Connecting a secured-cluster Sensor to Central behind a HAProxy Ingress
Issue
The customer was attempting to connect their 3.0.55.0 Sensor to Central in another cluster using an OpenShift (4.6.13) route with HAProxy ingress, and they were seeing an error message of
common/sensor: 2021/06/02 09:44:52.725305 sensor.go:320: Error: Sensor reported an error: opening stream: rpc error: code = Unavailable desc = connection closed
main: 2021/06/02 09:44:52.725347 main.go:66: Fatal: Sensor exited with error: opening stream: rpc error: code = Unavailable desc = connection closed
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