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prometheus.Handler is deprecated according to the godoc for the package so instead we're using promhttp. Additionally, we are exposing the Registry that metrics is using so other plugins that are not inside of coredns can read the registry. Otherwise, if we kept using the Default one, there's no way to access that from outside of the coredns repo since it is vendored.
client-go Examples
This directory contains examples that cover various use cases and functionality for client-go.
Configuration
- Authenticate in cluster: Configure a client while running inside the Kubernetes cluster.
- Authenticate out of cluster: Configure a client to access a Kubernetes cluster from outside.
Basics
- Managing resources with API: Create, get, update, delete a Deployment resource.
Advanced Concepts
- Work queues: Create a hotloop-free controller with the rate-limited workqueue and the informer framework.
- Third-party resources (deprecated): Register a third-party resource type with the API, create/update/query this third-party type, and write a controller that drives the cluster state based on the changes to the third-party resources.
- Custom Resource Definition (successor of TPR): Register a custom resource type with the API, create/update/query this custom type, and write a controller that drives the cluster state based on the changes to the custom resources.