Tracking issue for v1beta1 related tasks.

1.12 planning doc:
https://docs.google.com/document/d/1YP8sCtgo58yqQ9sR4nsn9iuVFmglCCBMivCTwjd1ERE/edit#

• Write a KEP for the v1beta1 config API
  @fabriziopandini @luxas
  Kubeadm configfile beta community#2451
  Based on gdocs proposal draft here: https://docs.google.com/document/d/1Sk2VW7IKaLjrjf_4a1NEU0l7X0ysZoXq9lVBvH-ruYY/edit#heading=h.jt5lxzh770he
  related: Create a v1beta1 version for kubeadm config API types #911

• Remove v1alpha1
  @luxas
  kubeadm: Remove the v1alpha1 API  kubernetes#65628 and kubeadm: Stop using/supporting the v1alpha1 Config API kubernetes#65776

• Create new v1alpha3 API
  @luxas
  We will rename to v1beta1 at the end of the v1.12 cycle if we’re confident in it
  kubeadm: Add a v1alpha3 API kubernetes#65629

• Move ComponentConfigs out to different YAML documents

  • Add support for kubeadm reading multiple YAML documents
    @luxas
    kubeadm: Add support for reading multiple YAML documents kubernetes#65631
  • Start using internal versions for ComponentConfigs in the internal API
    @luxas
    kubeadm: Start using internal versions for ComponentConfigs in the internal API kubernetes#65940
  • Use separate YAML docs for the kubelet and kube-proxy ComponentConfigs
    @luxas
    kubeadm: Use separate YAML docs for the kubelet and kube-proxy ComponentConfigs kubernetes#65787
  • Add support for kubeadm config print-defaults --componentConfig
    Add support for kubeadm config print-defaults --api-objects {componentConfig}  #1126
  • Change authoritative source for component config
    Don't upload the extra ComponentConfig YAML documents to the cluster configmap and on upgrade, fetch the components' ConfigMaps back
    @fabriziopandini
    Kubeadm upload and fetch of kubeam config v1alpha3 kubernetes#67944

• Split cluster specification from runtime variables

  • MasterConfiguration to InitConfiguration
    @luxas
    Rename MasterConfiguration to InitConfiguration in the kubeadm v1alpha3 Config API kubernetes#65945
  • NodeConfiguration to JoinConfiguration
    @luxas >> @fabriziopandini
    Rename NodeConfiguration to JoinConfiguration in the kubeadm v1alpha3 Config API kubernetes#65951
  • Make the kubeadm config kinds mutually exclusive
    @luxas >> @fabriziopandini
    kubeadm: Make the kubeadm config kinds mutually exclusive kubernetes#65952
  • Cleanup util/config/*; filename and methods should be updated to use new names
    Cleanup util/config packages; filenames and methods should be updated to use new names #1125
  • Split InitConfiguration and ClusterConfiguration
    and Don't upload the extra InitConfiguration to the cluster configmap
    @luxas
    kubeadm: Split out ClusterConfiguration from InitConfiguration kubernetes#66219 (HOLD)
    @rosti
    [reissue] kubeadm: Split out ClusterConfiguration from InitConfiguration kubernetes#67441
    kubeadm: use ClusterConfiguration in images.go kubernetes#67503
    further cleanups --> ISSUE Narrow down the usage of InitConfiguration throughout the code base #1084

• Improve node/kubelet configuration by using substructs
  Already done in v1alpha2

  • Change authoritative source for node/kubelet by reading nodeName/cri info etc from the node when necessary (e.g. update, reset)
    @fabriziopandini
    Kubeadm upload and fetch of kubeam config v1alpha3 kubernetes#67944

• Improve controlplane configuration by using substructs

• Improve Etcd configuration by using substructs
  Already done in v1alpha2

• Improve bootstrap token configuration by using substructs
  Already done in v1alpha2

• Introduce support for clusters with n>1 controlplane instances
  @fabriziopandini
  kubeadm config move ControlPlaneEndpoint to ClusterConfiguration kubernetes#67830
  kubeadm config add support for more than one APIEndpoint kubernetes#67832

• Addons configuration
  relevant issues:

  • Improvements to the handling of cluster addons Improvements to the handling of cluster addons #1091
  • Allow overriding CoreDNS image Allow overriding CoreDNS image tag in kubeadm configuration #1017
  • Make the kube-proxy ComponentConfig v1beta1 Make the kube-proxy ComponentConfig v1beta1 #967

• Refactor the Discovery joining API types

• Rationalize with Cluster API

• Make flags override config values e.g. - NodeName override.
  relevant issues:

  • Develop a unified policy for command like flags vs config file options Develop a unified policy for command like flags vs config file options #1040

• etcd HA capabilities

  • Introduce a StackedEtcd type
    Automate stacked etcd into kubeadm join --control-plane workflow #1123

• Nix self hosting.
  relevant issues:

  • Remove (or deprecate) --feature-gates=HighAvailability, SelfHosting, CertsInSecrets Remove (or deprecate) --feature-gates=HighAvailability, SelfHosting, CertsInSecrets #1058
    kubeadm - deprecate feature-gates HighAvailability, SelfHosting, CertsInSecrets kubernetes#67786
    Cleanup code for feature-gates HighAvailability, SelfHosting, CertsInSecrets  #1072

• The BootstrapTokenString object should move out to either k8s.io/client-go or k8s.io/api
  relevant issues:

  • Moved staging/src/k8s.io/client-go/tools/bootstrap to staging/src/k8s… kubernetes#67356