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decomission oresrdb100[12]
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Description

Split off from T245161 and T254226. Once T254226 is closed (a couple of days) we should be able to decomission the old oresrdb hosts.

This task will track the decommission-hardware of server <enter FQDN of server here>.

With the launch of updates to the decom cookbook, the majority of these steps can be handled by the service owners directly. The DC Ops team only gets involved once the system has been fully removed from service and powered down by the decommission cookbook.

oresrdb1001:

Steps for service owner:

  • - 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/hiera/dsh config removed
  • - remove site.pp, replace with role(spare::system) recommended to ensure services offline but not 100% required as long as the decom script is IMMEDIATELY run below.
  • - login to cumin host and run the decom cookbook: cookbook sre.hosts.decommission <host fqdn> -t <phab task>. This does: bootloader wipe, host power down, netbox update to decommissioning status, puppet node clean, puppet node deactivate, debmonitor removal.
  • - remove all remaining puppet references (include role::spare) and all host entries in the puppet repo
  • - remove ALL dns entries except the asset tag mgmt entries.
  • - reassign task from service owner to DC ops team member depending on site of server.

End service owner steps / Begin DC-Ops team steps:

  • - disable switch port / set to asset tag if host isn't being unracked / remove from switch if being unracked.
  • - system disks wiped (by onsite)
  • - determine system age, under 5 years are reclaimed to spare, over 5 years are decommissioned.
  • - IF DECOM: system unracked and decommissioned (by onsite), update netbox with result and set state to offline
  • - 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.
  • - IF RECLAIM: set netbox state to 'inventory' and hostname to asset tag

oresrdb1002:

Steps for service owner:

  • - 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/hiera/dsh config removed
  • - remove site.pp, replace with role(spare::system) recommended to ensure services offline but not 100% required as long as the decom script is IMMEDIATELY run below.
  • - login to cumin host and run the decom cookbook: cookbook sre.hosts.decommission <host fqdn> -t <phab task>. This does: bootloader wipe, host power down, netbox update to decommissioning status, puppet node clean, puppet node deactivate, debmonitor removal.
  • - remove all remaining puppet references (include role::spare) and all host entries in the puppet repo
  • - remove ALL dns entries except the asset tag mgmt entries.
  • - reassign task from service owner to DC ops team member depending on site of server.

End service owner steps / Begin DC-Ops team steps:

  • - disable switch port / set to asset tag if host isn't being unracked / remove from switch if being unracked.
  • - system disks wiped (by onsite)
  • - determine system age, under 5 years are reclaimed to spare, over 5 years are decommissioned.
  • - IF DECOM: system unracked and decommissioned (by onsite), update netbox with result and set state to offline
  • - 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.
  • - IF RECLAIM: set netbox state to 'inventory' and hostname to asset tag

Event Timeline

akosiaris triaged this task as Medium priority.

@akosiaris Have any the initial steps been completed with this decom task?

@Cmjohnson No, these are still running. I've updated the task to use the new decom checklist to better reflect the status quo.

Change 604629 had a related patch set uploaded (by Alexandros Kosiaris; owner: Alexandros Kosiaris):
[operations/puppet@production] oresrdb: decommision

https://gerrit.wikimedia.org/r/604629

Change 604629 merged by Alexandros Kosiaris:
[operations/puppet@production] oresrdb: decommision

https://gerrit.wikimedia.org/r/604629

Change 604730 had a related patch set uploaded (by Alexandros Kosiaris; owner: Alexandros Kosiaris):
[operations/puppet@production] oresrdb: Remove the last references from puppet

https://gerrit.wikimedia.org/r/604730

Change 604731 had a related patch set uploaded (by Alexandros Kosiaris; owner: Alexandros Kosiaris):
[operations/dns@master] oresrdb: Remove all DNS entries except mgmt

https://gerrit.wikimedia.org/r/604731

cookbooks.sre.hosts.decommission executed by akosiaris@cumin1001 for hosts: oresrdb[1001-1002].eqiad.wmnet

  • oresrdb1001.eqiad.wmnet (PASS)
    • Downtimed host on Icinga
    • Found physical host
    • Downtimed management interface on Icinga
    • Wiped bootloaders
    • Powered off
    • Set Netbox status to Decommissioning
    • Removed from DebMonitor
    • Removed from Puppet master and PuppetDB
  • oresrdb1002.eqiad.wmnet (PASS)
    • Downtimed host on Icinga
    • Found physical host
    • Downtimed management interface on Icinga
    • Wiped bootloaders
    • Powered off
    • Set Netbox status to Decommissioning
    • Removed from DebMonitor
    • Removed from Puppet master and PuppetDB

Change 604730 merged by Alexandros Kosiaris:
[operations/puppet@production] oresrdb: Remove the last references from puppet

https://gerrit.wikimedia.org/r/604730

Change 604731 merged by Alexandros Kosiaris:
[operations/dns@master] oresrdb: Remove all DNS entries except mgmt

https://gerrit.wikimedia.org/r/604731

@akosiaris Have any the initial steps been completed with this decom task?

They have all been done now.

Cmjohnson added a subscriber: Jclark-ctr.
Cmjohnson removed a subscriber: Cmjohnson.
Cmjohnson updated the task description. (Show Details)