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decommission db1086.eqiad.wmnet
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Description

This task will track the decommission-hardware of server db1086.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.

db1086

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.

This is s7 candidate master. Its replacement is db1181, but let's wait for a week to make sure db1181 performs well before decommissioning db1086.

Mentioned in SAL (#wikimedia-operations) [2021-04-19T14:44:23Z] <marostegui@cumin1001> dbctl commit (dc=all): 'Depool db1086 T278229', diff saved to https://phabricator.wikimedia.org/P15468 and previous config saved to /var/cache/conftool/dbconfig/20210419-144422-marostegui.json

Change 681100 had a related patch set uploaded (by Marostegui; author: Marostegui):

[operations/puppet@production] db1086: Disable notifications

https://gerrit.wikimedia.org/r/681100

Change 681100 merged by Marostegui:

[operations/puppet@production] db1086: Disable notifications

https://gerrit.wikimedia.org/r/681100

Change 681292 had a related patch set uploaded (by Marostegui; author: Marostegui):

[operations/puppet@production] instances.yaml: Remove db1086 from dbctl

https://gerrit.wikimedia.org/r/681292

Change 681292 merged by Marostegui:

[operations/puppet@production] instances.yaml: Remove db1086 from dbctl

https://gerrit.wikimedia.org/r/681292

Mentioned in SAL (#wikimedia-operations) [2021-04-20T07:59:49Z] <marostegui@cumin1001> dbctl commit (dc=all): 'Remove db1086 from dbctl T278229', diff saved to https://phabricator.wikimedia.org/P15482 and previous config saved to /var/cache/conftool/dbconfig/20210420-075949-marostegui.json

Change 681515 had a related patch set uploaded (by Marostegui; author: Marostegui):

[operations/puppet@production] mariadb: Decommission db1086

https://gerrit.wikimedia.org/r/681515

Change 681515 merged by Marostegui:

[operations/puppet@production] mariadb: Decommission db1086

https://gerrit.wikimedia.org/r/681515

Marostegui updated the task description. (Show Details)
Marostegui removed a project: Patch-For-Review.
Marostegui added a project: ops-eqiad.

This is ready for DC-Ops

cookbooks.sre.hosts.decommission executed by marostegui@cumin1001 for hosts: db1086.eqiad.wmnet

  • db1086.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
wiki_willy moved this task from Backlog to Decommission on the ops-eqiad board.
wiki_willy added a subscriber: wiki_willy.