Cluster Addon Bootstrapper

Fork of https://github.com/kubernetes-sigs/cluster-addons - bootstrapper

cluster-addons-bootstrap manages two classes of addons with given template files in $ADDON_PATH (default /etc/kubernetes/addons/).

• Addons with label addonmanager.kubernetes.io/mode=Reconcile will be periodically reconciled. Direct manipulation to these addons through apiserver is discouraged because addon-manager will bring them back to the original state. In particular:
  • Addon will be re-created if it is deleted.
  • Addon will be reconfigured to the state given by the supplied fields in the template file periodically.
  • Addon will be deleted when its manifest file is deleted from the $ADDON_PATH.
• Addons with label addonmanager.kubernetes.io/mode=EnsureExists will be checked for existence only. Users can edit these addons as they want. In particular:
  • Addon will only be created/re-created with the given template file when there is no instance of the resource with that name.
  • Addon will not be deleted when the manifest file is deleted from the $ADDON_PATH.

Notes:

• Label kubernetes.io/cluster-service=true is deprecated (for this utility). In a future release,cluster-addons-bootstrap may not respect it anymore. Addons have this label but without addonmanager.kubernetes.io/mode=EnsureExists will be treated as "reconcile class addons" for now.
• Resources under $ADDON_PATH need to have either one of these two labels. Otherwise it will be omitted.