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Cassandra client request read failure
critical

Description Read failures have occurred, ensure there are not too many unavailable nodes - {{ $labels.cassandra_cluster }}
Query for 2m 
>>>
	
				
					
					
						increase
					
				
			
				
					(
				
			
				
					
				
			
				
					{operation="read"}[1m]) > 0
Query Explanation

The query uses increase(cassandra_client_request_failures_total{operation="read"}[1m]) to count how many read request failures each Cassandra node has recorded over the past minute. The alert triggers when this count is greater than 0, i.e., any read failure occurs within the last minute, suggesting that some nodes may be unavailable.

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