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decommission db1085.eqiad.wmnet
Closed, ResolvedPublicRequest

Description

This task will track the decommission-hardware of server db1085.eqiad.wmnet

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.

db1085

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. (likely done by script)
  • - 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, and run homer.
  • - remove all remaining puppet references and all host entries in the puppet repo: https://gerrit.wikimedia.org/r/c/operations/puppet/+/692618
  • - reassign task from service owner to DC ops team member depending on site of server.

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

  • - system disks removed (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: mgmt dns entries removed.
  • - IF RECLAIM: set netbox state to 'inventory' and hostname to asset tag

Related Objects

StatusSubtypeAssignedTask
ResolvedMarostegui
OpenNone
OpenJhernandez
ResolvedRobH
OpenBstorm
ResolvedBstorm
ResolvedMarostegui
ResolvedMarostegui
OpenNone
OpenNone
OpenNone
OpenNone
OpenNone
ResolvedMarostegui
ResolvedRobH
ResolvedMarostegui
ResolvedMarostegui
ResolvedMarostegui
ResolvedRequestwiki_willy
ResolvedRequestCmjohnson
ResolvedRequestCmjohnson
ResolvedRequestCmjohnson
ResolvedRequestCmjohnson

Event Timeline

Marostegui created this task.
Marostegui moved this task from Triage to Blocked on the DBA board.

Wait a few days to make sure its replacement (db1165) works fine.

Change 692575 had a related patch set uploaded (by Kormat; author: Kormat):

[operations/puppet@production] db1085: Disable notifications for decom

https://gerrit.wikimedia.org/r/692575

Change 692575 merged by Kormat:

[operations/puppet@production] db1085: Disable notifications for decom

https://gerrit.wikimedia.org/r/692575

cookbooks.sre.hosts.decommission executed by kormat@cumin1001 for hosts: db1085.eqiad.wmnet

  • db1085.eqiad.wmnet (PASS)
    • Downtimed host on Icinga
    • Found physical host
    • Downtimed management interface on Icinga
    • Wiped bootloaders
    • Powered off
    • Set Netbox status to Decommissioning and deleted all non-mgmt interfaces and related IPs
    • Removed from DebMonitor
    • Removed from Puppet master and PuppetDB

Change 692618 had a related patch set uploaded (by Kormat; author: Kormat):

[operations/puppet@production] db1085: Remove from puppet

https://gerrit.wikimedia.org/r/692618

Change 692618 merged by Kormat:

[operations/puppet@production] db1085: Remove from puppet

https://gerrit.wikimedia.org/r/692618

Kormat edited projects, added ops-eqiad; removed Patch-For-Review, DBA.
Kormat added a subscriber: wiki_willy.
Kormat added a subscriber: Kormat.

Hey DC ops, this machine is now ready for your tender mercies. Thanks!

Mentioned in SAL (#wikimedia-operations) [2021-05-18T16:00:54Z] <kormat@cumin1001> dbctl commit (dc=all): 'db1085 being decommissioned T282096', diff saved to https://phabricator.wikimedia.org/P16073 and previous config saved to /var/cache/conftool/dbconfig/20210518-160053-kormat.json

All decom tasks are complete.