Release notes for Terway Edge network plug-in - Container Service for Kubernetes

Terway Edge is a network plug-in that Alibaba Cloud provides to help you build underlay networks for containers in Container Service for Kubernetes (ACK) Edge clusters. Terway Edge is developed based on Terway and Flannel (Route mode). This topic describes the overview, usage notes, and release notes for Terway Edge.

Introduction

Terway Edge applies distinct network solutions for different node pool types.

In the cloud node pool, Terway adopts a cloud-native network solution and configures the container network by using elastic network interfaces (ENIs). An ENI is a virtual network interface controller (NIC) provided by Alibaba Cloud. An ENI assigns IP addresses within a virtual private cloud (VPC) to pods. You do not need to specify a CIDR block for the pods.
In the edge node pool, a vSwitch CIDR block must be specified for pods. The container will acquire IP addresses from this pod CIDR block. Additionally, advertising routes to the vSwitche through Border Gateway Protocol (BGP) is supported in the container.

Kubernetes version compliance

terway-edge version	Kubernetes version
> v1.13	≥ 1.32
v1.9	≥ 1.30
v1.8	≥ 1.28 and ＜ 1.32

Limits

The container network plug-in must be installed during cluster creation and cannot be modified thereafter.
Only ACK Edge clusters that run Kubernetes 1.28 or later are supported. For more information about how to use the Terway Edge network plug-in, see Usage guide for Terway Edge.

Release notes

April 2025

Version	Description	Release date	Impact
v1.9.14	Disabled source/destination IP check for cloud ENIs by default.	Apr. 1, 2025	This update has no impact on workloads.
v1.8.17	Disabled source/destination IP check for cloud ENIs by default.	Apr. 1, 2025	This update has no impact on workloads.

March 2025

Version	Description	Release date	Impact
v1.13.6	The user-side control plane component terway-edge-manager is removed. terway-edge-controlplane becomes a mandatory system-managed component.	Mar. 15, 2025	The update may cause BGP sessions to restart. Ensure that graceful restart is configured for BGP switches.

February 2025

Version	Description	Release date	Impact
v1.9.13	Source Network Address Translation (SNAT) can be enabled or disabled for pod egress traffic. BGP failure events are reported.	Feb. 15, 2025	The update may cause BGP sessions to restart. Ensure that graceful restart is configured for BGP switches.

December 2024

Version	Description	Release date	Impact
v1.8.15	Scaling of pod vSwitches in the Edge Node Service (ENS) network is supported. The efficiency of pod IP allocation in the ENS network is optimized. Graceful restart is supported in Border Gateway Protocol (BGP) advertisement. Rolling update is supported. Network autonomy is supported if the version of the cloud-hub plug-in is 0.12.3 or later.	Dec. 30, 2024	The update may cause BGP sessions to restart. Ensure that graceful restart is configured for BGP switches.

November 2024

Version

Description

Release date

Impact

v1.8.13

The ENS network is supported.
BGP advertisement is supported.

Nov. 15, 2024

The update may cause BGP sessions to restart. Ensure that graceful restart is configured for BGP switches.

September 2024

Version

Description

Release date

Impact

v1.8.6

Underlay container network communication is supported.
BGP can be used to advertise container routes.

Sept. 15, 2024

This update has no impact on workloads.