Week Ending December 8, 2019

Developer News

Kubernetes 1.17 has been released! Interesting features include (but are not limited to) better IPv6 and DualStack support, using EndpointSlices instead of Endpoints for everything, and CSI Topology goes GA in time to make everyone migrate to CSI using Volume Migration. Look out for all of the deprecated metrics that haven been removed from this version, and the requirement for Go 1.13.4+.

Release Schedule

Next Deadline: Kubernetes 1.18 cycle begins, January 2

v1.17 is released, which means we now enter the limbo of the Holiday season, before work on the next release begins on the new year. If you’re interested in serving on the 1.18 release team, follow the team issue.

Updates on all supported versions, including 1.14.10, 1.15.7, and 1.16.4, are due to be released on Wednesday December 11th. If you’re still using 1.13, it’s past time to upgrade.

1.17 Merges

Webhook backend requests don’t get rate-limited, fixing a major performance regression

1.18 Merges

Scheduler explains all predicate failures instead of just the one it hated the most
Overhauled Kubelet Cert TTL handling, including renaming the stat certificate_manager_server_ttl_seconds and having it report the number of seconds until timeout; we also get a metric for rotation errors
Kubeadm now checks for conntrack since it’s a dependency of the Kubelet, and has refactored how it handles component configs with the side effect of erroring if you feed it an unsupported version
kubectl drain adds option skip-wait-for-delete-timeout to keep you from waiting for stubborn pods forever, and disable-eviction so you can kill pods with extreme prejudice; drain also supports dry-run
EncryptionConfiguration finally gets some defaults and validation
CSI PVs show FSType in kubectl decribe
metadata-agent containers and metrics-server containers need to run on Linux nodes in a mixed cluster

Deprecated

A whole bunch of kubelet metrics deprecated in 1.14 are getting removed in 1.18

Version Updates (in 1.18)

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