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Thanos Rule Is Down
critical

Description ThanosRule has disappeared. Prometheus target for the component cannot be discovered.
Query for 5m 
>>>
	
				
					
					
						absent
					
				
			
				
					(
				
			
				
					
				
			
				
					{job=~".*thanos-rule.*"} == 1)
Query Explanation

The query uses absent() to look for any up{job=~".*thanos-rule.*"} series equal to 1; if no such series exists—meaning no Thanos Rule instance is reporting as up—the function returns a result, which triggers the alert.

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