Change Details

`scandium.eqiad.wmnet` is in the lab network and is only used to run a single `zuul-merger` instance. The reason we had it in labs is because that is an internal service that does not need to be reached from the internet. The contint1001 (Jenkins/Zuul server) has a public IP address and labs instances will be able to reach it. Hence we should move the `zuul-merger` there which will let us phase out scandium entirely. Stretch goal: refactor the puppet `zuul:merger` class so we can have several instance on a single server (will address T140297) == decommission steps == [] - 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/heira/dsh config removed [] - remove site.pp (replace with role::spare if system isn't shut down immediately during this process.) START NON-INTERRUPPTABLE STEPS [] - disable puppet on host [] - remove all remaining puppet references (include role::spare) [] - power down host [x] - disable switch port [] - remove production dns entries [] - puppet node clean, puppet node deactivate, salt key removed END NON-INTERRUPPTABLE STEPS [] - system disks wiped by onsite [] - system unracked and decommissioned (by onsite), update racktables with result [] - switch port configration removed from asw-a-eqiad for scandium when it is unracked.

`scandium.eqiad.wmnet` is in the lab network and is only used to run a single `zuul-merger` instance. The reason we had it in labs is because that is an internal service that does not need to be reached from the internet. The contint1001 (Jenkins/Zuul server) has a public IP address and labs instances will be able to reach it. Hence we should move the `zuul-merger` there which will let us phase out scandium entirely. Stretch goal: refactor the puppet `zuul:merger` class so we can have several instance on a single server (will address T140297) == decommission steps == [x] - all system services confirmed offline from production use [x] - set all icinga checks to maint mode/disabled while reclaim/decommmission takes place. [x] - remove system from all lvs/pybal active configuration [x] - any service group puppet/heira/dsh config removed [x] - remove site.pp (replace with role::spare if system isn't shut down immediately during this process.) START NON-INTERRUPPTABLE STEPS [x] - disable puppet on host [x] - remove all remaining puppet references (include role::spare) [x] - power down host [x] - disable switch port [x] - remove production dns entries [x] - puppet node clean, puppet node deactivate, salt key removed END NON-INTERRUPPTABLE STEPS [] - system disks wiped by onsite [] - system unracked and decommissioned (by onsite), update racktables with result [] - switch port configration removed from asw-a-eqiad for scandium when it is unracked.

`scandium.eqiad.wmnet` is in the lab network and is only used to run a single `zuul-merger` instance. The reason we had it in labs is because that is an internal service that does not need to be reached from the internet. The contint1001 (Jenkins/Zuul server) has a public IP address and labs instances will be able to reach it. Hence we should move the `zuul-merger` there which will let us phase out scandium entirely. Stretch goal: refactor the puppet `zuul:merger` class so we can have several instance on a single server (will address T140297) == decommission steps == [x] - all system services confirmed offline from production use [x] - set all icinga checks to maint mode/disabled while reclaim/decommmission takes place. [x] - remove system from all lvs/pybal active configuration [x] - any service group puppet/heira/dsh config removed [x] - remove site.pp (replace with role::spare if system isn't shut down immediately during this process.) START NON-INTERRUPPTABLE STEPS [x] - disable puppet on host [x] - remove all remaining puppet references (include role::spare) [x] - power down host [x] - disable switch port [x] - remove production dns entries [x] - puppet node clean, puppet node deactivate, salt key removed END NON-INTERRUPPTABLE STEPS [] - system disks wiped by onsite [] - system unracked and decommissioned (by onsite), update racktables with result [] - switch port configration removed from asw-a-eqiad for scandium when it is unracked.