Custom Metrics Adpater Server Boilerplate

Purpose

This repository contains boilerplate code for setting up an implementation of the custom metrics API (https://github.com/kubernetes/metrics).

It includes the necessary boilerplate for setting up an implementation (generic API server setup, registration of resources, etc), plus a sample implementation backed by fake data.

How to use this repository

In order to use this repository, you should vendor this repository at k8s.io/custom-metrics-boilerplate, and implement the "k8s.io/custom-metrics-boilerplate/pkg/provider".CustomMetricsProvider interface. You can then pass this to the main setup functions.

The pkg/cmd package contains the building blocks of the actual API server setup. You'll most likely want to wrap the existing options and flags setup to add your own flags for configuring your provider.

A sample implementation of this can be found in the file sample-main.go and pkg/sample-cmd directory. You'll want to have the equivalent files in your project.

A note on Godeps

The vendored directory currently contains a copy of k8s.io/apiserver with a special patch applied to support the dynamic nature of the custom metrics API server (kubernetes/kubernetes#42845). Until this functionality lands in the main k8s.io/apiserver repository, you should use the vendored copy here.

Compatibility

The APIs in this repository follow the standard guarantees for Kubernetes APIs, and will follow Kubernetes releases.

Community, discussion, contribution, and support

Learn how to engage with the Kubernetes community on the community page.

You can reach the maintainers of this repository at:

• Slack: #sig-instrumention (on https://kubernetes.slack.com -- get an invite at slack.kubernetes.io)
• Mailing List: https://groups.google.com/forum/#!forum/kubernetes-sig-instrumentation

Code of Conduct

Participation in the Kubernetes community is governed by the Kubernetes Code of Conduct.

Contibution Guidelines

See CONTRIBUTING.md for more information.