feat: HAProxy Prometheus exporter on frontproxy#111
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Enable HAProxy's native /metrics exporter so queue depth and session counts are available for autoscaling and saturation alerts. Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
/metricsendpoint ons3proxy-python-frontproxy(port 8404)haproxy_frontend_current_sessions,haproxy_backend_current_queue,haproxy_server_current_queue, etc.ServiceMonitorto scrape frontproxy metrics into Thanosfrontproxy.metrics.*values (enabled by default when frontproxy is on)Test plan
helm templatewithfrontproxy.enabled=truerenders prometheus frontend, metrics port, and ServiceMonitor/metricsreturns HAProxy metrics on port 8404haproxy_backend_current_queue, etc.)Made with Cursor