helm: Add tetragon_pod label to metrics in ServiceMonitor

Prometheus Operator by default adds "pod" label, representing the metrics exporter pod, to all scraped metrics. However, Tetragon exposes events metrics with "pod" label, which represents the process that generated events, not Tetragon pod. This label is not overridden if using the default ServiceMonitor (with "honorLabels: true") - that's good. However, it still can be useful to know which Tetragon pod exported the metric. Let's add "tetragon_pod" label to metrics scraped via default ServiceMonitor. Signed-off-by: Anna Kapuscinska <[email protected]>
cilium · Aug 23, 2024 · 340c6b0 · 340c6b0
1 parent a08b42e
commit 340c6b0
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/install/kubernetes/tetragon/templates/servicemonitor.yaml b/install/kubernetes/tetragon/templates/servicemonitor.yaml
@@ -22,6 +22,10 @@ spec:
           sourceLabels:
             - __meta_kubernetes_pod_node_name
           targetLabel: node
+        - replacement: ${1}
+          sourceLabels:
+            - __meta_kubernetes_pod_name
+          targetLabel: tetragon_pod
   namespaceSelector:
     matchNames:
       - {{ .Release.Namespace }}