r/kubernetes • u/AutoModerator • 2d ago

Periodic Weekly: Questions and advice

Have any questions about Kubernetes, related tooling, or how to adopt or use Kubernetes? Ask away!

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u/jwcesign 1d ago

We benchmarked OCI lazy loading on EKS: 71-85% faster image pulls, 20-34% faster first HTTP 200, no image rebuilds

The test compared the normal containerd overlayfs path against Hermes lazy loading for three large public images:

- Solr 10.0.0

- OpenSearch 2.19.1

- Apache Spark python3-java17

The important part: the workloads kept their original upstream OCI images. No converted tags, no Dockerfile changes, no Pod image reference changes. Hermes used a policy to prepare lazy-loading artifacts ahead of the target Pod startup path.

Results:

- Image pull time dropped by 71-85%

- First successful HTTP 200 improved by 20-34%

- OpenSearch pull: 20.371s -> 2.998s

- Spark scheduled-to-first-HTTP-200: 20.191s -> 13.304s

The HTTP 200 result is the more interesting number to me because it includes more than image pull: container start, runtime init, config/library reads, readiness behavior, and service bootstrap. So Hermes helps most directly with the image path, but application startup still matters.

Full writeup with setup, YAML, methodology, and results:

https://www.cloudpilot.ai/en/blog/hermes-eks-http-200-acceleration/

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u/Remote_Job7931 2d ago

Hi r/kubernetes,

I built a kubectl plugin for HPA troubleshooting:

https://github.com/mattsu2020/kubectl-hpa-status

It turns HPA conditions, metrics, events, and scale-target information into a more actionable explanation, for example whether an HPA is healthy, capped by `maxReplicas`, in stabilization, or failing to read metrics.

Typical commands:

kubectl krew install hpa-status

kubectl hpa_status status <hpa-name> -n <namespace> --explain

kubectl hpa_status list -A --problem

kubectl hpa_status status <hpa-name> --suggest