ae940c09f3
Automatic merge from submit-queue Clean-up and fixes in federated replica set * Create and update consistent with other controllers. Previously an annotation update on federated rs would not trigger local rs update. * Use of federatedUpdater. The previous code use talked to clusters manually, assuming that the stats values in the local rs would be automatically and immediately updated. These stats are updated by controllers so they are not immediately updated and the currently existing stats can be used for building federated rs stats. * Trigger a rs recheck after some operations are executed. cc: @quinton-hoole @jianhuiz @wojtek-t @kubernetes/sig-cluster-federation
Cluster Federation
Kubernetes Cluster Federation enables users to federate multiple Kubernetes clusters. Please see the user guide and the admin guide for more details about setting up and using the Cluster Federation.
Building Kubernetes Cluster Federation
Please see the Kubernetes Development Guide
for initial setup. Once you have the development environment setup
as explained in that guide, you also need to install jq
Building cluster federation artifacts should be as simple as running:
make build
You can specify the docker registry to tag the image using the KUBE_REGISTRY environment variable. Please make sure that you use the same value in all the subsequent commands.
To push the built docker images to the registry, run:
make push
To initialize the deployment run:
(This pull the installer images)
make init
To deploy the clusters and install the federation components, edit the
${KUBE_ROOT}/_output/federation/config.json file to describe your
clusters and run:
make deploy
To turn down the federation components and tear down the clusters run:
make destroy
Ideas for improvement
-
Split the
buildphase (make recipe) into multiple phases:init: pull installer imagesbuild-binariesbuild-dockerbuild: build-binary + build-dockerpush: to push the built imagesgenconfigdeploy-clustersdeploy-federationdeploy: deploy-clusters + deploy-federationdestroy-federationdestroy-clustersdestroy: destroy-federation + destroy-clustersredeploy-federation: just redeploys the federation components.
-
Continue with
destroyphase even in the face of errors.The bash script sets
set -e errexitwhich causes the script to exit at the very first error. This should be the default mode for deploying components but not for destroying/cleanup.