See parent and grand-parent tasks T426197: codfw: pod AB switches upgrade (2026)
This task is to schedule the software upgrade of rack A4 top of rack switch scheduled for Tuesday 2026-06-09 12:00 UTC with an expected network connectivity loss of ~30min
https://wikitech.wikimedia.org/wiki/Network_leaf_maintenance
No information available about depool
mc2055: Couldn't get or parse depool Hiera key (will be moved to another rack T427373) moved to A3
mc-gp2004: Couldn't get or parse depool Hiera key
dbprov2005: Couldn't get or parse depool Hiera key
backup2004: Couldn't get or parse depool Hiera key
Depool needed
cirrussearch2061: depool using local_command depool
cirrussearch2062: depool using local_command depool
cirrussearch2089: depool using local_command depool
cp2044: depool using local_command depool
db2183: skipping host (manual depool needed)
db2198: skipping host (manual depool needed)
db2199: skipping host (manual depool needed)
db2241: depool using cookbook sre.mysql.depool -r "rack depool" {name}
ganeti2027: depooled (ping Moritz when it's good to re-add)
ganeti2034: depooled (ping Moritz when it's good to re-add)
ganeti2045: depooled (ping Moritz when it's good to re-add)
ml-serve2005: depool using cookbook sre.k8s.pool-depool-node
aux-k8s-worker2006: depool using cookbook sre.k8s.pool-depool-node
wikikube-worker2251: depool using cookbook sre.k8s.pool-depool-node
wikikube-worker2252: depool using cookbook sre.k8s.pool-depool-node
wikikube-worker2253: depool using cookbook sre.k8s.pool-depool-node
No depool needed
ms-be2062: skipping host (Can't be depooled, need to go down one at a time with special care)
ms-be2066: skipping host (Can't be depooled, need to go down one at a time with special care)
ms-be2070: skipping host (Can't be depooled, need to go down one at a time with special care)
ms-be2075: skipping host (Can't be depooled, need to go down one at a time with special care)
logstash2033: skipping host (No cookbook, no depool needed but there's a switch we can flip to mitigate the churn caused when the cluster detects a down node)
Per team grouping
Infrastructure Foundations: aux-k8s-worker2006, ganeti2027, ganeti2034, ganeti2045 @MoritzMuehlenhoff
Data Persistence: backup2004, db2183, db2198, db2199, db2241, dbprov2005, ms-be2062, ms-be2066, ms-be2070, ms-be2075 @jcrespo @FCeratto-WMF @MatthewVernon
Search Platform: cirrussearch2061, cirrussearch2062, cirrussearch2089 Discovery-Search
Traffic: cp2044 Traffic
Observability: logstash2033 Observability-Logging
ServiceOps: mc2055, mc-gp2004, wikikube-worker2251, wikikube-worker2252, wikikube-worker2253 ServiceOps new
Machine Learning: ml-serve2005 Machine-Learning-Team