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Container Service for Kubernetes:Release notes for ACK eRDMA Controller

Last Updated:Mar 20, 2025

ACK eRDMA Controller manages the elastic network interfaces (ENIs) for Elastic Remote Direct Memory Access (eRDMA). It also enables eRDMA features for pod configurations in Container Service for Kubernetes (ACK) clusters. This topic describes the release notes for this controller.

Introduction

eRDMA is an RDMA network service provided by Alibaba Cloud that features low latency, high throughput, and high elasticity. eRDMA is developed based on the fourth-generation SHENLONG architecture and Virtual Private Cloud (VPC). It is fully compatible with the RDMA ecosystem and provides an ultra-large, inclusive network for Elastic Compute Service (ECS) instances.

ACK eRDMA Controller is a Kubernetes controller for eRDMA, providing ENIs management, scheduling, and pod networking capabilities for eRDMA.

Usage note

For more information about how to use ACK eRDMA Controller, see Use eRDMA to accelerate container networking.

Change history

March 2025

Version

Release date

Description

Impact

v0.2.5

March 13, 2025

  • Pods in hostNetwork mode can use eRDMA.

  • Clusters running Kubernetes 1.20 are supported.

This update has no impact on workloads.

February 2025

Version

Release date

Description

Impact

v0.2.4

February 19, 2025

  • Dependency on Webhooks is eliminated in the Shared Memory Communication over RDMA (SMC-R) feature.

  • Agent permission dependencies are minimized.

This update has no impact on workloads.

December 2024

Version

Release date

Description

Impact

v0.2.3

December 5, 2024

Permissions are authorized through ACK roles, eliminating the dependency on RAM Roles for Service Accounts (RRSA) authorization configurations.

This update has no impact on workloads.

November 2024

Version

Release date

Description

Impact

v0.2.2

November 26, 2024

The routing priority configuration for ENIs of eRDMA is optimized.

This update has no impact on workloads.

v0.2.1

November 25, 2024

  • ContainerOS is supported as a node operating system.

  • The failure that occasionally occurs when you download and install the driver is fixed.

This update has no impact on workloads.

v0.1.0

November 18, 2024

ACK eRDMA Controller is released.

This update has no impact on workloads.