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Create env_bootstrap_and_migrations.md with guidelines
Added detailed guide for environment bootstrap and migrations guardrails.
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# Environment Bootstrap and Migrations Guardrails
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<details>
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<summary><strong>🧭 Quick Return to Map</strong></summary>
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<br>
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> You are in a sub-page of **Cloud_Serverless**.
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> To reorient, go back here:
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>
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> - [**Cloud_Serverless** — scalable functions and event-driven pipelines](./README.md)
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> - [**WFGY Global Fix Map** — main Emergency Room, 300+ structured fixes](../README.md)
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> - [**WFGY Problem Map 1.0** — 16 reproducible failure modes](../../README.md)
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>
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> Think of this page as a desk within a ward.
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> If you need the full triage and all prescriptions, return to the Emergency Room lobby.
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</details>
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Modern cloud systems rarely fail because of code alone.
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Most incidents happen when a **new environment boots incorrectly**, or when **database / schema migrations run at the wrong time**.
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When environments initialize out of order, migrations can race with services, schemas drift between regions, and agents read partially upgraded data.
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This page provides guardrails for safe environment bootstrap and predictable migration workflows in serverless and event-driven systems.
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---
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## When to use this page
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* New deployments fail on the first request but work after retry.
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* Database schema mismatches appear after a rollout.
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* Services start before dependencies are ready.
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* Jobs run migrations twice or skip them entirely.
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* A new region or environment returns inconsistent responses.
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---
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## Open these first
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* Boot order and deploy sequencing:
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[Bootstrap Ordering](https://github.com/onestardao/WFGY/blob/main/ProblemMap/bootstrap-ordering.md)
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* Cross-service waits during rollout:
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[Deployment Deadlock](https://github.com/onestardao/WFGY/blob/main/ProblemMap/deployment-deadlock.md)
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* First request fails after a deploy:
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[Pre-Deploy Collapse](https://github.com/onestardao/WFGY/blob/main/ProblemMap/predeploy-collapse.md)
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* Payload contracts and schema stability:
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[Data Contracts](https://github.com/onestardao/WFGY/blob/main/ProblemMap/data-contracts.md)
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* Retrieval correctness after index rebuild:
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[Retrieval Playbook](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-playbook.md)
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---
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## Acceptance targets
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* Environment bootstrap completes without manual retries.
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* Migrations execute exactly once per revision.
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* Schema versions consistent across all regions.
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* No service reads data from a partially migrated schema.
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* Migration runtime predictable and observable.
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For RAG stacks:
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* ΔS(question, retrieved) drift ≤ 0.03 after reindex.
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* Index metadata identical across environments before traffic.
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---
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## Fix in 60 seconds
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1. **Separate bootstrap from service startup**
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Infrastructure initialization, secrets loading, and migrations should run before application services accept traffic.
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2. **Run migrations as a controlled job**
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Execute migrations through a dedicated job runner or CI pipeline rather than inside request handlers.
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3. **Version everything**
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Track `schema_rev`, `index_hash`, and `release_id`.
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Services refuse to start if incompatible versions are detected.
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4. **Gate traffic after bootstrap**
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Block user traffic until health probes confirm:
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* schema ready
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* secrets loaded
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* index parity verified
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5. **Record migration state**
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Store migration history in a durable table so jobs cannot re-run completed migrations.
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---
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## Patterns that work
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* **Migration job runner**
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Use a scheduled job or container task to execute migrations before service rollout.
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* **Immutable environment revisions**
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Each deploy produces a new revision with explicit schema and index versions.
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* **Schema compatibility windows**
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Design migrations so old services can still read during rollout.
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* **Bootstrap contract checks**
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Health probes validate schema version, secrets version, and index hash before allowing traffic.
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---
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## Typical breakpoints → exact fix
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* **Service starts before migration finishes**
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Boot sequence incorrect.
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Gate startup until migration completion.
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Open:
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[Bootstrap Ordering](https://github.com/onestardao/WFGY/blob/main/ProblemMap/bootstrap-ordering.md)
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---
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* **Migration runs twice**
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Retry job executes again without state tracking.
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Add migration history table and idempotent scripts.
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Open:
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[Data Contracts](https://github.com/onestardao/WFGY/blob/main/ProblemMap/data-contracts.md)
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---
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* **Schema mismatch between regions**
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Migration ran only in primary region.
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Replicate migration workflow or rebuild schema in each region.
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Open:
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[Multi-Region and Failover Routing](./multi_region_and_failover_routing.md)
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---
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* **RAG index corrupted after deploy**
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Index rebuilt during live traffic.
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Gate queries until index parity verified.
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Open:
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[Retrieval Playbook](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-playbook.md)
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---
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## Minimal recipes you can copy
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### A) Migration job contract
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```txt
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Migration workflow
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- revision: r2025-08-30
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- schema_rev: sc-21
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Steps
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1. acquire migration lock
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2. run migration scripts
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3. verify schema version
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4. release lock
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5. record revision in migration_history
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````
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---
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### B) Environment bootstrap gate
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```txt
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Startup gate conditions
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- secrets_rev matches expected version
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- schema_rev compatible with service
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- index_hash equal across nodes
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- health probes return OK
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Only then enable user traffic.
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```
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---
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### C) Migration history table
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```txt
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Table: migration_history
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Columns
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- revision_id
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- applied_at
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- checksum
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- operator
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Rule
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- reject duplicate revision_id
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- migrations run strictly in order
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```
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---
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## Observability you must add
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* Migration duration and success rate.
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* Schema version per environment.
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* Bootstrap failure counts.
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* Deployment revision vs schema revision mismatch.
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* Index parity checks during rollout.
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---
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## Verification
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* Environment boots without retries.
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* Migration runs exactly once per revision.
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* All services report identical schema version.
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* No errors appear during first request after deploy.
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---
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## When to escalate
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* Schema mismatches continue after migration replay.
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* Services boot successfully but fail on first request.
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* Migration locks remain active indefinitely.
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* Index rebuild causes retrieval drift.
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Investigate deploy sequencing, schema compatibility design, and environment bootstrap contracts.
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---
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### 🔗 Quick-Start Downloads (60 sec)
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| Tool | Link | 3-Step Setup |
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| -------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------- |
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| **WFGY 1.0 PDF** | [Engine Paper](https://github.com/onestardao/WFGY/blob/main/I_am_not_lizardman/WFGY_All_Principles_Return_to_One_v1.0_PSBigBig_Public.pdf) | 1️⃣ Download · 2️⃣ Upload to your LLM · 3️⃣ Ask “Answer using WFGY + \<your question>” |
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| **TXT OS (plain-text OS)** | [TXTOS.txt](https://github.com/onestardao/WFGY/blob/main/OS/TXTOS.txt) | 1️⃣ Download · 2️⃣ Paste into any LLM chat · 3️⃣ Type “hello world” — OS boots instantly |
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---
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<!-- WFGY_FOOTER_START -->
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### Explore More
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| Layer | Page | What it’s for |
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| ------------- | --------------------------------------------------------------------------- | ----------------------------------- |
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| ⭐ Proof | [WFGY Recognition Map](/recognition/README.md) | External citations and integrations |
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| ⚙️ Engine | [WFGY 1.0](/legacy/README.md) | Original tension engine |
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| ⚙️ Engine | [WFGY 2.0](/core/README.md) | Production reasoning kernel |
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| ⚙️ Engine | [WFGY 3.0](/TensionUniverse/EventHorizon/README.md) | TXT Singularity engine |
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| 🗺️ Map | [Problem Map 1.0](/ProblemMap/README.md) | 16 reproducible failure modes |
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| 🗺️ Map | [Problem Map 2.0](/ProblemMap/wfgy-rag-16-problem-map-global-debug-card.md) | Global Debug Card |
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| 🗺️ Map | [Problem Map 3.0](/ProblemMap/wfgy-ai-problem-map-troubleshooting-atlas.md) | AI troubleshooting atlas |
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| 🧰 App | [TXT OS](/OS/README.md) | Plain-text semantic OS |
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| 🏡 Onboarding | [Starter Village](/StarterVillage/README.md) | Guided entry |
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If this repository helped, starring it improves discovery so more builders can find it.
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<!-- WFGY_FOOTER_END -->
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