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Decommission analytics10[28-41]
Open, Stalled, NormalPublic0 Story Points

Description

The analytics10[28-41].eqiad.wmnet hosts are old hadoop nodes that are currently used as Hadoop testing cluster. This was allowed by the SRE team as a special case since testing the Kerberos authentication scheme in cloud/labs was not enough. I hope to start the decommissioning of these nodes maximum by the end of Q2.

  • - all system services confirmed offline from production use
  • - set all icinga checks to maint mode/disabled while reclaim/decommmission takes place.
  • - remove system from all lvs/pybal active configuration
  • - any service group puppet/hiera/dsh config removed
  • - remove site.pp, replace with role(spare::system)
  • - unassign service owner from this task, check off completed steps, and assign to @RobH for followup on below steps.

Steps for DC-Ops:

The following steps cannot be interrupted, as it will leave the system in an unfinished state.

Start non-interrupt steps:

  • - disable puppet on host
  • - power down host
  • - update netbox status to Inventory (if decom) or Planned (if spare)
  • - disable switch port
  • - switch port assignment noted on this task (for later removal)
  • - remove all remaining puppet references (include role::spare)
  • - remove production dns entries
  • - puppet node clean, puppet node deactivate (handled by wmf-decommission-host)
  • - remove dbmonitor entries on neodymium/sarin: sudo curl -X DELETE https://debmonitor.discovery.wmnet/hosts/${HOST_FQDN} --cert /etc/debmonitor/ssl/cert.pem --key /etc/debmonitor/ssl/server.key (handled by wmf-decommission-host)

End non-interrupt steps.

  • - system disks wiped (by onsite)
  • - IF DECOM: system unracked and decommissioned (by onsite), update racktables with result
  • - IF DECOM: switch port configration removed from switch once system is unracked.
  • - IF DECOM: add system to decommission tracking google sheet
  • - IF DECOM: mgmt dns entries removed.
  • - IF RECLAIM: system added back to spares tracking (by onsite)

Event Timeline

elukey changed the task status from Open to Stalled.Jul 8 2019, 2:33 PM
elukey triaged this task as Normal priority.
elukey created this task.

Not actionable yet.

RobH assigned this task to elukey.Jul 15 2019, 6:09 PM
RobH moved this task from Backlog to Blocked on Service Owners on the decommission board.