Tag: XDS
Problems related to XDS, such as XDS errors, or XDS timeout.
| ID | Title | Description | Category | Technology | Tags |
|---|---|---|---|---|---|
| prequel-2025-0026 Low Impact: 3/10 Mitigation: 6/10 | Istio XDS GRPC Failure | Envoy sidecars or Ambient **ztunnel** keep retrying the control-plane stream and log ``` XDS client connection error: gRPC connection error:status: Unknown, message: \"...\", source: tcp connect error: Connection refused (os error 111) ``` or ``` ... source: tcp connect error: deadline has elapsed ``` The proxies never reach “ADS stream established”, so no configuration, certificates, or policy updates are delivered until this is mitigated. | Istio Problems | istio | IstioXDS |