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decommission db1084.eqiad.wmnet
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This task will track the decommission-hardware of server db1084.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.


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
  • - 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

Event Timeline

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

Not ready yet, let's give its replacement (db1164) a few days of serving traffic.

Mentioned in SAL (#wikimedia-operations) [2021-03-17T08:58:52Z] <marostegui@cumin1001> dbctl commit (dc=all): 'Depool db1084 T276302', diff saved to and previous config saved to /var/cache/conftool/dbconfig/20210317-085852-marostegui.json

Change 673186 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/puppet@production] db1084: Disable notifications

Change 673186 merged by Marostegui:
[operations/puppet@production] db1084: Disable notifications

Change 673838 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/puppet@production] instances.yaml: Remove db1084

Change 673838 merged by Marostegui:
[operations/puppet@production] instances.yaml: Remove db1084

Mentioned in SAL (#wikimedia-operations) [2021-03-22T06:37:33Z] <marostegui@cumin1001> dbctl commit (dc=all): 'Remove db1084 from dbctl T276302', diff saved to and previous config saved to /var/cache/conftool/dbconfig/20210322-063732-marostegui.json

Change 674475 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/puppet@production] mariadb: Decommission db1084

Change 674475 merged by Marostegui:
[operations/puppet@production] mariadb: Decommission db1084

cookbooks.sre.hosts.decommission executed by root@cumin1001 for hosts: db1084.eqiad.wmnet

  • db1084.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 edited subscribers, added: wiki_willy; removed: Marostegui.

This is ready for DC-Ops

Cmjohnson updated the task description. (Show Details)