Week Ending March 8, 2020

Developer News

Kubecon EU has been postponed, so the Contributor Summit will be postponed with it. We will have an additional “virtual summit” at the end of March; details TBD (and help wanted. ask #sig-contribex).

The URI for canonical Kubernetes containers is moving from k8s.gcr.io to gcr.io/k8s-artifacts-prod on April 1, which will involve both testing changes and an image freeze. You also may need to create a staging repo for your images if you’re responsible for any.

Release may be ditching bazel; comment now. SIG-Cloud-Provder and Test-Infra are working on overhauling our E2E tests so that they work across multiple cloud providers. Assistance and comments wanted.

We’re also getting a Kubernetes Contributor Twitter feed. Tell us what it should be called.

Release Schedule

Next Deadline: Finish Your Docs, March 16

We are currently in Code Freeze, which lifts on March 17th. 1.18 beta 2 should be released today. If you’re not working on docs and passing tests this week, you should be.

Patch releases for all active branches (1.17.4, 1.16.8, and 1.15.11) are due out on Thursday March 12. v1.14 is EOL and no longer being patched, so please upgrade if you’re on it (looking at you, EKS, AKS, and GKE).

Other Merges

CRDs have way more config validation options
Debug containers are here; try kubectl alpha debug today
NodeCIDR now in local mode as a step towards reducing our number of IPtables rules
/readyz reports failure immediately on shutdown initiation
The metadata client, scale client, and the dynamic client are supporting context.Context on our way to have all of client-go support it
Scheduler: no more duplicate names for plugin configs, and you can’t use the Policy and PluginConfig APIs at the same time
IngressRules take wildcard hosts and
Ingress gets a Resource field to pave the way for alternate backends, PathType for extra validation flexibility, and IngressClass for configuration
EventRecorded uses the default namespace, not kube-system
Shorten kubectl describe output by hiding last-applied-config info
Added endpoint slice batching to reduce traffic in large clusters
Reload client certs from disk
Kubelet cert rotation allows intermediate certs
Certs get a SignerName
Conformance image is based on the smaller debian stretch-slim
Azure and Ceph storage start using MountSensitive
Multiattach volumes get mounted in parallel across nodes
PodTopologySpread plugins support default constraints
kube-controller-manager, kube-scheduler, and kube-apiserver all expose profiling endpoints unless you disable them with --enable-profiling=false
Block volumes have an “uncertain” state where CSI is trying to mount them, but hasn’t succeeded yet
Arbitrary custom resources can be data sources with the GenericPVCDataSource feature gate
Stop sending kubelet no-op patches
API Server tells us to GOAWAY so we can bother some other, load-balanced, API server
Scheduler extender API moved to a staging repo
FSGroup recursive chown becomes possible for volumes
kubectl exec --filename
Behave sensibly around terminated containers in non-restarting pods
Get some Windows-specific flags for the Windows kubelet
Pods have a “NotReady” status when they are started but not functioning

Promoted

Deprecated

Deprecate --use-api for kubeadm cert renew
Deprecate scheduler AlgorithmSource, to be replaced by Extenders field
Deprecate kubectl create * --generator
Deprecate healhz-port and metrics-port in kube-proxy

Version Updates

Go has been updated on all active branches:

master: v1.13.8
v1.18, v1.17, v1.16: v1.13.8
v.1.5: v1.12.7

Also:

debian-base to v1.0.1 and debian-iptables to v11.0.3 in test images to patch CVE-2017-14062

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