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decommission db1081.eqiad.wmnet
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Description

This task will track the decommission-hardware of server db1081.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.

db1081

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.
  • - run homer on cumin host to update switch stack
  • - 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 via netbox, run sre dns cookbook.
  • - reassign task from service owner to DC ops team member depending on site of servee.

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

Event Timeline

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

Not ready until monday

Change 662828 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/puppet@production] instances.yaml: Remove db1081 from dbctl

https://gerrit.wikimedia.org/r/662828

Change 662828 merged by Marostegui:
[operations/puppet@production] instances.yaml: Remove db1081 from dbctl

https://gerrit.wikimedia.org/r/662828

Mentioned in SAL (#wikimedia-operations) [2021-02-09T07:34:55Z] <marostegui@cumin1001> dbctl commit (dc=all): 'Remove db1081 from dbctl T273040', diff saved to https://phabricator.wikimedia.org/P14241 and previous config saved to /var/cache/conftool/dbconfig/20210209-073455-marostegui.json

Change 663161 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/puppet@production] mariadb: Decommission db1081

https://gerrit.wikimedia.org/r/663161

Change 663161 merged by Marostegui:
[operations/puppet@production] mariadb: Decommission db1081

https://gerrit.wikimedia.org/r/663161

cookbooks.sre.hosts.decommission executed by marostegui@cumin1001 for hosts: db1081.eqiad.wmnet

  • db1081.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
Marostegui updated the task description. (Show Details)

This is ready for DCOps!

wiki_willy moved this task from Backlog to Decommission on the ops-eqiad board.
wiki_willy added a subscriber: wiki_willy.

Thanks @Marostegui

This is ready for DCOps!

Cmjohnson updated the task description. (Show Details)