31 lines
1.1 KiB
Bash
Executable File
31 lines
1.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Enable systemd's hardware watchdog on the Pi.
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# Run this ON THE PI as the `yaris` user:
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# cd /home/yaris/app/yaris-obd && bash deploy/install_watchdog.sh
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set -euo pipefail
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REPO_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
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CONFIG_FILE="$REPO_DIR/deploy/yaris-watchdog.conf"
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CONFIG_DIR="/etc/systemd/system.conf.d"
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CONFIG_DEST="$CONFIG_DIR/yaris-watchdog.conf"
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if [ ! -e /dev/watchdog0 ]; then
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echo "No /dev/watchdog0 device found; refusing to enable a watchdog."
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exit 1
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fi
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sudo install -D -m 0644 "$CONFIG_FILE" "$CONFIG_DEST"
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# Manager configuration is not covered by daemon-reload. Re-exec systemd so the
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# watchdog starts now without requiring an otherwise unnecessary reboot.
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sudo systemctl daemon-reexec
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runtime_watchdog="$(systemctl show --property=RuntimeWatchdogUSec --value)"
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if [ "$runtime_watchdog" = "0" ]; then
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echo "Runtime watchdog did not activate; check $CONFIG_DEST."
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exit 1
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fi
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echo "Hardware watchdog enabled with RuntimeWatchdogUSec=$runtime_watchdog."
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echo "Reboot once when convenient, then rerun this script to verify persistence."
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