122 lines
8.2 KiB
Markdown
122 lines
8.2 KiB
Markdown
# 2023 Annual Report: SIG Node
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## Current initiatives and Project Health
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1. What work did the SIG do this year that should be highlighted?
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As accelerator workloads importance grows, SIG Node **doubled down on DRA**
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related work. There were a few changes proposed and many improvements started in
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2023 will be continued in 2024.
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SIG Node started many alpha-level features in 2023. Specifically, **SIG Node
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green-lit two major features that touch Pod Lifecycle** that used to be hard to
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change in the past. InPlace pod update is still in alpha. Sidecar containers
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reached beta stage and were enabled by default in 1.29. Note that sidecar
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containers' importance is also partially driven by AI/ML training workloads that
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highly depend on reliable sidecar containers support in Kubernetes.
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Group is also continuing the effort of **eliminating perma-betas**. A few old beta
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features were GA-d and there are plans to continue this effort in 2024.
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2. Are there any areas and/or subprojects that your group needs help with (e.g. fewer than 2 active OWNERS)?
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SIG Node delivers the highest number of KEPs in many releases despite the fact
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that SIG Node is heavily bottlenecked on the number of approvers. Approvers are
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overloaded, which creates community tension around KEPs which cannot get enough
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attention. This is true for global approvers, as well as subprojects like NPD.
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SIG Node codebase is hard to split into individual components, which makes the
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growing of new approvers harder.
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Even with the push for perma beta elimination, SIG Node still has many features
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that are heavily used in production, but still marked as beta. Most of the time,
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the work needed is not challenging or complicated, but requires a lot of effort.
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Help in this area will be very appreciated.
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3. Did you have community-wide updates in 2023 (e.g. KubeCon talks)?
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- KubeCon EU 2023 [maintainers track](https://kccnceu2023.sched.com/event/1HyU4/kubernetes-sig-node-intro-and-deep-dive-sergey-kanzhelev-dawn-chen-google-derek-carr-mrunal-patel-red-hat)
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- KubeCon China 2023 [maintainers track](https://kccncosschn2023.sched.com/event/1PTJk/kubernetes-sigze-tao-recheng-kubernetes-sig-node-intro-and-deep-dive-paco-xu-daocloud-xiongxiong-yuan-gitlab-china)
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- KubeCon NA 2023 [maintainers track](https://kccncna2023.sched.com/event/1R2qd/kubernetes-sig-node-intro-and-deep-dive-sergey-kanzhelev-google-mrunal-patel-red-hat)
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4. KEP work in 2023 (v1.27, v1.28, v1.29):
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- Alpha
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- [1287 - In-place Update of Pod Resources](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/1287-in-place-update-pod-resources) - v1.27
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- [2371 - cAdvisor-less, CRI-full Container and Pod Stats](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/2371-cri-pod-container-stats) - v1.29
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- [2570 - Memory QoS](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/2570-memory-qos) - v1.27
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- [3673 - KEP Template](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/3673-kubelet-parallel-image-pull-limit) - v1.27
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- [3695 - Extend the PodResources API to include resources allocated by DRA](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/3695-pod-resources-for-dra) - v1.27
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- [3960 - Pod lifecycle sleep action](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/3960-pod-lifecycle-sleep-action) - v1.29
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- [3983 - Add support for a kubelet drop-in configuration directory](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/3983-drop-in-configuration) - v1.28
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- [4033 - Discover cgroup driver from CRI](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/4033-group-driver-detection-over-cri) - v1.28
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- [4191 - Splitting the Image Filesystem](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/4191-split-image-filesystem) - v1.29
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- [4210 - ImageMaximumGCAge in Kubelet](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/4210-max-image-gc-age) - v1.29
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- [4216 - Image pull per runtime class](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/4216-image-pull-per-runtime-class) - v1.29
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- Beta
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- [1029 - Quotas for Ephemeral Storage](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/1029-ephemeral-storage-quotas) - 1.29
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- [3085 - Pod networking ready condition](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/3085-pod-conditions-for-starting-completition-of-sandbox-creation) - v1.29
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- [3386 - Kubelet Evented PLEG for Better Performance](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/3386-kubelet-evented-pleg) - v1.27
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- [3545 - Improved multi-numa alignment in Topology Manager](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/3545-improved-multi-numa-alignment) - v1.28
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- [4009 - Add CDI devices to device plugin API](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/4009-add-cdi-devices-to-device-plugin-api) - v1.29
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- [753 - Sidecar Containers](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/753-sidecar-containers) - v1.29
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- Stable
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- [2053 - Downward API HugePages](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/2053-downward-api-hugepages) - v1.27
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- [2238 - Liveness Probe Grace Period](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/2238-liveness-probe-grace-period) - v1.28
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- [2403 - Extend kubelet pod resource assignment endpoint to return allocatable resources](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/2403-pod-resources-allocatable-resources) - v1.28
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- [2413 - Seccomp by default](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/2413-seccomp-by-default) - v1.27
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- [2727 - Add gRPC probe to Pod.Spec.Container.{Liveness,Readiness,Startup}Probe](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/2727-grpc-probe) - v1.27
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- [3288 - Split Stdout and Stderr Log Stream of Container](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/3288-separate-stdout-from-stderr) - v1.27
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- [3327 - CPUManager policy option to align CPUs by Socket instead of by NUMA node](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/3327-align-by-socket) - v1.28
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- [606 - Kubelet endpoint for device assignment observation details](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/606-compute-device-assignment) - v1.28
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- [693 - Node Topology Manager](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/693-topology-manager) - v1.27
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- [727 - Kubelet Resource Metrics Endpoint](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/727-resource-metrics-endpoint) - v1.29
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## [Subprojects](https://git.k8s.io/community/sig-node#subprojects)
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**New in 2023:**
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- [resource-management](https://git.k8s.io/community/sig-node#resource-management)
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**Retired in 2023:**
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- noderesourcetopology-api
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**Continuing:**
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- ci-testing
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- cri-api
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- cri-tools
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- kernel-module-management
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- kubelet
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- node-api
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- node-feature-discovery
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- node-problem-detector
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- security-profiles-operator
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## [Working groups](https://git.k8s.io/community/sig-node#working-groups)
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**Retired in 2023:**
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- Multitenancy
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**Continuing:**
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- Batch
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- Policy
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- Structured Logging
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## Operational
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Operational tasks in [sig-governance.md]:
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- [X] [README.md] reviewed for accuracy and updated if needed
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- [X] [CONTRIBUTING.md] reviewed for accuracy and updated if needed
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- [X] Other contributing docs (e.g. in devel dir or contributor guide) reviewed for accuracy and updated if needed
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- [X] Subprojects list and linked OWNERS files in [sigs.yaml] reviewed for accuracy and updated if needed
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- [X] SIG leaders (chairs, tech leads, and subproject leads) in [sigs.yaml] are accurate and active, and updated if needed
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- [X] Meeting notes and recordings for 2023 are linked from [README.md] and updated/uploaded if needed
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[CONTRIBUTING.md]: https://git.k8s.io/community/sig-node/CONTRIBUTING.md
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[sig-governance.md]: https://git.k8s.io/community/committee-steering/governance/sig-governance.md
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[README.md]: https://git.k8s.io/community/sig-node/README.md
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[sigs.yaml]: https://git.k8s.io/community/sigs.yaml
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[devel]: https://git.k8s.io/community/contributors/devel/README.md
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