Cgroups V2: Before You Jump In

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" summary

Adobe enables Flatcar 2969.0.0 and finds cgroups v2 breaks telemetry (metrics missing, HPA stops) and causes Java/runtime issues so clusters had to be rolled back, then fixed by making kubelet and runtime aware and updating cAdvisor. Requirements and fixes: kernel 5.8+, kubernetes 1.25 (stable), cAdvisor >= 0.44 (0.55 recommended), systemd for kubelet and runtime, language/runtime patches (Go auto‑max‑procs, JDK >=11.0.16 or >=15), test separate node pools and expect memory QoS, PSI metrics and future container‑aware OOM behavior.

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" chapters (10)

1. 0:00Introduction
2. 2:15Investigating cgroups V2
3. 5:42What are cgroups
4. 8:10Key changes in V2
5. 13:50Kubernetes timeline for V2
6. 15:57What V2 means for you
7. 20:30Preparing cluster for V2
8. 22:38Preparing apps for V2
9. 24:22Demo: V2 impact on Go apps
10. 27:09Key takeaways and closing

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