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envoyproxy / envoy

Cloud-native high-performance edge/middle/service proxy
https://www.envoyproxy.io
Apache License 2.0
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Lack of Configuration for Minimum Healthy Upstream Nodes in Health Checking #34407

Open Melod-YI opened 1 month ago

Melod-YI commented 1 month ago

I've noticed that in Envoy's health check configuration for upstream nodes, has no option to set a minimum number of healthy nodes. Like max_ejection_percent in outlier detection.

Since both health checking and outlier detection are mechanisms to identify and ejection unhealthy upstream nodes, I'd expect the health checking configuration to also provide options like "minimum healthy nodes" or "maximum unhealthy nodes" to control the behavior when the number of healthy nodes falls below or exceeds certain thresholds.

I'm wondering if there's a specific reason why such configurations are not available in Envoy's health checking, or if there are any plans to introduce them in the future. If there's a better way to achieve similar functionality, I'd appreciate any guidance or recommendations.

github-actions[bot] commented 2 days ago

This issue has been automatically marked as stale because it has not had activity in the last 30 days. It will be closed in the next 7 days unless it is tagged "help wanted" or "no stalebot" or other activity occurs. Thank you for your contributions.