The selected key type is defined by kubeadm's --feature-gates option:
if it contains PublicKeysECDSA=true then ECDSA keys will be generated
and used.
By default RSA keys are used still.
Signed-off-by: Dmitry Rozhkov <dmitry.rozhkov@linux.intel.com>
kubeadm still generates RSA keys when deploying a node, but also
accepts ECDSA keys if they already exist pregenerated in the
directory specified in --cert-dir.
The function certs.NewCACertAndKey() is just a wrapper around
pkiutil.NewCertificateAuthority() which doesn't add any
additional functionality.
Instead use pkiutil.NewCertificateAuthority() directly.
In v1alpha3's, control plane component config options were nested directly into
the ClusterConfiguration structure. This is cluttering the config structure and
makes it hard to maintain. Therefore the control plane config options must be
separated into different substructures in order to graduate the format to beta.
This change does the following:
- Introduces a new structure called ControlPlaneComponent, that contains fields
common to all control plane component types. These are currently extra args
and extra volumes.
- Introduce a new structure called APIServer that contains
ControlPlaneComponent and APIServerCertSANs field (from ClusterConfiguration)
- Replace all API Server, Scheduler and Controller Manager options in
ClusterConfiguration with APIServer, ControllerManager and Scheduler fields
of APIServer and ControlPlaneComponent types.
Signed-off-by: Rostislav M. Georgiev <rostislavg@vmware.com>
