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Decommission db2048.codfw.wmnet
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Description

This task will track the decommission of server db2048.codfw.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.

db2048

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.
  • - 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.
  • - remove all remaining puppet references (include role::spare) and all host entries in the puppet repo
  • - remove ALL dns entries except the asset tag mgmt entries.
  • - reassign task from service owner to DC ops team member depending on site of server: codfw = @Papaul, eqiad = @Jclark-ctr, all other sites = @RobH.

End service owner steps / Begin DC-Ops team steps:

  • - disable switch port / set to asset tag if host isn't being unracked / remove from switch if being unracked.
  • - system disks wiped (by onsite)
  • - determine system age, under 5 years are reclaimed to spare, over 5 years are decommissioned. If uncertain, ask @wiki_willy.
  • - IF DECOM: system unracked and decommissioned (by onsite), update netbox with result and set state to offline
  • - 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.

Details

Related Gerrit Patches:

Event Timeline

Marostegui triaged this task as Medium priority.Mon, Nov 11, 8:08 AM
Marostegui created this task.
Marostegui moved this task from Triage to In progress on the DBA board.

Change 550089 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/puppet@production] mariadb: Set db2048 as spare

https://gerrit.wikimedia.org/r/550089

Mentioned in SAL (#wikimedia-operations) [2019-11-11T08:21:09Z] <marostegui> Remove db2048 from tendril and zarcillo T237913

Change 550091 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/mediawiki-config@master] db-eqiad,db-codfw.php: Remove db2048 from config

https://gerrit.wikimedia.org/r/550091

Change 550091 merged by jenkins-bot:
[operations/mediawiki-config@master] db-eqiad,db-codfw.php: Remove db2048 from config

https://gerrit.wikimedia.org/r/550091

Mentioned in SAL (#wikimedia-operations) [2019-11-11T08:27:23Z] <marostegui@deploy1001> Synchronized wmf-config/db-eqiad.php: Remove db2048 from config T237913 (duration: 00m 54s)

Change 550089 merged by Marostegui:
[operations/puppet@production] mariadb: Set db2048 as spare

https://gerrit.wikimedia.org/r/550089

Mentioned in SAL (#wikimedia-operations) [2019-11-11T08:28:21Z] <marostegui@deploy1001> Synchronized wmf-config/db-codfw.php: Remove db2048 from config T237913 (duration: 00m 51s)

Mentioned in SAL (#wikimedia-operations) [2019-11-11T08:28:38Z] <marostegui> Stop MySQL on db2048 before decommissioning - T237913

Marostegui updated the task description. (Show Details)

Change 550394 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/puppet@production] mariadb: Remove db2048 from puppet

https://gerrit.wikimedia.org/r/550394

Change 550395 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/dns@master] wmnet: Remove production DNS entries for db2048.codfw.wmnet

https://gerrit.wikimedia.org/r/550395

cookbooks.sre.hosts.decommission executed by marostegui@cumin1001 for hosts: db2048.codfw.wmnet

  • db2048.codfw.wmnet (PASS)
    • Downtimed host on Icinga
    • Downtimed management interface on Icinga
    • Wiped bootloaders
    • Powered off
    • Set Netbox status to Decommissioning
    • Removed from DebMonitor
    • Removed from Puppet master and PuppetDB

Change 550394 merged by Marostegui:
[operations/puppet@production] mariadb: Remove db2048 from puppet

https://gerrit.wikimedia.org/r/550394

Change 550395 merged by Marostegui:
[operations/dns@master] wmnet: Remove production DNS entries for db2048.codfw.wmnet

https://gerrit.wikimedia.org/r/550395

Marostegui reassigned this task from Marostegui to Papaul.Tue, Nov 12, 7:00 AM
Marostegui edited projects, added decommission, ops-codfw; removed Patch-For-Review, DBA.
Marostegui updated the task description. (Show Details)
Marostegui moved this task from Backlog to pending onsite steps (codfw) on the decommission board.

Host ready for @Papaul

Papaul moved this task from Backlog to Decommission on the ops-codfw board.Tue, Nov 12, 11:41 PM
papaul@asw-a-codfw# show | compare 
[edit interfaces interface-range vlan-private1-a-codfw]
-    member ge-1/0/0;
[edit interfaces interface-range disabled]
     member ge-6/0/16 { ... }
+    member ge-1/0/0;
[edit interfaces]
-   ge-1/0/0 {
-       description db2048;
-   }
Papaul updated the task description. (Show Details)Thu, Nov 14, 5:09 PM
Papaul updated the task description. (Show Details)Wed, Nov 20, 8:06 PM

Change 552539 had a related patch set uploaded (by Papaul; owner: Papaul):
[operations/dns@master] DNS: Remove mgnt DNS for db2048 and db2061

https://gerrit.wikimedia.org/r/552539

Change 552539 abandoned by Papaul:
DNS: Remove mgnt DNS for db2048 and db2061

Reason:
Mistakenly removed a lot on DNS entries for others servers in the wmnet file. Have to redo.

https://gerrit.wikimedia.org/r/552539

Change 552542 had a related patch set uploaded (by Papaul; owner: Papaul):
[operations/dns@master] DNS: Remove mgmt DNS for db2048 and db2061

https://gerrit.wikimedia.org/r/552542

Change 552542 merged by Papaul:
[operations/dns@master] DNS: Remove mgmt DNS for db2048 and db2061

https://gerrit.wikimedia.org/r/552542

Papaul closed this task as Resolved.Fri, Nov 22, 11:19 PM
Papaul updated the task description. (Show Details)

Complete