kube-stats-exporter

kube-stats-exporter is a Prometheus exporter that collects ephemeral storage metrics for Kubernetes pods by accessing the Kubelet’s Summary API. These metrics are not available on the Kubelet’s /metrics endpoint, as noted in kubernetes/kubernetes#69507.

Features

• Collects pod-level ephemeral storage metrics, including available, capacity, and used bytes.
• Exposes metrics in Prometheus format for easy integration.

Prerequisites

• Rust toolchain for building the exporter.
• Access to a Kubernetes cluster with appropriate permissions.

Installation

Clone the repository:

git clone https://github.com/phenomenes/kube-stats-exporter.git
cd kube-stats-exporter

Build the binary:

cargo build --release

Run the exporter:

kubectl proxy --port=8001
export API_HOST=127.0.0.1:8001
./target/release/kube-stats-exporter

Metrics

The exporter provides the following metrics:

• kube_pod_ephemeral_storage_available_bytes: Available ephemeral storage bytes per pod.
• kube_pod_ephemeral_storage_capacity_bytes: Total ephemeral storage capacity bytes per pod.
• kube_pod_ephemeral_storage_used_bytes: Used ephemeral storage bytes per pod.

Usage

After starting the exporter, metrics can be accessed at http://localhost:9100/metrics. Integrate this endpoint with your Prometheus server to begin scraping the metrics.

License

This project is licensed under the MIT License.