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k8s-ci-robot Merge pull request #88175 from yliaog/windep
added nodeSelector to constrain it to Linux only
Latest commit c8814fd Feb 23, 2020

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addon-manager Addon Manager: Fix parsing KUBECTL_EXTRA_PRUNE_WHITELIST Nov 18, 2019
calico-policy-controller Merge pull request #84163 from david-tigera/update-calico-v3.8.4 Jan 9, 2020
cluster-loadbalancing The default-http-backend for handling 404 pages will now point to 404… Jun 17, 2019
dashboard Replace Beta OS/arch labels with the GA ones Feb 13, 2020
device-plugins/nvidia-gpu feat: cleanup pod critical pod annotations feature Aug 9, 2019
dns-horizontal-autoscaler Replace Beta OS/arch labels with the GA ones Feb 13, 2020
dns Replace Beta OS/arch labels with the GA ones Feb 13, 2020
fluentd-elasticsearch generated: run refactor Feb 8, 2020
fluentd-gcp Replace Beta OS/arch labels with the GA ones Feb 13, 2020
ip-masq-agent added nodeSelector to constrain it to Linux only Feb 14, 2020
kube-proxy Replace Beta OS/arch labels with the GA ones Feb 13, 2020
metadata-agent Merge pull request #83363 from wawa0210/zx-metadata-agent Dec 9, 2019
metadata-proxy Replace Beta OS/arch labels with the GA ones Feb 13, 2020
metrics-server Merge pull request #86065 from serathius/metrics-server-owners Dec 9, 2019
node-problem-detector let standalone npd use kubelet credentials Nov 8, 2019
rbac Update addon permissions Dec 13, 2019
storage-class Merge pull request #75638 from ramnar/bugfix_24thMarch Jun 20, 2019
volumesnapshots VolumeSnapshot CRD v1beta1: Enable VolumeSnapshotDataSource feature g… Nov 11, 2019
BUILD Update repo-infra, bazel-skylib, rules_docker, and rules_go dependencies Feb 13, 2019
README.md Updated cluster/addons readme to match and point to docs Oct 18, 2017

README.md

Legacy Cluster add-ons

For more information on add-ons see the documentation.

Overview

Cluster add-ons are resources like Services and Deployments (with pods) that are shipped with the Kubernetes binaries and are considered an inherent part of the Kubernetes clusters.

There are currently two classes of add-ons:

  • Add-ons that will be reconciled.
  • Add-ons that will be created if they don't exist.

More details could be found in addon-manager/README.md.

Cooperating Horizontal / Vertical Auto-Scaling with "reconcile class addons"

"Reconcile" class addons will be periodically reconciled to the original state given by the initial config. In order to make Horizontal / Vertical Auto-scaling functional, the related fields in config should be left unset. More specifically, leave replicas in ReplicationController / Deployment / ReplicaSet unset for Horizontal Scaling, leave resources for container unset for Vertical Scaling. The periodic reconcile won't clobbered these fields, hence they could be managed by Horizontal / Vertical Auto-scaler.

Add-on naming

The suggested naming for most of the resources is <basename> (with no version number). Though resources like Pod, ReplicationController and DaemonSet are exceptional. It would be hard to update Pod because many fields in Pod are immutable. For ReplicationController and DaemonSet, in-place update may not trigger the underlying pods to be re-created. You probably need to change their names during update to trigger a complete deletion and creation.

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