Former gerrit production host (hardware) gerrit1001 has been completely removed from service and today the decom cookbook destroyed it succesfully. (-> T336427).

This ticket is for 2 things:

• hand-over to dcops so they physically recycle the machine

• give back special public IP 208.80.154.137 (https://netbox.wikimedia.org/ipam/ip-addresses/4630/) which is now not used anymore (also known as gerrit-old.wikimedia.org)

We are supposed to use the template linked to from https://wikitech.wikimedia.org/wiki/Server_Lifecycle#Remove_from_production

so here it goes:

This task will track the decommission-hardware of server gerrit1001.wikimedia.org.

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.

gerrit1001.wikimedia.org

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.