I made a simple setup with two GCE instances behind a load balancer. But in the balancer logs, I can see random 502 responses with the following error: "failed_to_connect_to_backend"
Al thought the last health check was fine with 200 response, and checking my nginx logs shows that the request didn't even get though the backend to nginx.
I'm unable to know what the issue is, are there any sort of logs showing why it failed to connect to the backend? is it a a health check issue? are there any health checks logs?