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HAProxy server connection errors
critical

Description Too many connection errors to {{ $labels.server }} server (> 100 req/s). Request throughput may be too high.
Query 
>>>
	
				
					(sum by (proxy) (
				
			
				
					
					
						rate
					
				
			
				
					(
				
			
				
					
				
			
				
					[1m]))) > 100
Query Explanation

The rule computes the per‑proxy error rate as rate(haproxy_server_connection_errors_total[1m]), sums it across each proxy, and triggers when that summed rate exceeds 100 errors per second, indicating too many connection errors for the affected server.

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