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Istio high 5xx error rate
warning

Description High percentage of HTTP 5xx responses in Istio (> 5%).
Query for 1m 
>>>
	
				
					
					
						sum
					
				
			
				
					(
				
			
				
					
					
						rate
					
				
			
				
					(
				
			
				
					
				
			
				
					{reporter="destination", response_code=~"5.*"}[5m])) / 
				
			
				
					
					
						sum
					
				
			
				
					(
				
			
				
					
					
						rate
					
				
			
				
					(
				
			
				
					
				
			
				
					{reporter="destination"}[5m])) * 100 > 5
Query Explanation

The query calculates the percentage of requests that returned a 5xx status code over the last 5 minutes for all Istio‑managed services, and triggers when this fraction exceeds 5 %. If more than five percent of the total destination‑reported requests are 5xx errors, the alert fires.

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