Page MenuHomePhabricator

decommission pc1008.eqiad.wmnet
Closed, ResolvedPublicRequest

Description

This task will track the decommission-hardware of server pc1008.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.

pc1008

Steps for service owner:

https://wikitech.wikimedia.org/wiki/MariaDB/Decommissioning_a_DB_Host

  • - 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 715441 had a related patch set uploaded (by Marostegui; author: Marostegui):

[operations/puppet@production] pc[12]007-010: Disable notifications

https://gerrit.wikimedia.org/r/715441

Change 715441 merged by Marostegui:

[operations/puppet@production] pc[12]007-010: Disable notifications

https://gerrit.wikimedia.org/r/715441

I have disabled notifications to avoid pages from unused hosts. No rush in decommissioning, but I wanted to make sure we don't get paged for hosts that we don't use just in case.

Change 719223 had a related patch set uploaded (by MVernon; author: MVernon):

[operations/puppet@production] pc1008: remove puppet entries for pc1008

https://gerrit.wikimedia.org/r/719223

cookbooks.sre.hosts.decommission executed by mvernon@cumin1001 for hosts: pc1008.eqiad.wmnet

  • pc1008.eqiad.wmnet (PASS)
    • Downtimed host on Icinga
    • Found physical host
    • Downtimed management interface on Icinga
    • Wiped all swraid, partition-table and filesystem signatures
    • 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

Change 719223 merged by MVernon:

[operations/puppet@production] pc1008: remove puppet entries for pc1008

https://gerrit.wikimedia.org/r/719223

Mentioned in SAL (#wikimedia-operations) [2021-09-07T08:44:47Z] <Emperor> removing pc1008 from tendril and zarcillo T289119

Mentioned in SAL (#wikimedia-operations) [2021-09-07T08:51:13Z] <Emperor> removing pc1008 from orchestrator T289119

MatthewVernon updated the task description. (Show Details)
MatthewVernon edited projects, added DC-Ops, ops-eqiad; removed Patch-For-Review.
MatthewVernon added a subscriber: MatthewVernon.

This host is ready for DC-Ops to decommission

Change 719255 had a related patch set uploaded (by MVernon; author: MVernon):

[operations/mediawiki-config@master] wmf-config: remove old parsercache hosts

https://gerrit.wikimedia.org/r/719255

Change 719255 abandoned by MVernon:

[operations/mediawiki-config@master] wmf-config: remove old parsercache hosts

Reason:

https://gerrit.wikimedia.org/r/719255

Change 719257 had a related patch set uploaded (by MVernon; author: MVernon):

[operations/mediawiki-config@master] wmf-config: remove old parsercache hosts

https://gerrit.wikimedia.org/r/719257

Change 719257 merged by jenkins-bot:

[operations/mediawiki-config@master] wmf-config: remove old parsercache hosts

https://gerrit.wikimedia.org/r/719257

Cmjohnson updated the task description. (Show Details)

removed from rack and netbox updated