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decommission analytics1063.eqiad.wmnet
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Description

This task will track the decommission-hardware of server analytics1063.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.

analytics1063.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 DC ops team member and site project (ops-sitename) 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.

Related Objects

Event Timeline

Change 930580 had a related patch set uploaded (by Stevemunene; author: Stevemunene):

[operations/puppet@production] analytics: Decommission analytics106[1-3] from hadoop cluster

https://gerrit.wikimedia.org/r/930580

Change 930581 had a related patch set uploaded (by Stevemunene; author: Stevemunene):

[operations/puppet@production] analytics: Remove analytics106[1-3] from the HDFS topology

https://gerrit.wikimedia.org/r/930581

Change 930580 merged by Stevemunene:

[operations/puppet@production] analytics: Decommission analytics106[1-3] from hadoop cluster

https://gerrit.wikimedia.org/r/930580

Change 930581 merged by Stevemunene:

[operations/puppet@production] analytics: Remove analytics106[1-3] from the HDFS topology

https://gerrit.wikimedia.org/r/930581

Mentioned in SAL (#wikimedia-analytics) [2023-07-06T11:18:36Z] <stevemunene> decommission analytics1063.eqiad.wmnet T339201

cookbooks.sre.hosts.decommission executed by stevemunene@cumin1001 for hosts: analytics1063.eqiad.wmnet

  • analytics1063.eqiad.wmnet (FAIL)
    • Unable to find/resolve the mgmt DNS record, using the IP instead: 10.65.4.101
    • Host not found on Icinga, unable to downtime it
    • Found physical host
    • Management interface not found on Icinga, unable to downtime it
    • Unable to connect to the host, wipe of swraid, partition-table and filesystem signatures will not be performed: Cumin execution failed (exit_code=2)
    • Host is already 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

ERROR: some step on some host failed, check the bolded items above

Wipe of swraid, partition-table and filesystem signatures was performed during the frrst run of the playbook.

Jclark-ctr updated the task description. (Show Details)