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Fix migration workflow: upload as artifact instead of scp to practice EC2

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BaoVu2k4
2026-08-13 11:14:25 +07:00
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# 25 — Troubleshooting
Every row is derived from a specific code path, comment, or observed failure in
this repository. Nothing here is speculative.
## Startup
| Symptom | Likely cause | How to verify | Fix |
|---|---|---|---|
| `ai-service` exits immediately on start, `ManifestMismatch` in the log | `EMBEDDING_DIMENSIONS`/model does not match `duocthu_v1__manifest`, or the sidecar collection is missing entirely | `docker logs docker-ai-service-1`; then `GET /collections/duocthu_v1__manifest/points/00000000-0000-5000-8000-000000000001` on Qdrant | Point `QDRANT_COLLECTION` at the collection the manifest was written for, or restore/reload the corpus. **Do not** bypass the check |
| `ResponseHandlingException … connection refused` at startup or during pytest collection | `EMBEDDING_PROVIDER=cohere-v4` with no reachable Qdrant. `main.py` builds the runtime at import time | Try to reach `QDRANT_URL` | Start Qdrant, or set `EMBEDDING_PROVIDER=disabled` |
| `ValueError: No production query embedder is configured` | `EMBEDDING_PROVIDER` is neither `cohere-v4` nor `disabled` | `bootstrap.py::build_runtime` | Use one of the two supported values |
| `ValueError: Unknown ANSWER_PROVIDER` | Typo in `ANSWER_PROVIDER` | `bootstrap.py::_build_generator` | `disabled` \| `stub` \| `bedrock-claude` \| `bedrock-converse` |
| Startup fails reading the entities file | `ENTITIES_PATH` default assumes a full monorepo checkout; the container flattens `apps/ai-service` into `/app` | Check `ENTITIES_PATH` in `.env.prod` | Set `ENTITIES_PATH=./ingestion_data/drug_entities.json` (the Dockerfile bakes it there) |
## Request-time
| Symptom | Likely cause | How to verify | Fix |
|---|---|---|---|
| `503 RAG backend is not configured` | `app.state.answer_service is None` — i.e. `EMBEDDING_PROVIDER=disabled` | `GET /ready` returns 200 in this mode, so check the env, not the probe | Configure a real embedding provider |
| Every question returns an abstain | One dominant failure upstream | `duocthu_abstention_total{reason}` and `duocthu_generation_rejected_total{reason}` | Follow the reason code in the table below |
| `provider_unavailable` | Bedrock unreachable, throttled, or IAM denied | `duocthu_provider_failure_total{provider,operation,reason}`; ai-service logs | Check the instance role, model access, and region |
| `request_budget_exhausted` | 40 s wall clock or 8 calls used. Most often the completeness-repair path (observed live at 40.3 s on an Isosorbid dinitrat dosage turn) | Tempo span durations per stage | Raise `MAX_WALL_CLOCK_MS`, or investigate why repair triggered |
| `unsupported_claim` | The entailment judge did not confirm a claim against its cited block | Trace row + Tempo `rag.stage.entailment` | Usually genuine; if it recurs on correct answers, inspect the evidence labelling |
| `incomplete_answer` | The judge found a *quote-validated* omission and the repair still failed | `answer.py` logs `answer completeness repair:` at WARNING with the missing items | Inspect the evidence; the repair doubles model calls, so it may also be a budget issue |
| `ungrounded_number` | A figure in the answer is not verbatim in the block it cites | Grounding is deterministic — reproduce with the same evidence | Working as designed; the answer was correctly discarded |
| `evidence_insufficient` | The model self-reported insufficiency twice | — | Often a genuinely unanswerable question for the retrieved section |
| `drug_not_in_formulary` | The name is not in the 684-drug catalog, or fuzzy matching did not put it in the candidate set | `GET /v1/rag/suggest?q=<prefix>` | Correct behaviour for a real absence; the corpus is Part 2 monographs only |
| `out_of_scope` | `looks_non_human` matched, or the turn is about Part 1/Part 3 content | `rag/policy.py` phrase list | Correct behaviour |
| The bot re-asks the same clarifying question | Understanding did not merge a known field | Look for `clarify_loop_exhausted` after four turns | Restate the whole question in one message or start a new session; the circuit breaker says so |
| `clarify_loop_exhausted` | Four consecutive clarifies | `duocthu_clarify_asked_total{reason}` | As above |
| An abstain reads as "no data in the formulary" but the logs show an outage | A `reason` code with no entry in `REFUSALS` fell through to `GENERIC_REFUSAL` | Compare the code against the map in `apps/web/app/api/chat/route.ts` | Add the missing entry — the file's comment calls this out explicitly |
| Answers come back verbatim and unpolished | No generator configured — retrieval-only mode | `duocthu_answer_extractive_total` is incrementing | Set a real `ANSWER_PROVIDER` |
| Section answer starts mid-sentence / wrong population first | `part_index` ordering lost | `adapters/qdrant.py::find_by_section` re-sorts; check the payload has `part_index` | Reload the corpus if payloads are missing the field |
## Frontend
| Symptom | Likely cause | How to verify | Fix |
|---|---|---|---|
| "Hệ thống xử lý quá 65 giây nên đã dừng yêu cầu này" | Client abort at `REQUEST_TIMEOUT_MS` | The backend may still have answered — check `rag_retrieval_trace` for the turn | Retry; if frequent, look at Bedrock latency |
| `429 rate_limited` | `middleware.ts`: 12/min or 120/hour per IP on `/api/chat` | `Retry-After`, `X-RateLimit-*` headers | Wait, or adjust `RULES` — note the limiter is per process |
| "Dịch vụ AI Service đang khởi động hoặc gặp sự cố tạm thời" | Upstream returned non-OK — `reason: upstream_error` | `docker logs docker-ai-service-1` | Fix the upstream |
| "Không thể kết nối đến AI Service (…)" | `fetch` threw — `reason: upstream_unreachable` | Check `AI_SERVICE_URL` / `API_GATEWAY_URL` | Correct the URL or start the service |
| Each starter-question click sends two requests | React 18 Strict Mode replay in dev | Only in `pnpm dev` | `initialQuerySentRef` already guards it; do not remove |
| `/api/pdf` 404 with a Vietnamese message | The PDF is not at `../../ingestion/data/raw/…` relative to `process.cwd()` | `ls` inside the `web` container | The path is resolved from `apps/web`, so the image must contain the repo layout |
## Ingestion
| Symptom | Likely cause | How to verify | Fix |
|---|---|---|---|
| `chunk_all requires a verified printed_page_map` | `--pdf` not passed to `chunk` | The exception text | Pass the source PDF; the folio map is built from it |
| `cannot cite …: printed folio missing for physical pages [...]` | `page_map` could not resolve a folio (two same-size candidates) | Render the page and look at the header band | Investigate that page; the code deliberately refuses to guess |
| `cannot map … chunk source text uniquely to its section` | `source_text` occurs zero or multiple times in the section | Gate `chunk_source_text_not_unique` | A packer or normalisation change; do not relax the check |
| `DuplicateDrugIdError` | Two monographs slugify to the same `drug_id` | The exception names it | Disambiguate in `segment/` |
| `CorpusMismatch: refusing to load into '…'` | The collection was built from a different corpus/model/dimension | Compare `corpus_sha256` and `model_id` | Load into a **new** collection name |
| `collection '…' already holds N points but has no manifest` | The collection was written by something that did not record what it wrote | — | Recreate it via the loader |
| Loader exits 1 after upserting | `collection_count != points_upserted` | The printed report | Investigate before querying — the corpus is not trustworthy |
| `NotImplementedError: 'visual-diff' is planned…` | Declared but unbuilt CLI subcommand | `cli.py::_cmd_not_implemented` | Not a bug |
| `UnicodeEncodeError` printing Vietnamese | Windows console codepage | — | `ingestion.cli` reconfigures stdout; for other scripts set `PYTHONIOENCODING=utf-8` |
## Observability
| Symptom | Likely cause | How to verify | Fix |
|---|---|---|---|
| No traces in Grafana | The observability overlay was not included in `docker compose up` | `docker ps` for `otel-collector`/`tempo`; check `OTEL_ENABLED` | Include both `-f` files |
| `/metrics` returns 404 | No exporter on `app.state` — `METRICS_ENABLED=false` or `prometheus_client` missing | `main.py` returns 404 rather than an empty 200 on purpose | Install the extra / enable the flag |
| `/metrics` returns 401 | `METRICS_TOKEN` is set | — | Send `Authorization: Bearer <token>` |
| `duocthu_loop_*` and `duocthu_followup_inherited_total` are always 0 | Registered but never incremented — leftovers of the retired ADR 0007 design | grep confirms no `increment` call | Expected; not a data-loss symptom |
| Trace id present in the response but absent from Tempo | Batch export delay, or the collector is down | The deploy workflow retries for 60 s for this reason | Wait, then check the collector |
| `duocthu_trace_write_failed_total` climbing | PostgreSQL unreachable — answers still return (fail-open) | `docker logs docker-postgres-1` | Restore the database; no answers were lost |
## Deployment
| Symptom | Likely cause | How to verify | Fix |
|---|---|---|---|
| Deploy fails at the gout smoke query | The corpus or the generator is broken on the new build | The workflow dumps the last 200 ai-service log lines | Investigate before retrying; the gate is doing its job |
| Deploy fails asserting a Grafana datasource | Provisioning files changed or Grafana did not finish starting | `docker logs docker-grafana-1` | Fix provisioning under `infra/docker/grafana/` |
| Deploy fails at `test -n "$GRAFANA_ADMIN_PASSWORD"` | The GitHub secret is unset | Repository secrets | Set it |
| A change to the `postgres`/`qdrant` service definition has no effect | They are not in the workflow's `up -d` list | `docker inspect` the container | Restart them manually and deliberately |
| The host checkout moved but the app did not update | The build failed after `git reset --hard` | `docker compose ps` | Re-run the build; there is no automatic revert |