* The Prometheus metrics for the kube-apiserver for tracking incoming API requests and latencies now return the `subresource` label for correctly attributing the type of API call. ([#46354](https://github.com/kubernetes/kubernetes/pull/46354), [@smarterclayton](https://github.com/smarterclayton))

     * Read operations can thus proceed without locking, but rely on selected uses of volatiles to
     * ensure that completed write operations performed by other threads are noticed. For most
     * purposes, the "count" field, tracking the number of elements, serves as that volatile
     * variable ensuring visibility. This is convenient because this field needs to be read in many
     * read operations anyway:
     *

// using a delete-marker and MetaSys entries. It's used to track tiered content of a
// deleted/overwritten version. This version is visible _only_to the scanner routine, for subsequent deletion.
// This kind of tracking is necessary since a version's tiered content is deleted asynchronously.

// Backend directory tree structure:
// disk1/
// └── bucket
//     └── object
//         ├── a192c1d5-9bd5-41fd-9a90-ab10e165398d

toys

// trade : Elite Registry Limited
// https://www.iana.org/domains/root/db/trade.html
trade

// trading : Dog Beach, LLC
// https://www.iana.org/domains/root/db/trading.html
trading

// training : Binky Moon, LLC
// https://www.iana.org/domains/root/db/training.html
training

// travel : Dog Beach, LLC
// https://www.iana.org/domains/root/db/travel.html
travel

toyoura.hokkaido.jp
toys
tozawa.yamagata.jp
tozsde.hu
tp.it
tr
tr.eu.org
tr.it
tr.no
tra.kp
trade
trader.aero
trading
trading.aero
traeumtgerade.de
trafficmanager.net
trafficplex.cloud
trainer.aero
training
trana.no
tranby.no
trani-andria-barletta.it
trani-barletta-andria.it
traniandriabarletta.it
tranibarlettaandria.it
tranoy.no

* On AWS kubelet returns an error when started under conditions that do not allow it to work (AWS has not yet tagged the instance), rather than failing silently. ([#60125](https://github.com/kubernetes/kubernetes/pull/60125), [@vainu-arto](https://github.com/vainu-arto))

* Included the list of security groups when failing with the errors that more than one is tagged. ([#58874](https://github.com/kubernetes/kubernetes/pull/58874), [@sorenmat](https://github.com/sorenmat))

* admission webhook registrations without a specific failure policy default to failing closed. ([#54162](https://github.com/kubernetes/kubernetes/pull/54162), [@deads2k](https://github.com/deads2k))