So this system was started (and then not finished) with decom on T164395.
Whatever it's state was, now its online, but not calling into icinga or puppet. As such, I'll be shutting it down shortly and getting it started on decom.
This checklist is able to be copied and pasted into phabricator hardware request tasks for reclaiming systems to spare or decom.
[] - all system services confirmed offline from production use
[] - set all icinga checks to maint mode/disabled while reclaim/decommmission takes place.
[] - remove system from all lvs/pybal active configuration
[] - any service group puppet/heira/dsh config removed
[] - remove site.pp (replace with role(spare::system) if system isn't shut down immediately during this process.)
START NON-INTERRUPPTABLE STEPS
[] - disable puppet on host
[] - power down host
[] - disable switch port
[] - switch port assignment noted on this task (for later removal)
[] - remove all remaining puppet references (include role::spare)
[] - remove production dns entries
[] - puppet node clean, puppet node deactivate
END NON-INTERRUPPTABLE STEPS
[] - system disks wiped (by onsite)
[] - IF DECOM: system unracked and decommissioned (by onsite), update racktables with result
[] - IF DECOM: switch port configration removed from switch once system is unracked.
[] - IF DECOM: add system to decommission tracking google sheet
[] - IF DECOM: mgmt dns entries removed.