cluster-identity-controller

README

cluster-identiy-controller

A k8s operator which finds the cluster identity and writes the information to a configmap

Short introduction

This operator is made to find the cluster identity and write that information into a configmap so that services that depend on that information has it available.

How it works

The operator monitors all namespaces in the cluster it is installed into and looks for the annotation config.lunar.tech/cluster-identity-inject: "true". For those namespaces, if the operator can identify what cluster it is running in, it will create and manage a configmap called cluster-identity.

Supported Clusters

The operators has a list of strategies which are tried, one at a time. If one strategy it successful, then it is used to populate the configmap.

Currently, the following strategies are supported:

• coreDNSClusterNameStrategy: Checks the core DNS autoscaler pod environment variable: KUBERNETES_PORT_443_TCP_ADDR
• kubeControllerStrategy: Checks the kube controller pod definition.
• nodeLabelStrategy: Check nodes for a clusterName label

Releasing

Releases are automated via Release Drafter. Commits to the default branch are automatically picked up and added the a draft release. When ready, publish the draft release.