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@kubernetes @kubernetes-sigs @cloudnativebooks @karmada-io

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RainbowMango/README.md

Hi, I'm Hongcai Ren

I work on Kubernetes and multi-cluster orchestration, through open-source development, project maintenance, community leadership, speaking, and writing.

I'm a Karmada maintainer, a Tech Lead for CNCF TAG Workloads Foundation, and a CNCF Ambassador. My Kubernetes work includes approver responsibilities in SIG Instrumentation and SIG Multicluster.

Projects I'm currently maintaining

These are the projects and components I actively maintain today, spanning multi-cluster APIs and orchestration, Kubernetes instrumentation, cloud-provider integrations, and sandbox runtimes.

Area Project or component Role
Multi-cluster orchestration Karmada Maintainer
Kubernetes Kubernetes Approver
Kubernetes SIG-Multicluster Cluster Inventory API Approver
Kubernetes SIG-Multicluster Work API Approver
Kubernetes SIG-Instrumentation Custom Metrics API Server Approver
Kubernetes SIG-Instrumentation Metrics Server Reviewer
Cloud integrations Huawei Cloud Provider Approver
Autoscaling Cluster Autoscaler: Huawei Cloud provider Approver
Sandbox runtimes AgentCube Approver

Community & conference service

Selected talks

I speak about multi-cluster systems, Kubernetes APIs, and instrumentation. The links below include both individual and joint sessions on the CNCF channel.

Topic Recording
Karmada and AI workloads Karmada in Action: Scaling AI Workloads…
Multi-cluster orchestration Karmada Updates and Use Cases
Kubernetes SIG Multicluster SIG-Multicluster Intro and Deep Dive
Kubernetes API design Design Conventions You Need to Know When Extending Kubernetes with CRDs
Kubernetes instrumentation Deep Dive: Kubernetes SIG Instrumentation

Find more recordings on the CNCF YouTube channel →

Writing

I'm the author of 《Go专家编程》, a Chinese-language book covering Go internals, standard-library implementation, tooling, and programming pitfalls.

Badges & recognition

Selected credentials from The Linux Foundation. Each badge links to its individual verification page.

CNCF Ambassador — H1 2024–2026 Track Chair — KubeCon + CloudNativeCon North America 2024 Program Committee Member — KubeCon + CloudNativeCon Europe 2025 Speaker — KubeCon + CloudNativeCon + OpenInfra Summit + Pytorch China 2026

View all badges and credential details on Credly →

How to reach me

Email: qdurenhongcai@gmail.com

Pinned Loading

  1. karmada karmada Public

    Forked from karmada-io/karmada

    Open, Multi-Cloud, Multi-Cluster Kubernetes Orchestration

    Go 2 2

  2. upstream-kubernetes upstream-kubernetes Public

    Forked from kubernetes/kubernetes

    Production-Grade Container Scheduling and Management

    Go 1

  3. cloud-provider-huaweicloud cloud-provider-huaweicloud Public

    Forked from kubernetes-sigs/cloud-provider-huaweicloud

    Kubernetes Cloud Provider for HUAWEI CLOUD

    Go

  4. go go Public

    Forked from golang/go

    The Go programming language

    Go 1 1

  5. GoExpertProgramming GoExpertProgramming Public

    《Go专家编程》Go语言快速入门,轻松进阶!

    Go 1.9k 304

  6. KubernetesDesign KubernetesDesign Public

    《Kubernetes设计与实现》Kubernetes一本通,涵盖特性、设计和实现。

    78 25