ACK eRDMA Controller manages elastic network interfaces (ENIs) for Elastic Remote Direct Memory Access (eRDMA) and enables eRDMA features for pod configurations in Container Service for Kubernetes (ACK) clusters. This topic describes the release notes for ACK eRDMA Controller.
What is ACK eRDMA Controller
eRDMA is an RDMA network service from Alibaba Cloud that delivers low latency, high throughput, and high elasticity. Built on the fourth-generation SHENLONG architecture and Virtual Private Cloud (VPC), eRDMA 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 ENI management, scheduling, and pod networking capabilities.
Change history
July 2025
| Version |
Release date |
Description |
Impact |
| v0.2.8 |
July 10, 2025 |
Optimization: Improved management of existing eRDMA devices on nodes. Optimization: Prevented the controller from being scheduled to virtual nodes. |
No impact on workloads. |
May 2025
| Version |
Release date |
Description |
Impact |
| v0.2.6 |
May 15, 2025 |
Feature: Added support for ECS metadata access in security hardening mode. Bug fix: Fixed RDMA device allocation anomalies in ContainerOS environments. |
No impact on workloads. |
March 2025
| Version |
Release date |
Description |
Impact |
| v0.2.5 |
March 13, 2025 |
Feature: Pods in hostNetwork mode can now use eRDMA. Feature: Added support for clusters running Kubernetes 1.20. |
No impact on workloads. |
February 2025
| Version |
Release date |
Description |
Impact |
| v0.2.4 |
February 19, 2025 |
Optimization: Removed the dependency on Webhooks in the Shared Memory Communication over RDMA (SMC-R) feature. Optimization: Minimized agent permission dependencies. |
No impact on workloads. |
December 2024
| Version |
Release date |
Description |
Impact |
| v0.2.3 |
December 5, 2024 |
Optimization: Permissions are now authorized through ACK roles, removing the dependency on RAM Roles for Service Accounts (RRSA) authorization configurations. |
No impact on workloads. |
November 2024
| Version |
Release date |
Description |
Impact |
| v0.2.2 |
November 26, 2024 |
Optimization: Improved the routing priority configuration for eRDMA ENIs. |
No impact on workloads. |
| v0.2.1 |
November 25, 2024 |
Feature: Added support for ContainerOS as a node operating system. Bug fix: Fixed a failure that occasionally occurred when downloading and installing the driver. |
No impact on workloads. |
| v0.1.0 |
November 18, 2024 |
ACK eRDMA Controller is released. |
No impact on workloads. |