This alert seems to be firing a lot and then recovering:
https://wikitech.wikimedia.org/wiki/Monitoring/check_systemd_state 00:27 -icinga-wm:#wikimedia-operations- PROBLEM - Check systemd state on planet1002 is CRITICAL: CRITICAL - degraded: The following units failed: planet-update-en.service https://wikitech.wikimedia.org/wiki/Monitoring/check_systemd_state 01:26 -icinga-wm:#wikimedia-operations- PROBLEM - Check systemd state on planet1002 is CRITICAL: CRITICAL - degraded: The following units failed: planet-update-en.service https://wikitech.wikimedia.org/wiki/Monitoring/check_systemd_state 02:26 -icinga-wm:#wikimedia-operations- PROBLEM - Check systemd state on planet1002 is CRITICAL: CRITICAL - degraded: The following units failed: planet-update-en.service https://wikitech.wikimedia.org/wiki/Monitoring/check_systemd_state 03:26 -icinga-wm:#wikimedia-operations- PROBLEM - Check systemd state on planet1002 is CRITICAL: CRITICAL - degraded: The following units failed: planet-update-en.service https://wikitech.wikimedia.org/wiki/Monitoring/check_systemd_state 04:26 -icinga-wm:#wikimedia-operations- PROBLEM - Check systemd state on planet1002 is CRITICAL: CRITICAL - degraded: The following units failed: planet-update-en.service https://wikitech.wikimedia.org/wiki/Monitoring/check_systemd_state 05:26 -icinga-wm:#wikimedia-operations- PROBLEM - Check systemd state on planet1002 is CRITICAL: CRITICAL - degraded: The following units failed: planet-update-en.service https://wikitech.wikimedia.org/wiki/Monitoring/check_systemd_state 06:24 -icinga-wm:#wikimedia-operations- PROBLEM - Check systemd state on planet1002 is CRITICAL: CRITICAL - degraded: The following units failed: planet-update-en.service https://wikitech.wikimedia.org/wiki/Monitoring/check_systemd_state 07:37 -icinga-wm:#wikimedia-operations- PROBLEM - Check systemd state on planet1002 is CRITICAL: CRITICAL - degraded: The following units failed: planet-update-en.service https://wikitech.wikimedia.org/wiki/Monitoring/check_systemd_state 08:26 -icinga-wm:#wikimedia-operations- PROBLEM - Check systemd state on planet1002 is CRITICAL: CRITICAL - degraded: The following units failed: planet-update-en.service https://wikitech.wikimedia.org/wiki/Monitoring/check_systemd_state 09:25 -icinga-wm:#wikimedia-operations- PROBLEM - Check systemd state on planet1002 is CRITICAL: CRITICAL - degraded: The following units failed: planet-update-en.service https://wikitech.wikimedia.org/wiki/Monitoring/check_systemd_state 10:25 -icinga-wm:#wikimedia-operations- PROBLEM - Check systemd state on planet1002 is CRITICAL: CRITICAL - degraded: The following units failed: planet-update-en.service https://wikitech.wikimedia.org/wiki/Monitoring/check_systemd_state
And indeed, in the logs
Aug 30 10:21:32 planet1002 rawdog[4748]: An error occurred while reading state from /etc/rawdog/en/feeds/39a7970f.state. Aug 30 10:21:32 planet1002 rawdog[4748]: This usually means the file is corrupt, and removing it will fix the problem.