Contributed to the open-telemetry/semantic-conventions repository by expanding Kubernetes observability through the introduction of new node system container metrics. Developed and documented the k8s.node.system_container.* metrics, which capture CPU and memory usage for system containers running on Kubernetes nodes. This addition enables more granular monitoring, supporting improved capacity planning and alerting for infrastructure teams. The work involved careful adherence to repository standards, with updates made in both YAML and Markdown to ensure consistency and clarity. Leveraged expertise in Kubernetes, metrics design, and monitoring practices to enhance the repository’s coverage, focusing on maintainable code and comprehensive documentation for future contributors.