ClickHouse Memory Usage Warning
warning

Description Memory usage is over 80%.
Query for 5m
>>>
	
				
					
				
			
				
					 / 
				
			
				
					
				
			
				
					 * 100 > 80
				
			
    
Query Explanation

The rule computes the memory‑usage percentage for a ClickHouse process by dividing ClickHouseAsyncMetrics_CGroupMemoryUsed by ClickHouseAsyncMetrics_CGroupMemoryTotal, multiplying the result by 100, and fires when this percentage exceeds 80 %. In other words, if the instance’s memory consumption rises above 80 % of its allocated cgroup limit, the alert is triggered.

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