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SciMesh/coordinator/.env.example
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Efremenko Arhip dc92121acc feat(coordinator): worker registry, API contract, logging & DB retry
Align the coordinator with the master PLAN.md (CTX-00, CTX-04) and harden
process startup.

- CTX-00: freeze docs/api-contract.md as the v1 source of truth for the
  Go coordinator and Python worker.
- CTX-04: worker registry — workers table (migration 0002), domain.Worker,
  RegisterWorker use case, WorkerRepository, and POST /workers/register.
- Contract alignment: claim uses `capabilities` (was `workloads`),
  COORDINATOR_TOKEN env (WORKER_AUTH_TOKEN kept as fallback), and
  GET /health now reports database readiness (503 when the DB is down).
- Logging: logs are teed to stdout and an optional rotated file (LOG_FILE)
  via lumberjack, so they survive a container rebuild.
- Startup resilience: the initial DB connection is retried with backoff,
  so the coordinator waits for Postgres to boot instead of crash-looping.
2026-07-23 13:45:31 +03:00

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# Copy to .env and adjust. All settings are read from the environment.
COORDINATOR_ADDR=:8080
DATABASE_URL=postgres://scimesh:scimesh@localhost:5432/scimesh?sslmode=disable
# Shared bearer token every worker must present. Leave empty to disable auth (dev only).
WORKER_AUTH_TOKEN=change-me
# Logging. LOG_LEVEL: debug|info|warn|error. LOG_FILE empty = stdout only;
# set a path to also write a size-rotated file (kept across restarts).
LOG_LEVEL=info
# LOG_FILE=./logs/coordinator.log
# Optional tuning (defaults shown).
DB_MAX_CONNS=10
# How long to keep retrying the initial DB connection while Postgres boots.
DB_CONNECT_TIMEOUT=30s
REQUEST_TIMEOUT=15s
LEASE_DURATION=2m
DEFAULT_MAX_ATTEMPTS=3
REAPER_INTERVAL=30s