mcastelino · January 31, 2021 20:42 · Jan 31, 2021
diff --git a/jmx-exporter-kafka.md b/jmx-exporter-kafka.md
@@ -0,0 +1,50 @@
+# Exporting Memory Metrics using JMX Exporter
+
+JMX to Prometheus exporter: a collector that can configurably scrape and expose mBeans of a JMX target.
+https://github.com/prometheus/jmx_exporter
+https://github.com/prometheus/jmx_exporter/issues/111#issuecomment-748702189
+
+https://hub.docker.com/r/solsson/kafka-prometheus-jmx-exporter
+
+https://www.metricfire.com/blog/kafka-monitoring-using-prometheus/?GAID=2100776980.1612125542#Using-JMX-exporter-to-expose-JMX-metrics
+
+
+The default JMX exporter in Kafka does not export critical Java Metrics.  Kafka frequently runs into heap related failures it is critical to monitor Java Memory Metrics.
+
+This snippet shows how to export Java Memory metrics from any Kafka JXM exporter configuration.
+
+
+```
+    - pattern: 'java.lang<type=Memory><(\w+)MemoryUsage>(\w+): (\d+)'
+      name: jvm_memory_usage_$2_bytes
+      labels:
+        area: "$1"  # Heap/NonHeap
+      value: $3
+      type: GAUGE
+    - pattern: 'java.lang<name=([\s\w]+), type=GarbageCollector, key=(\w+)>(.*): (\d+)'
+      name: jvm_gc_$3
+      labels:
+        name: $1
+        key: $2
+      value: $4
+      type: GAUGE
+    - pattern: 'java.lang<name=([\s\w]+), type=MemoryPool, key=(\w+)>(.*): (\d+)'
+      name: jvm_mempool_$3
+      labels:
+        name: $1
+        key: $2
+      value: $4
+      type: GAUGE
+    - pattern: 'java.lang<name=([\s\w]+), type=GarbageCollector>(.*): (\d+)'
+      name: jvm_gc_$2
+      labels:
+        name: $1
+      value: $3
+      type: GAUGE
+    - pattern: 'java.lang<name=([\s\w]+), type=MemoryPool>(.*): (\d+)'
+      name: jvm_mempool_$2
+      labels:
+        name: $1
+      value: $3
+      type: GAUGE
+```