hi all,
I remember seeing this log entry repeatedly in a customer environment (GKE Anthos) last year, and it was something about load balancer heartbeat. Though it was not port 8091 that time.
For K8s based deployment, the port exposed to outside world could be different from the ports shown in the service, since the LB will define those external port and map it back to the Pod’s ports.
For my case last time, it was found out to be something with the GKE environment and the support from GKE helped the client out, I didn’t get what was the root cause etc.