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Host Memory is underutilized
info

Description Node memory usage is < 20% for 1 week. Consider reducing memory space. (instance {{ $labels.instance }})
Query 
>>>
	
				
					
					
						min_over_time
					
				
			
				
					(
				
			
				
					
				
			
				
					[1w]) > 
				
			
				
					
				
			
				
					 * .8
Query Explanation

The rule computes the smallest amount of free RAM recorded in the last week (min_over_time(node_memory_MemFree_bytes[1w])) and checks if it is larger than 80 % of the total memory (node_memory_MemTotal_bytes * 0.8). If this condition holds, the node has had at least 80 % of its memory free (i.e., memory usage under 20 %) continuously for a week, which triggers the alert.

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