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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

Public bug reported:

This came up in the upgrades SIG room at the Stein PTG:

https://etherpad.openstack.org/p/upgrade-sig-ptg-stein

The request is that failing to archive/purge old deleted records from
the database can cause upgrades to have major downtime because of the
old records (heat and keystone are known major issues here, but clearly
also instances records) - and they would like a nova-status upgrade
check that checks some configured limit on deleted instances and warns
if you should archive/purge prior to starting the upgrade.

The question would be what is a sane default (1000000 soft deleted
instances records?), or something based on a time limit (deleted
instances over 3 years old), etc.

** Affects: nova
     Importance: Wishlist
         Status: Triaged


** Tags: nova-status upgrades

** Changed in: nova
   Importance: Undecided => Wishlist

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https://bugs.launchpad.net/bugs/1791824

Title:
  RFE: add configurable limit nova-status upgrade check for warning on
  archive/purge limit

Status in OpenStack Compute (nova):
  Triaged

Bug description:
  This came up in the upgrades SIG room at the Stein PTG:

  https://etherpad.openstack.org/p/upgrade-sig-ptg-stein

  The request is that failing to archive/purge old deleted records from
  the database can cause upgrades to have major downtime because of the
  old records (heat and keystone are known major issues here, but
  clearly also instances records) - and they would like a nova-status
  upgrade check that checks some configured limit on deleted instances
  and warns if you should archive/purge prior to starting the upgrade.

  The question would be what is a sane default (1000000 soft deleted
  instances records?), or something based on a time limit (deleted
  instances over 3 years old), etc.

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