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Host clock skew
warning

Description Clock skew detected. Clock is out of sync. Ensure NTP is configured correctly on this host.
Query for 10m 
>>>
	
				
					((
				
			
				
					
				
			
				
					 > 0.05 and 
				
			
				
					
					
						deriv
					
				
			
				
					(
				
			
				
					
				
			
				
					[5m]) >= 0) or (
				
			
				
					
				
			
				
					 < -0.05 and 
				
			
				
					
					
						deriv
					
				
			
				
					(
				
			
				
					
				
			
				
					[5m]) <= 0))
Query Explanation

The rule fires when the host’s clock offset (node_timex_offset_seconds) is more than 50 ms either ahead (> 0.05) or behind (< ‑0.05) and the offset isn’t moving back toward zero over the last 5 minutes (the derivative is ≥ 0 for a positive offset or ≤ 0 for a negative offset). In short, it alerts if the clock stays significantly out‑of‑sync in one direction, indicating a likely NTP problem.

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