Kubernetes 1.11: In-Cluster Load Balancing and CoreDNS Plugin Graduate to General Availability

Wednesday, June 27, 2018

Author: Kubernetes 1.11

We’re pleased to announce the delivery of Kubernetes 1.11, our second release of 2018!

Today’s release continues to advance maturity, scalability, and flexibility of Kubernetes, marking significant progress on features that the team has been hard at work on over the last year. This newest version graduates key features in networking, opens up two major features from SIG-API Machinery and SIG-Node for beta testing, and continues to enhance storage features that have been a focal point of the past two releases. The features in this release make it increasingly possible to plug any infrastructure, cloud or on-premise, into the Kubernetes system.

Notable additions in this release include two highly-anticipated features graduating to general availability: IPVS-based In-Cluster Load Balancing and CoreDNS as a cluster DNS add-on option, which means increased scalability and flexibility for production applications.

Let’s dive into the key features of this release:

IPVS-Based In-Cluster Service Load Balancing Graduates to General Availability

In this release,

CoreDNS Promoted to General Availability

Dynamic Kubelet Configuration Moves to Beta

This feature makes it possible for new Kubelet configurations to be rolled out in a live cluster. Currently, Kubelets are configured via command-line flags, which makes it difficult to update Kubelet configurations in a running cluster. With this beta feature, users can configure Kubelets in a live cluster via the API server.

Custom Resource Definitions Can Now Define Multiple Versions

Custom Resource Definitions are no longer restricted to defining a single version of the custom resource, a restriction that was difficult to work around. Now, with this beta

Custom Resource Definitions now also support "status" and "scale" subresources, which integrate with monitoring and high-availability frameworks. These two changes advance the ability to run cloud-native applications in production using Custom Resource Definitions.

Enhancements to CSI

Container Storage Interface (CSI) has been a major topic over the last few releases. After moving to

New Storage Features

Support for

The StorageObjectInUseProtection feature is now stable and prevents the removal of both

Each Special Interest Group (SIG) within the community continues to deliver the most-requested enhancements, fixes, and functionality for their respective specialty areas. For a complete list of inclusions by SIG, please visit the .

Availability

Kubernetes 1.11 is available for .

You can also install 1.11 using Kubeadm. Version 1.11.0 will be available as Deb and RPM packages, installable using the Kubeadm cluster installer sometime on June 28th.

4 Day Features Blog Series

If you’re interested in exploring these features more in depth, check back in two weeks for our 4 Days of Kubernetes series where we’ll highlight detailed walkthroughs of the following features:

Release team

This release is made possible through the effort of hundreds of individuals who contributed both technical and non-technical content. Special thanks to the

As the Kubernetes community has grown, our release process represents an amazing demonstration of collaboration in open source software development. Kubernetes continues to gain new users at a rapid clip. This growth creates a positive feedback cycle where more contributors commit code creating a more vibrant ecosystem. Kubernetes has over 20,000 individual contributors to date and an active community of more than 40,000 people.

The CNCF recently expanded its certification offerings to include a Certified Kubernetes Application Developer exam. The CKAD exam certifies an individual's ability to design, build, configure, and expose cloud native applications for Kubernetes. More information can be found here.
The CNCF recently added a new partner category, Kubernetes Training Partners (KTP). KTPs are a tier of vetted training providers who have deep experience in cloud native technology training. View partners and learn more here.
CNCF also offers
Kubernetes documentation now features

KubeCon

The world’s largest Kubernetes gathering, KubeCon + CloudNativeCon is coming to [Shanghai](register today!

Webinar

Join members of the Kubernetes 1.11 release team on July 31st at 10am PDT to learn about the major features in this release including In-Cluster Load Balancing and the CoreDNS Plugin. Register here.