Author: haopengzhan

  • Kubernetes: Two Years In, Myths, and the Complexity Conundrum

    Kubernetes: Two Years In, Myths, and the Complexity Conundrum

    It’s been two years since I stepped into the Kubernetes world, and during that time, I’ve been labeled the “Kubernetes Engineer” among friends. It’s no surprise that people either have zero knowledge about K8s or simply recognize the name, usually followed by “that overly complex system.” As I hit this two-year milestone, I wanted to…

  • Use iOS shortcut scripts to summarize link with LLM

    Use iOS shortcut scripts to summarize link with LLM

    Minimalism is the art of knowing how much is just enough. Digital minimalism applies this idea to our personal technology. It’s the key to living a focused life in an increasingly noisy world. Cal Newport. Digital Minimalism What’s the most valuable idea if we have truly advanced AI technology? I bet personalized assistants will be…

  • How do we know if Kubelet leaks Inotify watchers

    How do we know if Kubelet leaks Inotify watchers

    Kubelet as the node agent of Kubernetes OSS, always needs to monitor paths. Using Inotify to do so, Kubelet exposes to possibility of leaking of Inotify watchers. In recent, I observed a case where the Kubelet was hung for enormous Inotify usage. This Post briefly discussed how I debug the process and locate the problem.…

  • Practical debugging methods for Kubelet

    Practical debugging methods for Kubelet

    Kubelet, a vital component in Kubernetes, runs on each node in your cluster. It acts as the field manager, receiving instructions from the Kubernetes API server and ensuring containerized applications run smoothly. Kubelet is responsible for downloading container images, pulling secrets, and launching pods – the basic units containing your application containers. It also monitors…

  • Selected Labs for CS350 courses in Binghamton University

    Selected Labs for CS350 courses in Binghamton University

    TL; DR. This will be a series regarding labs I gave during the spring 2022 semester. The reason why I am writing this down is that it has been a week and no students have asked for the solution for the last Lab. I realize that the learning gap between students is huge, especially when…