed and /search returned 1,1,2 under full placement. Reuses merge_cross_shard's existing stamp; asserted on BOTH the multi-group merge path and the single-group [only] fast path that bypasses it. - aggregate_region_row's None arm invented `applied_events: 0` plus a deficit derived from it. applied_events/lag_events are now Option<u64>, null on the wire. leader_last_seq was also unwrap_or(0), so a node that could not reach the LEADER computed 0 - applied = 0 for every region and reported a converged cluster it had never measured — a fabrication pointing the dangerous way. - tidalctl inferred NO REPORT from `applied == 0 && lag > 0`. That heuristic was actively hiding the PVC-wipe shape: a measured zero with a real deficit rendered as "no report" instead of BEHIND. Now read off the wire; converged exits 0, partitioned still exits nonzero. - /sharded/* answered 201/204 for single-copy writes with nothing anywhere saying so. Now requires `x-tidal-ack: local`, rejecting with 400 via the existing invalid_input path. Six call sites migrated, not the two this roadmap predicted — including docs/runbooks/cluster.md §16.3, which told operators to run a quorum-write probe via POST /sharded/items. That probe cannot verify quorum: the surface applies locally with no WAL append. It was used as the safety check between every step of a staged deploy earlier today. Ring 2 — observability. JSON_LOGS was already implemented and the deployment simply never asked for it; the StatefulSet now sets it, plus TIDAL_SERVICE_NAME=tidaldb because enabling it silently renames the VictoriaLogs `service` stream field and would have blinded every query keyed on it. Adds tidaldb_usearch_replicated_vectors_total, incremented on BOTH the origin (wal_blob_first -> Ok(Some)) and the follower apply path — counting only the origin would mean each vector lands on exactly one node, replicas never agree, and the alert built on it pages forever. Found by measurement, not planned: the 401 path discarded every fact about every rejection. Traefik has served 101,858 rejected requests to the public ingress — 87.6% of all its traffic — with no record of who or why anywhere. unauthorized_response now emits reason (missing_token vs invalid_token, the distinction that separates a scanner from a rotation that missed a consumer) and the forwarded client. The token is never logged. Also: scripts/restore-fleet.sh --cluster started the soak monitor while deliberately leaving its gate suspended, orphaning a watcher that has reported "0/30 green nights" for 13 days. The pair now moves together. Doc-guard's three-warning backlog is cleared with real backfill for M4/M6/M12. Verified: fmt clean; clippy 5 crates 0 new warnings (74 vs 74 baseline, counted in a detached worktree at HEAD); lib 2110 passed; cluster_sharding 5; cluster_runbook 10; tidalctl 38; doc-guard 0 warnings. Playwright 32/34 with the two remaining failures asserting the rank fix against the not-yet-rolled image — they are the post-deploy proof.
35 lines
1.8 KiB
Markdown
35 lines
1.8 KiB
Markdown
# m12p4 — Sharded ingestion (✅ COMPLETE 2026-06-14)
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Landed in `31ee612`. Evidence:
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[docs/profiling/m12p4-t5-sharded-throughput.md](../../profiling/m12p4-t5-sharded-throughput.md).
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Milestone index: [README.md](README.md). Backfilled record.
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## What shipped
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1. **Scatter-gather pool with cross-shard unified reads.** Writes hash-route
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across a 3-group `shards:` topology; reads unify across groups (L4). The
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"replicated XOR sharded" split — inherited from m11p6's shard-groups work — is
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exercised end-to-end on the read path here.
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2. **A real run, not a simulation.** A 3-shard-group × RF=3 cluster on `kind`
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(single node, 24 vCPU / 50 GB) under full mTLS with cert-manager-issued certs,
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driven by **two** in-cluster `tidal-stress` generator pods: real binaries, real
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WAL and quorum, real gRPC replication, real inter-node mTLS HTTP.
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3. **An HTTP/2 forwarding bug fixed.** A synthesized JSON body on a 204 relay
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triggered an h2 `RST_STREAM`; a 204 forward must carry no body.
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## What the run actually proved — and did not
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With data rather than a hardware caveat: **at fixed per-pod CPU, full-placement
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sharding scales failover, not write throughput.** The headline gate
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(≥2.5× scaling AND ≥5,000 quorum writes/s) therefore remains **Ref-A/k3s-pending**,
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and the ≥2.5× target properly belongs to a ≥5-node **partitioned-placement**
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topology (Ref-B). Adding nodes to full-placement RF3 does not scale writes; the
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gate was mis-assigned, and m12p4 is what surfaced that.
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## Follow-on repair
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Deploying this layer to the real 3-shard k3s cluster exposed five 3-shard
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catch-up / read / reseed bugs, each root-caused and fixed in `m12-rc8` (with
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adversarial failover-safety review before implementation). Record:
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[docs/profiling/m12-cluster-deploy-findings.md](../../profiling/m12-cluster-deploy-findings.md).
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