jeffguorg opened a new issue #2533: URL: https://github.com/apache/apisix/issues/2533
### Issue description Hi, we are setting up a k8s cluster and setting up apisix to be the api gateway. but apisix could not proxy the request to the grpc backend services: "failed to set server peer [some-k8s-svc.default.svc.cluster.local:5202] err: no host allowed" said in logs/error.log backend server is ensured that it is always reachable from apisix ### Environment * apisix version (cmd: `apisix version`): 1.5 * OS: Kubernetes v1.18.8-aliyun.1 /Alpine Linux 3.11.6 [config.txt](https://github.com/apache/apisix/files/5442801/config.txt) [output.txt](https://github.com/apache/apisix/files/5442802/output.txt) ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
