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Nginx high HTTP 5xx error rate
critical

Description Too many HTTP requests with status 5xx (> 5%)
Query for 1m 
>>>
	
				
					
					
						sum
					
				
			
				
					(
				
			
				
					
					
						rate
					
				
			
				
					(
				
			
				
					
				
			
				
					{status=~"^5.."}[1m])) / 
				
			
				
					
					
						sum
					
				
			
				
					(
				
			
				
					
					
						rate
					
				
			
				
					(
				
			
				
					
				
			
				
					[1m])) * 100 > 5
Query Explanation

The query computes the percentage of Nginx requests that returned 5xx status codes in the last minute by dividing the sum of the rate of nginx_http_requests_total{status=~"^5.."} by the sum of the total request rate and multiplying by 100. The alert triggers when this percentage exceeds 5 %.

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