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Help Me Fix Instance Group Unhealthy Status

Hi everyone, I need some help regarding an issue with my instance group on Google Cloud Platform.

I'm currently using an instance group with a load balancer and autoscaling enabled. However, the instance keeps being marked as unhealthy by the health check, even though port 30120 is open, and the instance itself seems to be running fine. Here are the health check settings:

  • Protocol: TCP
  • Port: 30120
  • Interval: 15 seconds
  • Timeout: 10 seconds
  • Healthy threshold: 2 consecutive successes
  • Unhealthy threshold: 3 consecutive failures

The instance group only has one instance, and its health status remains unhealthy, even though I can manually access it via its external IP. I've tried restarting the instance and tweaking some configurations, but the issue persists.

Has anyone experienced a similar issue or know how to resolve this? Any advice would be greatly appreciated! Thanks in advance!

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