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decommission db2100.codfw.wmnet
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Description

This task will track the decommission-hardware of server db2100.codfw.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.

db2100

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

Event Timeline

Change #1015463 had a related patch set uploaded (by Arnaudb; author: Arnaudb):

[operations/puppet@production] mariadb: removes db2100 after memory failure

https://gerrit.wikimedia.org/r/1015463

ABran-WMF changed the task status from Open to In Progress.Tue, Apr 2, 1:10 PM

waiting for confirmation and merge before running the decommission cookbook

nice! can I get a quick +1 on the patch then? Maybe I should discard the second part

Change #1015463 merged by Arnaudb:

[operations/puppet@production] mariadb: removes db2100 after memory failure

https://gerrit.wikimedia.org/r/1015463

cookbooks.sre.hosts.decommission executed by arnaudb@cumin1002 for hosts: db2100.codfw.wmnet

  • db2100.codfw.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
ABran-WMF changed the task status from In Progress to Open.Wed, Apr 3, 8:11 AM
ABran-WMF removed ABran-WMF as the assignee of this task.
ABran-WMF updated the task description. (Show Details)
ABran-WMF added a project: ops-codfw.
ABran-WMF subscribed.
Jhancock.wm claimed this task.
Jhancock.wm updated the task description. (Show Details)

This host wasn't removed from zarcillo - I have done so.