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decommission db1095
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Description

This task will track the decommission-hardware of server db1095.

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.

db1095

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

Event Timeline

Change 661345 had a related patch set uploaded (by Jcrespo; owner: Jcrespo):
[operations/puppet@production] install_server: Decommission db1095, substitute with db1171

https://gerrit.wikimedia.org/r/661345

Mentioned in SAL (#wikimedia-operations) [2021-02-04T14:43:04Z] <jynus> stop db1095 instance in preparation of its decom T273732

Change 661345 merged by Jcrespo:
[operations/puppet@production] install_server: Decommission db1095, substitute with db1171

https://gerrit.wikimedia.org/r/661345

cookbooks.sre.hosts.decommission executed by jynus@cumin1001 for hosts: db1095.eqiad.wmnet

  • db1095.eqiad.wmnet (PASS)
    • Downtimed host on Icinga
    • Found physical host
    • Downtimed management interface on Icinga
    • Wiped bootloaders
    • Powered off
    • Set Netbox status to Decommissioning and deleted all non-mgmt interfaces and related IPs
    • Removed from DebMonitor
    • Removed from Puppet master and PuppetDB

This is almost ready (and even we have good backups), but running a backup process now to check new server db1171 works as well as this old one before reassigning it to dc-ops.

jcrespo updated the task description. (Show Details)
jcrespo edited subscribers, added: Cmjohnson; removed: jcrespo.
jcrespo added a subscriber: jcrespo.
wiki_willy added projects: ops-eqiad, DC-Ops.
wiki_willy moved this task from Backlog to Decommission on the ops-eqiad board.
wiki_willy added a subscriber: wiki_willy.
Cmjohnson updated the task description. (Show Details)