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Go Report Card Build Status Docker Repository on Quay Active PR's Welcome License

Calico Route Reflector Operator

Use your own risk !!!

Proposal documentation found here: https://github.com/mhmxs/calico-route-reflector-operator-proposal. Please feel free to share your ideas !!!

Prerequisites

  • Kubernetes cluster up and running
  • Calico network on Kubernetes data store a.k.a. KDD.
  • Configured Calico BGPPeers one for route reflector mesh and an other for clients. More info

This Kubernetes operator can monitor and scale Calico route refloctor pods based on node number per zone. The operator owns a few environment variables:

  • ROUTE_REFLECTOR_CLUSTER_ID Route reflector cluster ID, default 224.0.0.1
  • ROUTE_REFLECTOR_MIN Minimum number of route reflector pods per zone, default 3
  • ROUTE_REFLECTOR_MAX Maximum number of route reflector pods per zone, default 25
  • ROUTE_REFLECTOR_RATIO Node / route reflector pod ratio, default 0.005 (1000 * 0.005 = 5)
  • ROUTE_REFLECTOR_NODE_LABEL Node label of the route reflector nodes, default calico-route-reflector=
  • ROUTE_REFLECTOR_ZONE_LABEL Node label of the zone, default ``

During the api/core/v1/Node reconcile phases it calculates the right number of route refloctor nodes per zone. It supports linear scaling only and it multiplies the number of nodes with the given ratio and than updates the route reflector replicas to the expected number.

Usage

This is a standard Kubebuilder opertor so building and deploying process is similar as a (stock Kubebuilder project)[https://book.kubebuilder.io/cronjob-tutorial/running.html].

Use official image:

kustomize build config/crd | kubectl apply -f -
kustomize build config/default | kubectl apply -f -

Build your own image: IMG_REPO=[IMG_REPO] IMG_NAME=[IMG_NAME] IMG_VERSION=[IMG_VERSION] make test docker-push install deploy

Roadmap

  • Etcd data store support
  • Use custom resource instead of environment variables
  • Dedicated or preferred node label
  • Disallow node label
  • Handle taints and tolerations

Contributing

We appreciate your help!

To contribute, please read our contribution guidelines: CONTRIBUTION.md