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Frontend GetAds RPC Fails with UNAVAILABLE Connection Errors

Log PatternERROR3 all time

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{"first_seen_at":"2026-08-28T16:25:23.080343Z","log_level":null,"log_pattern":"request_type;neutral⇒outgoing rpc.method;neutral⇒GetAds rpc.service;neutral⇒oteldemo.AdService span_name;neutral⇒grpc.oteldemo.AdService/GetAds status;badge-error⇒ERROR status;right-badge-error⇒ERROR protocol;right-badge-neutral⇒rpc duration;right-badge-neutral⇒<*> µs user id;right-badge-neutral⇒<*>","occurrence_count":3,"pattern_hash":"ee945daf","sample_message":"request_type;neutral⇒outgoing rpc.method;neutral⇒GetAds rpc.service;neutral⇒oteldemo.AdService span_name;neutral⇒grpc.oteldemo.AdService/GetAds status;badge-error⇒ERROR attributes;text-textWeak⇒{\"grpc\":{\"error_message\":\"14 UNAVAILABLE: No connection established. Last error: Error: connect ECONNREFUSED 10.43.3.105:8080. Resolution note: \",\"error_name\":\"Error\"},\"rpc\":{\"grpc\":{\"status_code\":14},\"method\":\"GetAds\",\"service\":\"oteldemo.AdService\",\"system\":\"grpc\"},\"server\":{\"address\":\"ad\",\"port\":8080},\"user\":{\"id\":\"2e50cde6-6c8d-4dd6-8317-30ef7d57f467\"}} status;right-badge-error⇒ERROR protocol;right-badge-neutral⇒rpc duration;right-badge-neutral⇒554.5 µs user id;right-badge-neutral⇒2e50cde6-6c8d-4dd6-8317-30ef7d57f467","service_name":"frontend","source_field":"summary"}

## Frontend GetAds RPC Fails with UNAVAILABLE Connection Errors

- Type: log_pattern
- Severity: info
- Service: frontend

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outgoingGetAdsoteldemo.AdServicegrpc.oteldemo.AdService/GetAdsERRORERRORrpc<*> µs user<*>

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outgoingGetAdsoteldemo.AdServicegrpc.oteldemo.AdService/GetAdsERROR{"grpc":{"error_message":"14 UNAVAILABLE: No connection established. Last error: Error: connect ECONNREFUSED 10.43.3.105:8080. Resolution note: ","error_name":"Error"},"rpc":{"grpc":{"status_code":14},"method":"GetAds","service":"oteldemo.AdService","system":"grpc"},"server":{"address":"ad","port":8080},"user":{"id":"2e50cde6-6c8d-4dd6-8317-30ef7d57f467"}}ERRORrpc554.5 µs user2e50cde6-6c8d-4dd6-8317-30ef7d57f467

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