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decommission db1107.eqiad.wmnet
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Description

This task will track the decommission-hardware of server db1107.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.

db1107

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 and site project (ops-sitename) 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.

Event Timeline

Mentioned in SAL (#wikimedia-operations) [2023-04-11T10:51:00Z] <marostegui@cumin1001> dbctl commit (dc=all): 'Depool db1107 T334447', diff saved to https://phabricator.wikimedia.org/P46305 and previous config saved to /var/cache/conftool/dbconfig/20230411-105100-marostegui.json

Change 907825 had a related patch set uploaded (by Marostegui; author: Marostegui):

[operations/puppet@production] db1107: Disable notifications

https://gerrit.wikimedia.org/r/907825

Change 907825 merged by Marostegui:

[operations/puppet@production] db1107: Disable notifications

https://gerrit.wikimedia.org/r/907825

Change 908197 had a related patch set uploaded (by Marostegui; author: Marostegui):

[operations/puppet@production] instances.yaml: Remove db1107 from dbctl

https://gerrit.wikimedia.org/r/908197

Change 908197 merged by Marostegui:

[operations/puppet@production] instances.yaml: Remove db1107 from dbctl

https://gerrit.wikimedia.org/r/908197

Mentioned in SAL (#wikimedia-operations) [2023-04-12T07:39:21Z] <marostegui@cumin1001> dbctl commit (dc=all): 'Remove db1107 from dbctl T334447', diff saved to https://phabricator.wikimedia.org/P46450 and previous config saved to /var/cache/conftool/dbconfig/20230412-073921-marostegui.json

Change 908684 had a related patch set uploaded (by Marostegui; author: Marostegui):

[operations/puppet@production] mariadb: Remove db1107 from puppet

https://gerrit.wikimedia.org/r/908684

Change 908684 merged by Marostegui:

[operations/puppet@production] mariadb: Remove db1107 from puppet

https://gerrit.wikimedia.org/r/908684

cookbooks.sre.hosts.decommission executed by marostegui@cumin1001 for hosts: db1107.eqiad.wmnet

  • db1107.eqiad.wmnet (WARN)
    • Downtimed host on Icinga/Alertmanager
    • Found physical host
    • Management interface not found on Icinga, unable to downtime it
    • 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 updated the task description. (Show Details)
Marostegui edited projects, added ops-eqiad; removed Patch-For-Review, DBA.
Jclark-ctr updated the task description. (Show Details)