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decommission db1113.eqiad.wmnet
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This task will track the decommission-hardware of server db1113.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 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

Change 916894 had a related patch set uploaded (by Marostegui; author: Marostegui):

[operations/puppet@production] db1113: Disable notifications

Mentioned in SAL (#wikimedia-operations) [2023-05-08T05:10:37Z] <marostegui@cumin1001> dbctl commit (dc=all): 'Depool db1113 (s5,s6) T336029', diff saved to and previous config saved to /var/cache/conftool/dbconfig/20230508-051036-root.json

Change 916894 merged by Marostegui:

[operations/puppet@production] db1113: Disable notifications

Change 917301 had a related patch set uploaded (by Marostegui; author: Marostegui):

[operations/puppet@production] instances.yaml: Remove db1113 (s5,s6)

Change 917301 merged by Marostegui:

[operations/puppet@production] instances.yaml: Remove db1113 (s5,s6)

Mentioned in SAL (#wikimedia-operations) [2023-05-08T11:11:14Z] <marostegui@cumin1001> dbctl commit (dc=all): 'Remove db1113 from dbctl T336029', diff saved to and previous config saved to /var/cache/conftool/dbconfig/20230508-111113-marostegui.json

Ladsgroup moved this task from Ready to In progress on the DBA board.EditedWed, May 10, 10:03 AM

DBA-specific checklist:

  • Remove host from dbctl (done or NA)
  • Make puppet patch cleaning the rest up (DO NOT merge)
  • Run the decommissioning script:
sudo cookbook sre.hosts.decommission -t T336029 db1113.eqiad.wmnet
  • Merge the puppet patch
  • Remove from zacillo
    • In IRC: !log Removing db1113 from zarcillo T336029
    • In cumin: sudo db-mysql db1215 -A zarcillo
set binlog_format='ROW';
delete from servers where hostname="db1113";
delete from instances where name like 'db1113%';
delete from section_instances where instance like 'db1113%';
  • Remove host from orchestrator
  • Update the task and hand it over to dcops

Change 918417 had a related patch set uploaded (by Ladsgroup; author: Amir Sarabadani):

[operations/puppet@production] Remove db1113 from puppet

cookbooks.sre.hosts.decommission executed by ladsgroup@cumin1001 for hosts: db1113.eqiad.wmnet

  • db1113.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

Change 918417 merged by Ladsgroup:

[operations/puppet@production] Remove db1113 from puppet

Mentioned in SAL (#wikimedia-operations) [2023-05-10T10:26:47Z] <Amir1> Removing db1113 from zarcillo T336029

Ladsgroup edited projects, added ops-eqiad; removed Patch-For-Review.
Ladsgroup moved this task from In progress to Done on the DBA board.
Ladsgroup updated the task description. (Show Details)
Ladsgroup added a subscriber: Ladsgroup.
Jclark-ctr updated the task description. (Show Details)