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decommission db1091.eqiad.wmnet
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Description

This task will track the decommission-hardware of server db1091.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.

db1091

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 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: switch port configuration removed from switch once system is unracked.
  • - IF DECOM: mgmt dns entries removed.
  • - IF RECLAIM: set netbox state to 'inventory' and hostname to asset tag

Event Timeline

Marostegui added a parent task: T225060: db1091 crashed.
Marostegui moved this task from Triage to In progress on the DBA board.Tue, Nov 3, 5:42 AM

Change 638343 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/puppet@production] instances.yaml: Remove db1091 from dbctl

https://gerrit.wikimedia.org/r/638343

Change 638343 merged by Marostegui:
[operations/puppet@production] instances.yaml: Remove db1091 from dbctl

https://gerrit.wikimedia.org/r/638343

Marostegui updated the task description. (Show Details)Tue, Nov 3, 6:57 AM

Mentioned in SAL (#wikimedia-operations) [2020-11-03T06:57:57Z] <marostegui@cumin1001> dbctl commit (dc=all): 'Remove db1091 from dbctl T267088', diff saved to https://phabricator.wikimedia.org/P13137 and previous config saved to /var/cache/conftool/dbconfig/20201103-065756-marostegui.json

Mentioned in SAL (#wikimedia-operations) [2020-11-03T06:59:12Z] <marostegui> Remove db1091 from tendril and zarcillo T267088

Change 638352 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/puppet@production] mariadb: Remove puppet entries for db1091

https://gerrit.wikimedia.org/r/638352

cookbooks.sre.hosts.decommission executed by lsobanski@cumin1001 for hosts: db1091.eqiad.wmnet

  • db1091.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 638352 merged by LSobanski:
[operations/puppet@production] mariadb: Remove puppet entries for db1091

https://gerrit.wikimedia.org/r/638352

Mentioned in SAL (#wikimedia-operations) [2020-11-03T13:43:47Z] <sobanski> Removing db1091 from tendril and zarcillo T267088

LSobanski reassigned this task from Marostegui to wiki_willy.Tue, Nov 3, 2:40 PM
LSobanski updated the task description. (Show Details)
LSobanski edited projects, added ops-eqiad, DC-Ops; removed DBA.
LSobanski added a subscriber: LSobanski.
Restricted Application added a project: Operations. · View Herald TranscriptTue, Nov 3, 2:40 PM

This host is ready for DC-Ops to decommission.

Cmjohnson updated the task description. (Show Details)Tue, Nov 3, 4:51 PM
Cmjohnson closed this task as Resolved.Tue, Nov 3, 4:56 PM
Cmjohnson added a subscriber: Cmjohnson.

done