Jerry Yang's Bloghttps://blog.yangjerry.tw/en/Recent content on Jerry Yang's BlogHugo -- gohugo.ioenyouremail@example.com (ChengHao Yang)youremail@example.com (ChengHao Yang)© 2018–2025 ChengHao Yang. Unless otherwise stated, all articles are licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)Sun, 28 Jun 2026 00:00:00 +0800KEP-555 Reading Notes: The Design Principles and Context of Server Side Applyhttps://blog.yangjerry.tw/en/posts/k8s-ssa-design/Sat, 27 Jun 2026 00:00:00 +0800youremail@example.com (ChengHao Yang)https://blog.yangjerry.tw/en/posts/k8s-ssa-design/Server Side Apply (SSA) has been GA since Kubernetes v1.22 (August 2021), and the Kubernetes blog even published a post encouraging everyone to adopt it.

In October 2022, Argo CD v2.5.0 announced SSA support. In November 2025, Helm 4.0.0 was released with SSA enabled by default for new releases. So what exactly is “SSA”?

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]]>Understanding dynamic resource allocation in Kuberneteshttps://blog.yangjerry.tw/en/posts/dra-nvidia-gpu-overview/Sun, 10 May 2026 12:56:48 +0800youremail@example.com (ChengHao Yang)https://blog.yangjerry.tw/en/posts/dra-nvidia-gpu-overview/Dynamic Resource Allocation (DRA) recently reached GA in Kubernetes v1.35, and I believe many of us are eager to give it a try. Adding to the momentum, NVIDIA has moved dra-driver-nvidia-gpu into Kubernetes SIGs, with the documentation dropping the Beta label — a sign that the technology and its standards are gradually maturing.

For this post, I borrowed all the NVIDIA GPUs currently available at CNTUG Infra Labs to learn how to elegantly allocate devices and resources with DRA.

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]]>ExternalIPs Deprecated? From Design to Vulnerability to KEP-5707https://blog.yangjerry.tw/en/posts/externalips-deprecated/Sat, 18 Apr 2026 21:37:40 +0800youremail@example.com (ChengHao Yang)https://blog.yangjerry.tw/en/posts/externalips-deprecated/ExternalIPs has been part of Kubernetes Service since v1.0. After 11 years, SIG Network has decided to deprecate it starting from v1.36, with plans to lock the feature after v1.43. What happened?

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]]>2025 Year in Reviewhttps://blog.yangjerry.tw/en/posts/2025-recap/Mon, 06 Apr 2026 22:36:43 +0800youremail@example.com (ChengHao Yang)https://blog.yangjerry.tw/en/posts/2025-recap/I originally planned to finish my 2025 year-in-review before the Lunar New Year, but ended up writing it two months after.

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]]>What is KYAML? KEP-5295 Reading Noteshttps://blog.yangjerry.tw/en/posts/kyaml-introduction/Thu, 31 Jul 2025 21:20:15 +0800youremail@example.com (ChengHao Yang)https://blog.yangjerry.tw/en/posts/kyaml-introduction/While carrying out some routine Release Signal tasks recently, I stumbled upon a PR titled KYAML. Is the Kubernetes community trying to create another YAML standard? Or is there something special about it?

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]]>Kubernetes Conformance Test - Sonobuoyhttps://blog.yangjerry.tw/en/posts/k8s-conformance-sonobuoy/Wed, 11 Sep 2024 00:12:15 +0800youremail@example.com (ChengHao Yang)https://blog.yangjerry.tw/en/posts/k8s-conformance-sonobuoy/Numerous Kubernetes distributions (e.g., k0s, K3s, Rancher, etc.) and cloud services offering Kubernetes (e.g., GKE, AKS, EKS) are available today. But have you ever wondered why these communities or cloud providers claim to provide Kubernetes? Could I also claim to offer Kubernetes?

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]]>LFX Mentorship - Kubespray mentee reflection - From user to contributor to reviewerhttps://blog.yangjerry.tw/en/posts/lfx-mentorship-kubespray/Mon, 09 Sep 2024 01:40:00 +0800youremail@example.com (ChengHao Yang)https://blog.yangjerry.tw/en/posts/lfx-mentorship-kubespray/I quickly searched on Google for LFX Mentorship-related posts, and it seems no one from Taiwan has written an internship reflection yet. I’ll be the first to lead the way and write the first one!

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