Two prod-readiness hardening changes:
DB tuning scales with the container budget. Replace the fixed 8 GB
20-tuning.sql with 20-tuning.sh, which derives shared_buffers (25%),
effective_cache_size (75%), work_mem, maintenance_work_mem and
duckdb.max_memory (50%) from the DB_MEMORY the compose db service now passes in.
The ratios reproduce the historical 8 GB tuning exactly and scale linearly, so
the 48 GB prod box (db_memory 16g) gets shared_buffers 4 GB / duckdb 8 GB with
no separate edit. Beta/local (8g default) are unchanged. Docs that told
operators to raise the tuning by hand are updated.
Boot ordering for the self-hosted archive. On an openmeteo host, install a
docker.service drop-in (Wants/After rclone-om.service) so Docker starts after
the object-storage mount is ready on every boot — the restart-policy containers
never bind an empty mount point. rclone-om is Type=notify, so After waits for
the mount to actually be ready. Cleaned up when openmeteo is toggled off.
Get the 45-year historical record off the rate-limited public Open-Meteo
archive API by running a private Open-Meteo instance that serves the
era5_seamless blend (0.1° ERA5-Land + 0.25° ERA5 for gusts) from the
compressed .om archive in object storage, mounted on the host with rclone.
- climate.py: make ARCHIVE_URL env-driven (THERMOGRAPH_ARCHIVE_URL) and pin
models=era5_seamless on the archive fetches only, so a self-hosted instance
serves the same 0.1° resolution; forecast path unchanged. The public API's
default is already seamless, so dev/beta (URL unset) behave identically.
- docker-compose.openmeteo.yml: open-meteo-api + two rolling sync workers
(era5_land 0.1°, era5 0.25° for gusts), bind-mounting the object-storage
mount; the overlay points the app at the local instance.
- Makefile: om-up / om-down / om-backfill (one-time full-history backfill).
- Terraform: per-host openmeteo flag layers the overlay, renders OM_DATA_DIR,
and provisions the host rclone systemd mount from the bucket credentials.
- deploy/openmeteo: operator runbook + rclone mount unit template.
