db1053 will be substituted by db1072, then it can be fully decommission.
We still need to:
* ~~Add pending grants/data to db1073~~
* ~~Change m3-slave CNAME to db1073~~
* ~~Move backups to db1073~~
* ~~Change failover candidate on proxies~~
* ~~Failover m3 master to db1072~~
* ~~Decommission, too, db1059~~ T196606
== Decommission Checklist ==
[x] - all system services confirmed offline from production use - should be done by #DBA team set as spare https://gerrit.wikimedia.org/r/440140
[x] - set all icinga checks to maint mode/disabled while reclaim/decommmission takes place. (disabled alerts)
[x] - remove system from all lvs/pybal active configuration - should be done by #DBA team not in dblists
[x] - any service group puppet/heira/dsh config removed - should be done by #DBA team not in hiera
[x] - remove site.pp (replace with role(spare::system) if system isn't shut down immediately during this process.) - should be done by #DBA team: https://gerrit.wikimedia.org/r/440140
START NON-INTERRUPPTABLE STEPS - please assign to @robh for the non-interrupt 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
[] - mark disk #3 as non usable - it has smart errors
[] - mark disk #8 as non usable - it has smart errors
[] - mark disk #10 as non usable - it has smart errors
[] - 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.