This topic describes the issue that no gateways or non-Istio gateways are returned when the kubectl command is run to query gateways. This topic also describes the cause of the issue and provides solutions.
An Istio gateway is created. After you run the following command, the
No resources found message is returned or non-Istio gateways are returned.
kubectl get gateway --all-namespaces
If you use Alibaba Cloud Service Mesh (ASM) instances whose Istio version is 1.8.6 or later, you may encounter the issue. This is because Kubernetes Gateway API is automatically installed in ASM instances whose Istio version is 1.8.6 or later. For more information, see Use Gateway API to define a routing rule.
Both Kubernetes Gateway API and Istio API provide a resource that is named Gateway.
The two Gateway resources have similar features, but they are different resources.
The system cannot identify which resource that you specify when you run
kubectl get gateway. As a result, Kubernetes gateways instead of Istio gateways may be returned. In this
case, if no Kubernetes gateways are defined, no gateways are returned. If Kubernetes
gateways are defined, the Kubernetes gateways are returned.
- Use the ASM console to view Istio gateways.
- Use a full resource name or recognizable abbreviation in the kubectl command.
For example, you can use gtw to represent Kubernetes gateways, and gw to represent Istio gateways. In this case, you can run
kubectl get gwor
kubectl get gateways.networking.istio.ioto make sure that Istio gateways can be returned.