Kubernetes 1.22

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What’s New in Kubernetes 1.22

© 2021 Cloud Native Computing Foundation
2
James Laverack
1.22 Enhancements Lead
@JamesLaverack
Presenters
Jesse Butler
1....

© 2021 Cloud Native Computing Foundation
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Agenda
★ 1.23 Release Updates
★ 1.22 Highlights
★ SIG Updates
★ Q&A

1.23 Release Updates

© 2021 Cloud Native Computing Foundation
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Overview
★ 1.23 Release Timeline
○ Start Date: Monday 23rd August 2021
○ Enhanc...

1.22 Highlights

© 2021 Cloud Native Computing Foundation
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Overview
★ 56 total enhancements tracked in 1.22
○ 13 Stable Enhancements
○ 24 ...

© 2021 Cloud Native Computing Foundation
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★ Server-side Apply
★ Quality of Service for memory resources
★ Improved contro...

© 2021 Cloud Native Computing Foundation
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★ Node swap support
★ Windows capabilities
★ Default profiles for seccomp
(mor...

SIG Updates

API Machinery

© 2021 Cloud Native Computing Foundation
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Server-Side Apply
● Logic for kubectl apply is moved from the
client-side to t...

© 2021 Cloud Native Computing Foundation
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Warning Headers When Using Deprecated APIs
● This feature surfaces warnings to...

© 2021 Cloud Native Computing Foundation
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Immutable Label Selectors for all Namespaces
● Ensures that namespaces always ...

© 2021 Cloud Native Computing Foundation
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Priority and Fairness for API Server Requests
● Extends the API server’s overl...

Apps

© 2021 Cloud Native Computing Foundation
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CronJobs
● Upgrades the cronjob API version to
batch/v1 (from batch/v1beta1).
...

© 2021 Cloud Native Computing Foundation
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PodDisruptionBudget Eviction
● Upgrades the eviction API version to
policy/v1 ...

© 2021 Cloud Native Computing Foundation
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DaemonSet maxSurge
● Allows a daemonset to “surge” to more
than one pod per no...

© 2021 Cloud Native Computing Foundation
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LogarithmicScaleDown
● Compares ready and creation
timestamps in a logarithmic...

© 2021 Cloud Native Computing Foundation
22
Indexed Job Semantics
● This feature adds support to launch Jobs
with an ‘inde...

© 2021 Cloud Native Computing Foundation
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Add Suspend Field to Job API
● Allows users to suspend and resume a job
from t...

© 2021 Cloud Native Computing Foundation
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PodDeletionCost
● Use an annotation on a pod to hint at
how “expensive” it is ...

© 2021 Cloud Native Computing Foundation
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Job Tracking Without Lingering Pods
● The current Job controller currently rel...

© 2021 Cloud Native Computing Foundation
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minReadySeconds on stateful sets
● This feature allows a user to specify
minim...

Auth

© 2021 Cloud Native Computing Foundation
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External client-go Credential Providers
● Authentication providers moved
out-o...

© 2021 Cloud Native Computing Foundation
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Bound Service Account Token Volumes
● More secure way of providing service
acc...

© 2021 Cloud Native Computing Foundation
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CertificateSigningRequest duration
● Allow clients to request a specific durat...

© 2021 Cloud Native Computing Foundation
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PodSecurity Admission (PSP replacement)
● This feature replaces Pod Security P...

CLI

© 2021 Cloud Native Computing Foundation
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kubectl Commands in Headers
● This feature makes kubectl send the
original com...

Cloud Provider

© 2021 Cloud Native Computing Foundation
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Controller Manager Leader Migration
● Support a migration process for large
sc...

Cluster Lifecycle

© 2021 Cloud Native Computing Foundation
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Run control-plane as non-root in kubeadm
● This feature helps in running the
c...

Instrumentation

© 2021 Cloud Native Computing Foundation
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API Server Tracing
● This feature enhances the API Server to
allow tracing req...

Network

© 2021 Cloud Native Computing Foundation
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EndpointSlices
● This feature introduces a new
EndpointSlice API aiming to rep...

© 2021 Cloud Native Computing Foundation
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Adding AppProtocol to Services and Endpoints
● A concept of AppProtocol was ad...

© 2021 Cloud Native Computing Foundation
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Service Disabling LB Node Ports
● This feature adds a new field to Service to
...

© 2021 Cloud Native Computing Foundation
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Service LoadBalancer Class
● This is a light-weight approach for Service
Type=...

© 2021 Cloud Native Computing Foundation
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Network Policy to support Port Ranges
● This feature adds a new field that all...

© 2021 Cloud Native Computing Foundation
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Service Internal Traffic Policy
● This feature adds a new API in Service to
ad...

© 2021 Cloud Native Computing Foundation
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Namespace Scoped Ingress Class Parameters
● This feature adds a new Scope and
...

© 2021 Cloud Native Computing Foundation
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Graceful Termination for Local External Traffic Policy
● Gracefully handle tra...

© 2021 Cloud Native Computing Foundation
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Expanded DNS Configuration
● With this feature, kubernetes allows more
DNS sea...

Node

© 2021 Cloud Native Computing Foundation
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HugePages
● Enable applications running in a
Kubernetes cluster to use huge pa...

© 2021 Cloud Native Computing Foundation
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Configure FQDN as Hostname for Pods
● This feature gives users the ability to ...

© 2021 Cloud Native Computing Foundation
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Sizable memory backed volumes
● This feature improves the portability of
pod d...

© 2021 Cloud Native Computing Foundation
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Ephemeral Containers
● This proposal adds to Kubernetes a
mechanism to run a c...

© 2021 Cloud Native Computing Foundation
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Liveness Probe Grace Periods
● This feature will override the
`terminationGrac...

© 2021 Cloud Native Computing Foundation
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Kubelet-in-UserNS (aka Rootless mode)
● This feature allows running the entire...

© 2021 Cloud Native Computing Foundation
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Cgroups v2
● This feature adds support for cgroups v2 in
Kubernetes.
feature.k...

© 2021 Cloud Native Computing Foundation
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Memory QoS with cgroups v2
● Use the cgroups v2 Linux kernel feature to
implem...

© 2021 Cloud Native Computing Foundation
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Node system swap support
● This feature adds swap support to nodes
in a contro...

© 2021 Cloud Native Computing Foundation
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Enable seccomp by default
● This feature enables seccomp by default
for all wo...

© 2021 Cloud Native Computing Foundation
61
CPU Manager Policies
● This feature guarantees that no physical
core is shared...

Scheduling

© 2021 Cloud Native Computing Foundation
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Scheduler Component Config API
● This feature provides a configuration API
tha...

© 2021 Cloud Native Computing Foundation
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Prefer Nominated Nodes
● This enhancement can speed up
scheduling by evaluatin...

© 2021 Cloud Native Computing Foundation
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Namespace Selector for Pod Affinity
● The Namespace selector for Pod affinity
...

© 2021 Cloud Native Computing Foundation
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Single scoring plugin for Node resources
● Combines existing scoring plugins i...

Storage

© 2021 Cloud Native Computing Foundation
68
CSIServiceAccountToken
● This feature is a way for for CSI drivers to
access t...

© 2021 Cloud Native Computing Foundation
69
Volume Populator DataSource Redesign
● Originally added in alpha in v1.18.
● T...

© 2021 Cloud Native Computing Foundation
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Delegate FSGroup to CSI Driver instead of Kubelet
● When fsgroup is specified,...

© 2021 Cloud Native Computing Foundation
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RWO Pod Access Mode
● This feature adds a ReadWriteOncePod
access mode to pers...

Windows

© 2021 Cloud Native Computing Foundation
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CSI Plugins for Windows
● CSI plugins and related support for
Windows is stabl...

© 2021 Cloud Native Computing Foundation
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Windows Privileged Containers
● Some functionality in Kubernetes requires
priv...

Release Team Shadow Program

© 2021 Cloud Native Computing Foundation
76
Release Team Shadow Program
★ Release Team Roles
○ Release Team Lead
○ Enhance...

Questions?

Thank You

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