History

k8s-ci-robot 7fe59165b6 Merge pull request #70193 from saad-ali/csiCRDAddon Register CSI CRDs as addon		2018-11-06 23:55:56 -08:00
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addon-manager	Merge pull request #68082 from aldarionsevero/master	2018-10-23 21:22:23 -07:00
calico-policy-controller	Add serviceaccounts permission for ClusterRole, required by Calico v3.2.0+.	2018-09-14 15:44:07 -07:00
cluster-loadbalancing	Update OWNERS files for GCE-related components	2018-10-03 10:52:43 -07:00
cluster-monitoring	Update heapster eventer addon-resizer to 1.8.3	2018-10-15 10:47:25 -07:00
dashboard	update dashboard version	2018-09-09 21:13:00 -04:00
device-plugins/nvidia-gpu	Update nvidia-gpu-device-plugin to apps/v1 and use RollingUpdate updateStrategy.	2018-05-24 17:53:13 -07:00
dns	make coredns kubeup default, update manifest	2018-10-18 14:52:38 -04:00
dns-horizontal-autoscaler	Bump cluster-proportional-autoscaler to 1.3.0	2018-10-02 11:48:51 -07:00
fluentd-elasticsearch	Merge pull request #70610 from zhihuiwu/min-master-nodes	2018-11-05 12:58:16 -08:00
fluentd-gcp	Add tolerations for Stackdriver Logging and Metadata Agents.	2018-10-12 11:15:33 -04:00
ip-masq-agent	Bump ip-masq-agent to v2.1.1	2018-08-27 16:30:04 -07:00
kube-proxy	Update OWNERS files for GCE-related components	2018-10-03 10:52:43 -07:00
metadata-agent	Add tolerations for Stackdriver Logging and Metadata Agents.	2018-10-12 11:15:33 -04:00
metadata-proxy	Bump versions of components with latest security patches.	2018-08-22 11:27:36 +02:00
metrics-server	Bump metrics-server to v0.3.1	2018-09-17 11:34:29 -04:00
node-problem-detector	`exec` away the shell for node-problem-detector	2018-03-09 16:07:30 -08:00
prometheus	Add kube-state-metrics nanny configuration	2018-10-15 10:46:19 -07:00
python-image	remove gcloud docker -- since it's deprecated	2018-02-28 00:24:27 -08:00
rbac	Grant permissions for batch/job to cluster-autoscaler	2018-10-16 10:46:46 +02:00
runtimeclass	Allow an empty "" runtimeHandler	2018-10-08 19:05:03 -07:00
storage-class	change default storage class annotation for all addons	2018-09-06 11:27:25 +02:00
storage-crds	Register CSI CRDs as addon	2018-11-06 10:58:09 -08:00
BUILD	Use the pkg_tar wrapper from kubernetes/repo-infra	2018-01-18 17:10:16 -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.