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Pulsar high ledger disk usage
critical

Description Observing Ledger Disk Usage (> 75%)
Query for 1h 
>>>
	
				
					
					
						sum
					
				
			
				
					(
				
			
				
					
				
			
				
					) by (kubernetes_pod_name) > 75
Query Explanation

The rule aggregates the bookie_ledger_dir__pulsar_data_bookkeeper_ledgers_usage metric per pod (kubernetes_pod_name) and fires when the summed usage percentage exceeds 75 %. This indicates that a Pulsar bookie's ledger directory on that pod is using more than three‑quarters of its allocated disk space.

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