History

Joel Smith f55ebc6129 Fix link for resource metrics pipeline See https://github.com/kubernetes/website/pull/12934		2019-04-24 22:38:48 -06:00
..
addon-manager	Merge pull request #76404 from MrHohn/addon-manager-9.1	2019-04-15 18:05:36 -07:00
calico-policy-controller	Updated OWNERS files to include link to docs	2019-02-04 22:33:12 +01:00
cluster-loadbalancing	Update docs for Ingress-GCE related cluster addon	2019-02-18 13:17:01 -08:00
cluster-monitoring	Update gcp images with security patches	2019-03-15 09:24:32 +01:00
dashboard	Updated OWNERS files to include link to docs	2019-02-04 22:33:12 +01:00
device-plugins/nvidia-gpu	Update nvidia-gpu-device-plugin addon.	2019-02-11 15:52:33 -08:00
dns	Merge pull request #76238 from Dieken/30s-ttl-for-coredns	2019-04-23 06:20:09 -07:00
dns-horizontal-autoscaler	Updated OWNERS files to include link to docs	2019-02-04 22:33:12 +01:00
fluentd-elasticsearch	remove internal client references in cluster/*	2019-04-09 21:43:54 +08:00
fluentd-gcp	Update gcp images with security patches	2019-03-15 09:24:32 +01:00
ip-masq-agent	Prepare switch from beta.kubernetes.io/masq-agent-ds-ready to node.kubernetes.io/masq-agent-ds-ready	2019-02-26 11:43:10 -05:00
kube-proxy	Prepare switch from beta.kubernetes.io/kube-proxy-ds-ready to node.kubernetes.io/kube-proxy-ds-ready	2019-02-26 11:42:23 -05:00
metadata-agent	delete all duplicate empty blanks	2019-02-23 10:28:04 +08:00
metadata-proxy	Update gcp images with security patches	2019-03-15 09:24:32 +01:00
metrics-server	Fix link for resource metrics pipeline	2019-04-24 22:38:48 -06:00
node-problem-detector	Use Node-Problem-Detector v0.6.3 on GCI	2019-04-05 11:08:24 -07:00
prometheus	delete all duplicate empty blanks	2019-02-23 10:28:04 +08:00
rbac	Grant permissions for batch/job to cluster-autoscaler	2018-10-16 10:46:46 +02:00
storage-class	change default storage class annotation for all addons	2018-09-06 11:27:25 +02:00
BUILD	Update repo-infra, bazel-skylib, rules_docker, and rules_go dependencies	2019-02-12 17:55:10 -08:00
README.md	Updated cluster/addons readme to match and point to docs	2017-10-18 10:36:24 -04:00

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.