HAproxy has no alive backends
critical

Description HAProxy has no alive active or backup backends for {{ $labels.proxy }}
Query
>>>
	
				
					
				
			
				
					 + 
				
			
				
					
				
			
				
					 == 0
				
			
    
Query Explanation

The query adds the active and backup server counts for each HAProxy backend (haproxy_backend_active_servers + haproxy_backend_backup_servers) and fires when the total equals 0, meaning that for the specified proxy label there are no alive backends at all. The alert triggers whenever a backend loses all its servers, indicating complete unavailability.

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