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feat(ops): install the self-healing host health monitor - #53
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Promotes the reviewed draft to scripts/check_system_health.py (it was kept in docs/drafts so root's cron would not pick it up before the containers had healthchecks). Adds mount, Docker-health, restart-count, per-container OOM, systemd-service, backup-age and Prefect DB-size checks, restarts unhealthy containers with a budget of 3 per 6 hours, matches container names exactly, restarts prefect-server through systemd, replaces the permanently-tripped "swap > 60%" alert with swap-in rate, and adds --dry-run. Already installed on the Pi and running from cron; its tests (server/tests/test_health_script.py) now exercise this file directly. Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
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Summary
Promotes the reviewed draft of the host health monitor to
scripts/check_system_health.py. It is already installed and running on the Pi (root's cron, first real run 09:15 UTC: all checks ran, 0 alerts); this PR makesmainmatch.prefect-serverunit) with a budget of 3 per 6 hours per container.travelnetas running whenevertravelnet-nginxwas);prefect-serveris restarted through systemd; the permanently-tripped "swap > 60 %" alert is replaced by swap > 90 % plus swap-in rate.--dry-runmode, and state kept in/var/tmpso it survives reboots.docs/drafts/.server/tests/test_health_script.py(26 tests) now runs against this file directly.Note for the Pi
The Pi's working tree already contains this exact file as an uncommitted change. After merging, run
git checkout -- scripts/check_system_health.py && git pull --ff-only.🤖 Generated with Claude Code