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OpenTelemetry Collector high memory usage
warning

Description OpenTelemetry Collector memory usage is above 90%
Query for 5m 
>>>
	
				
					(
				
			
				
					
				
			
				
					{job=~".*otel.*collector.*"} / on(instance, job) 
				
			
				
					
				
			
				
					{job=~".*otel.*collector.*"}) > 0.9
Query Explanation

The query computes the ratio of the collector's heap memory (otelcol_process_runtime_heap_alloc_bytes) to the host's total system memory (otelcol_process_runtime_total_sys_memory_bytes) for each instance (matching jobs containing "otel" and "collector"). The alert fires when this ratio exceeds 0.9, i.e., when a collector's heap usage is over 90% of the machine’s memory.

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