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Cassandra bad hacker
warning

Description Increase of Cassandra authentication failures
Query for 2m 
>>>
	
				
					
					
						rate
					
				
			
				
					(
				
			
				
					
				
			
				
					{name="org:apache:cassandra:metrics:client:authfailure:count"}[1m]) > 5
Query Explanation

The query calculates the per‑second rate of Cassandra authentication failures over the past minute (rate(...[1m])) and triggers when that rate exceeds 5. In other words, if the average number of auth failures is more than five per second over a one‑minute window, the alert fires.

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