- Mark the "node-role.kubernetes.io/master" key for labels
and taints as deprecated.
- During "kubeadm init/join" apply the label
"node-role.kubernetes.io/control-plane" to new control-plane nodes,
next to the existing "node-role.kubernetes.io/master" label.
- During "kubeadm upgrade apply", find all Nodes with the "master"
label and also apply the "control-plane" label to them
(if they don't have it).
- During upgrade health-checks collect Nodes labeled both "master"
and "control-plane".
- Rename the constants.ControlPlane{Taint|Toleraton} to
constants.OldControlPlane{Taint|Toleraton} to manage the transition.
- Mark constants.OldControlPlane{{Taint|Toleraton} as deprecated.
- Use constants.OldControlPlane{{Taint|Toleraton} instead of
constants.ControlPlane{Taint|Toleraton} everywhere.
- Introduce constants.ControlPlane{Taint|Toleraton}.
- Add constants.ControlPlaneToleraton to the kube-dns / CoreDNS
Deployments to make them anticipate the introduction
of the "node-role.kubernetes.io/control-plane:NoSchedule"
taint (constants.ControlPlaneTaint) on kubeadm control-plane Nodes.
Aborted requests are the ones that were disrupted with http.ErrAbortHandler.
For example, the timeout handler will panic with http.ErrAbortHandler when a response to the client has been already sent
and the timeout elapsed.
Additionally, a new metric requestAbortsTotal was defined to count aborted requests. The new metric allows for aggregation for each group, version, verb, resource, subresource and scope.
without APIServerIdentity enabled, stale apiserver leases won't be GC'ed
and the same for stale storage version entries. In that case the storage
migrator won't operate correctly without manual intervention.
To make sure that the storage version filter can block certain requests until
the storage version updates are completed, and that the apiserver works
properly after the storage version updates are done.
StorageVersions are updated during apiserver bootstrap.
Also add a poststarthook to the aggregator which updates the
StorageVersions via the storageversion.Manager
Previously no timeout was set. Requests without explicit timeout might potentially hang forever and lead to starvation of the application.
When no timeout was specified a default one will be applied.
