The new KYAML subset just for K8s relieves the need to count white spaces and solves the age-old "Norway" issue.

The New Stack is a publication covering trends and technologies in cloud-native development, DevOps, and software delivery. Developers can learn about containerization, Kubernetes, and cloud computing, as well as explore topics such as microservices architecture, serverless computing, and continuous integration/continuous delivery (CI/CD) pipelines.

The New Stack

Kubernetes 1.34 introduces KYAML, a strict subset of YAML designed specifically for Kubernetes that addresses common YAML frustrations. KYAML eliminates whitespace sensitivity, resolves the "Norway Problem" with consistent quoting, uses JSON-like syntax with braces and brackets, while maintaining YAML compatibility and supporting comments and trailing commas. The format can be used with kubectl using the `-o kyaml` flag and works with existing manifests and Helm charts without additional configuration.

Kubernetes Is Getting a Better YAML

Damn, was about time. I’ve struggled with YAML difficulties in Kubernetes and specifically Helm forever…

Although, now looking at it and seeing the actual syntax, it’s really not great. It is basically like all the YAML alternatives, like Jsonnet, HJSON, etc… So, one could’ve picked an existing standard. The only reason they did not do it, as far as I can see, is that KYAML is 100% compatible with standard YAML, as it is a strict subset of it, without any extra-features.
So, instead of going all the way to something better, they introduced a middle-ground between not breaking existing setups and yet improving the current configuration model.