v1.4.0

[gardener-extensions]

Action Required

• [DEVELOPER] Extension controllers having a controlplanebackup webhook that was injecting the backup-restore sidecar into the etcd statefulset should remove the webhook as it is managed by the etcd-druid now. The controlplaneexposure webhook is still responsible for injecting the volume claim templates, however, no longer for StatefulSet but for the new Etcd resource. See also: gardener/gardener#1762 (#603, @georgekuruvillak)

Most notable changes

• [DEVELOPER] Removed unnecessary install command from Makefile (#591, @plkokanov)

Improvements

• [OPERATOR] Use internal Gardener secret for health checks. (#602, @zanetworker)
• [DEVELOPER] You can now pass an IP address to --webhook-config-url and the extensions library will generate a webhook certificate containing a matching IP address SAN. This can be used to run an extension webhook on your host machine and accessing it from your local cluster via an IP address. (#601, @tim-ebert)
• [DEVELOPER] hack/generate-controller-registration.sh now generates ControllerRegistrations in version v1beta1. Please regenerate the ControllerRegistrations of your extensions. (#596, @tim-ebert)