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decommission db1126.eqiad.wmnet
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Description

This task will track the decommission-hardware of server <enter FQDN of server here>.

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.

db1126

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 no owner and ensure the site project (ops-sitename depending on site of server) is assigned.

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.

Event Timeline

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

Not ready yet

Mentioned in SAL (#wikimedia-operations) [2023-11-30T08:40:16Z] <marostegui@cumin1001> dbctl commit (dc=all): 'Depool db1126 T352362', diff saved to https://phabricator.wikimedia.org/P53963 and previous config saved to /var/cache/conftool/dbconfig/20231130-084015-root.json

Change 979018 had a related patch set uploaded (by Marostegui; author: Marostegui):

[operations/puppet@production] db1126: Disable notifications

https://gerrit.wikimedia.org/r/979018

Change 979018 merged by Marostegui:

[operations/puppet@production] db1126: Disable notifications

https://gerrit.wikimedia.org/r/979018

Change 979022 had a related patch set uploaded (by Marostegui; author: Marostegui):

[operations/puppet@production] instances.yaml: Remove db1126 from dbctl

https://gerrit.wikimedia.org/r/979022

Change 979022 merged by Marostegui:

[operations/puppet@production] instances.yaml: Remove db1126 from dbctl

https://gerrit.wikimedia.org/r/979022

Mentioned in SAL (#wikimedia-operations) [2023-11-30T08:46:56Z] <marostegui@cumin1001> dbctl commit (dc=all): 'Remove db1126 from dbctl T352362', diff saved to https://phabricator.wikimedia.org/P53964 and previous config saved to /var/cache/conftool/dbconfig/20231130-084655-marostegui.json

Change 979096 had a related patch set uploaded (by Marostegui; author: Marostegui):

[operations/puppet@production] mariadb: Remove db1126

https://gerrit.wikimedia.org/r/979096

Change 979096 merged by Marostegui:

[operations/puppet@production] mariadb: Remove db1126

https://gerrit.wikimedia.org/r/979096

cookbooks.sre.hosts.decommission executed by marostegui@cumin1001 for hosts: db1126.eqiad.wmnet

  • db1126.eqiad.wmnet (PASS)
    • Downtimed host on Icinga/Alertmanager
    • Found physical host
    • Downtimed management interface on Alertmanager
    • Wiped all swraid, partition-table and filesystem signatures
    • Powered off
    • [Netbox] Set status to Decommissioning, deleted all non-mgmt IPs, updated switch interfaces (disabled, removed vlans, etc)
    • Configured the linked switch interface(s)
    • Removed from DebMonitor
    • Removed from Puppet master and PuppetDB
Marostegui assigned this task to Jclark-ctr.
Marostegui updated the task description. (Show Details)
Marostegui added projects: ops-eqiad, DC-Ops.
Marostegui moved this task from Blocked to Done on the DBA board.

This is ready for DC-Ops

Jclark-ctr updated the task description. (Show Details)