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The rpi-sofia under-voltage alert keyed off the sticky firmware bit (rpi_under_voltage_occurred == 1), which latches on the first brown-out and stays 1 until the Pi reboots. With alert-on-change routing it re-paged on every boot cycle and sat firing for ~211h of the last 14d — Viktor reported "getting a few of these lately" — and it disagreed with the HA-sofia dashboard, which shows the live state and reads OK once voltage recovers. Can't just switch to the live bit: rpi_under_voltage_now never registered once in 14d (brown-outs are sub-second and fall between the 1-min textfile-collector samples), so the sticky bit is the only reliable detector. Fix: edge-trigger on a NEW latch via increase(rpi_under_voltage_occurred[1h]) > 0. Fires once per brown-out and auto-resolves ~1h later (~2h active over the same 14d instead of ~211h); counter-reset handling makes a clean reboot a no-op. Both real brown-out events in the window are still caught. Docs updated in the same commit (monitoring.md). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> |
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| modules/monitoring | ||
| imports.tf | ||
| main.tf | ||
| secrets | ||
| terragrunt.hcl | ||