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Maniphest T384912

decommission es1025.eqiad.wmnet
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Description

This task will track the decommission-hardware of server es1025.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.

es1025.eqiad.wmnet

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.
  • - IF RECLAIM: set netbox state to 'inventory' and hostname to asset tag

Details

SubjectRepoBranchLines +/-
es1025.yaml, site.pp, backup1002.cnf.erb: Remove es1025operations/puppetproduction+1 -9
instances.yaml: remove es1025operations/puppetproduction+0 -1
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Related Objects
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StatusSubtypeAssignedTask
Unknown Object (Task)
 ResolvedJhancock.wmT378146 Q2:rack/setup/install es204[1-6]
Unknown Object (Task)
 ResolvedJhancock.wmT378143 Q2:rack/setup/install es104[1-6]
 ResolvedMarosteguiT382569 Productionize es104[1-6]
 ResolvedMarosteguiT383199 Decommission es102[0-5]
 ResolvedRequestPapaulT384912 decommission es1025.eqiad.wmnet

Event Timeline

Marostegui assigned this task to FCeratto-WMF.Jan 28 2025, 11:20 AM
Marostegui created this task.
Marostegui moved this task from Triage to In progress on the DBA board.
Marostegui added a parent task: T383199: Decommission es102[0-5].
Marostegui mentioned this in T383199: Decommission es102[0-5].
FCeratto-WMF added a comment.EditedJan 29 2025, 10:34 AM

Starting decommissioning

  • Depool the host:
sudo dbctl instance es1025 depool
sudo dbctl config commit -m "Depool es1025 T384912"
  • Make puppet patch to remove it from dbctl
  • Merge the puppet patch
  • Run dbctl commit:
sudo dbctl config commit -m "Remove es1025 from dbctl T384912"
  • Make puppet patch cleaning the rest up (DO NOT merge)
  • Run the decommissioning script:
sudo cookbook sre.hosts.decommission -t T384912 es1025.eqiad.wmnet
  • Merge the puppet patch
  • Remove from zacillo
    • In IRC: !log Removing es1025 from zarcillo T384912
    • In cumin: sudo db-mysql db1215 -A zarcillo
set binlog_format='ROW';
delete from servers where hostname="es1025";
delete from instances where name like 'es1025%';
delete from section_instances where instance like 'es1025%';
  • Remove host from orchestrator
  • Update the task and hand it over to dcops
FCeratto-WMF changed the task status from Open to In Progress.Jan 29 2025, 10:34 AM
Stashbot added a comment.Jan 29 2025, 10:36 AM

Mentioned in SAL (#wikimedia-operations) [2025-01-29T10:36:53Z] <fceratto@cumin1002> dbctl commit (dc=all): 'Depool es1025 T384912', diff saved to https://phabricator.wikimedia.org/P72730 and previous config saved to /var/cache/conftool/dbconfig/20250129-103652-fceratto.json

gerritbot added a comment.Jan 29 2025, 10:39 AM

Change #1114962 had a related patch set uploaded (by Federico Ceratto; author: Federico Ceratto):

[operations/puppet@production] instances.yaml: remove es1025

https://gerrit.wikimedia.org/r/1114962

gerritbot added a project: Patch-For-Review.Jan 29 2025, 10:39 AM
gerritbot added a comment.Jan 29 2025, 10:50 AM

Change #1114962 merged by Federico Ceratto:

[operations/puppet@production] instances.yaml: remove es1025

https://gerrit.wikimedia.org/r/1114962

Stashbot added a comment.Jan 29 2025, 10:52 AM

Mentioned in SAL (#wikimedia-operations) [2025-01-29T10:52:33Z] <fceratto@cumin1002> dbctl commit (dc=all): 'Remove es1025 from dbctl T384912', diff saved to https://phabricator.wikimedia.org/P72734 and previous config saved to /var/cache/conftool/dbconfig/20250129-105232-fceratto.json

gerritbot added a comment.Jan 29 2025, 11:07 AM

Change #1114969 had a related patch set uploaded (by Federico Ceratto; author: Federico Ceratto):

[operations/puppet@production] es1025.yaml, site.pp, backup1002.cnf.erb: Remove es102

https://gerrit.wikimedia.org/r/1114969

ops-monitoring-bot added a comment.Jan 29 2025, 12:08 PM

cookbooks.sre.hosts.decommission executed by fceratto@cumin1002 for hosts: es1025.eqiad.wmnet

  • es1025.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
gerritbot added a comment.Jan 29 2025, 12:09 PM

Change #1114969 merged by Federico Ceratto:

[operations/puppet@production] es1025.yaml, site.pp, backup1002.cnf.erb: Remove es1025

https://gerrit.wikimedia.org/r/1114969

FCeratto-WMF changed the task status from In Progress to Open.EditedJan 29 2025, 12:26 PM
FCeratto-WMF removed FCeratto-WMF as the assignee of this task.
FCeratto-WMF updated the task description. (Show Details)
FCeratto-WMF edited projects, added DC-Ops, ops-eqiad; removed Patch-For-Review, DBA.
FCeratto-WMF subscribed.

The host is ready for DC-ops to decommission

Papaul moved this task from Backlog to Decommission on the ops-eqiad board.Jan 29 2025, 2:29 PM
Papaul closed this task as Resolved.Jan 29 2025, 5:17 PM
Papaul claimed this task.
Papaul updated the task description. (Show Details)
Papaul subscribed.

Complete

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