ack-rdma-device-plugin component introduction and change log - Container Service for Kubernetes

ack-rdma-device-plugin manages and exposes the Remote Direct Memory Access (RDMA) hardware resources of the nodes in an ACK cluster. Acting as a bridge between a node and the control plane, it reports the health and number of RDMA devices, and allocates and mounts them according to pod resource requests.

Overview

ack-rdma-device-plugin is the standard RDMA device plugin provided by ACK. It discovers and reports the RDMA devices on a node, such as Host Channel Adapter (HCA) cards, so that Kubernetes can schedule them as resources and then allocate and mount them to pods.

Install this component in an ACK Lingjun node pool to use the high-performance RDMA network features of Lingjun nodes.

Capabilities

Standard compatibility: Follows community device plugin standards to ensure compatibility and extensibility.
Container-native RDMA: In IPv6 network mode on Lingjun nodes, delivers RDMA network capabilities directly to the container network environment, improving performance for network-sensitive applications.
Arm architecture support: Runs on nodes with the Arm architecture.
Custom device names: Supports configuring custom names for RDMA devices.

Next steps

Use RDMA networks for pods on Lingjun nodes

Change log

August 2026

Version

Image address

Change time

Change description

Impact

1.1.5

registry-cn-hangzhou.ack.aliyuncs.com/acs/k8s-rdma-sriov-dev-plugin:v1.1.5-c12a283

August 14, 2026

Added support for exclusive mode for RDMA NICs.
Added support for allocating RDMA devices based on NUMA topology.
Optimized IPv6 RDMA network configuration and fixed an issue where gateway neighbor entries were unstable.
Fixed security vulnerabilities.

With the default configuration, this upgrade does not affect existing services.

To enable exclusive mode, follow the requirements described in documentations.

October 2025

Version	Image address	Change time	Change description	Impact
1.1.2	registry-cn-hangzhou.ack.aliyuncs.com/acs/k8s-rdma-sriov-dev-plugin:v1.1.2-5fee869	October 24, 2025	Added support for custom device names. Optimized the display of custom component parameters.	This upgrade does not affect your services.

September 2025

Version	Image address	Change time	Change description	Impact
1.1.1	registry-cn-hangzhou.ack.aliyuncs.com/acs/k8s-rdma-sriov-dev-plugin:v1.1.0-22f9697-aliyun	September 12, 2025	Added support for deployment on nodes with the Arm architecture. Fixed component configuration issues. Added node affinity for Lingjun nodes to prioritize scheduling the component to Lingjun nodes.	This upgrade does not affect your services.

July 2025

Version	Image address	Change time	Change description	Impact
1.1.0	registry-cn-hangzhou.ack.aliyuncs.com/acs/k8s-rdma-sriov-dev-plugin:v1.1.0-da78746-aliyun	July 7, 2025	Enabled support for container networks in IPv6 network mode on Lingjun nodes. Pods can now perform native RDMA communication.	This upgrade does not affect your services.

September 2023

Version	Image address	Change time	Change description	Impact
1.0.0	registry-cn-hangzhou.ack.aliyuncs.com/acs/k8s-rdma-sriov-dev-plugin:v1.0.0-eeb8be6-aliyun	September 1, 2023	Published on the Add-ons page.	Not applicable.