bvandeusen
6cf70e22db
Mitigation for the nightly fabledscribe Postgres outage on the vdnt-docker02 Swarm node (incidents 2026-05-15/16/17 around 03:50 UTC). Confirmed kill chain (not the trigger): a brief host-level setns/exec stall makes the Docker healthcheck exec fail with exit 1 → unhealthy → SIGKILL → fast-shutdown can't finish on NFS in 10s → exit 137 → swarm restart_policy.max_attempts: 5 burns out → DB stays dead. Hardens the `db` service so a transient host blip can't escalate to killing the database: - stop_grace_period: 120s (gives PG room to fsync on shutdown) - healthcheck: interval 30s / timeout 10s / retries 10 / start_period 180s (only gates app startup order — not authoritative liveness) - prod: restart_policy condition=on-failure, max_attempts=0, window=120s - quickstart/dev: restart: unless-stopped Host-side trigger (what stalls runc/exec at ~03:50 UTC) is still under investigation — see project_pg_nightly_outage.md. Note: the Portainer prod stack differs from docker-compose.prod.yml here (NFS bind, traefik labels, no ollama). The same `db:` block needs to be pasted into Portainer for the prod mitigation to apply. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
89 lines
2.3 KiB
YAML
89 lines
2.3 KiB
YAML
services:
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app:
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image: git.fabledsword.com/bvandeusen/fabledassistant:latest
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environment:
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DATABASE_URL: "postgresql+asyncpg://fabled:${DB_PASSWORD}@db:5432/fabledassistant"
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SECRET_KEY: "${SECRET_KEY}"
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OLLAMA_URL: "http://ollama:11434"
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OLLAMA_MODEL: "${OLLAMA_MODEL:-llama3.1}"
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LOG_LEVEL: "${LOG_LEVEL:-INFO}"
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TRUST_PROXY_HEADERS: "true"
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SECURE_COOKIES: "true"
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networks:
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- fabledassistant_backend
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healthcheck:
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test: ["CMD", "python", "-c", "import urllib.request; urllib.request.urlopen('http://localhost:5000/api/health')"]
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interval: 30s
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timeout: 10s
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retries: 3
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start_period: 30s
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deploy:
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restart_policy:
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condition: on-failure
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max_attempts: 5
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db:
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image: postgres:16-alpine
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stop_grace_period: 120s
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volumes:
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- pgdata:/var/lib/postgresql/data
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environment:
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POSTGRES_USER: fabled
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POSTGRES_PASSWORD: "${DB_PASSWORD}"
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POSTGRES_DB: fabledassistant
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networks:
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- fabledassistant_backend
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# Lenient by design: a transient host exec/healthcheck stall (incident:
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# runc setns failures -> "unhealthy" -> SIGKILL -> crash loop) must never
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# escalate to killing the DB. Health here only gates app startup order.
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healthcheck:
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test: ["CMD-SHELL", "pg_isready -U fabled"]
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interval: 30s
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timeout: 10s
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retries: 10
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start_period: 180s
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deploy:
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restart_policy:
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condition: on-failure
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delay: 10s
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max_attempts: 0
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window: 120s
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ollama:
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image: ollama/ollama
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volumes:
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- ollama_models:/root/.ollama
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networks:
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- fabledassistant_backend
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environment:
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OLLAMA_MAX_LOADED_MODELS: "2"
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OLLAMA_KEEP_ALIVE: "30m"
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OLLAMA_FLASH_ATTENTION: "1"
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healthcheck:
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test: ["CMD-SHELL", "ollama list || exit 1"]
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interval: 30s
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timeout: 10s
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retries: 5
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start_period: 30s
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deploy:
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placement:
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constraints:
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- node.role == worker
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resources:
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reservations:
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devices:
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- driver: nvidia
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count: all
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capabilities: [gpu]
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restart_policy:
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condition: on-failure
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max_attempts: 5
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volumes:
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pgdata:
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ollama_models:
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networks:
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fabledassistant_backend:
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driver: overlay
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