ServiceMonitor template produces invalid YAML due to indent vs nindent in azure-resourcemanager-exporter

[ofirwin]

Description

The ServiceMonitor template in the azure-resourcemanager-exporter chart produces invalid YAML when prometheus.monitor.enabled is set to true.

Root Cause

In templates/prometheus/servicemonitor.yaml, line 8:

  labels: {{ include "azure-resourcemanager-exporter.labels" . | indent 4 }}

This uses indent 4 instead of nindent 4. Since indent does not prepend a newline, the labels output is placed on the same line as labels:, producing:

  labels:     helm.sh/chart: azure-resourcemanager-exporter-1.3.6

This is invalid YAML — helm.sh/chart: is interpreted as a nested mapping key within the labels scalar value, causing:

Error: YAML parse error on azure-resourcemanager-exporter/templates/prometheus/servicemonitor.yaml:
error converting YAML to JSON: yaml: line 6: mapping values are not allowed in this context

Affected Versions

All versions from 1.0.0 through 1.3.6 (latest). The bug has never been caught because prometheus.monitor.enabled defaults to false.

Fix

Change indent to nindent on line 8 of templates/prometheus/servicemonitor.yaml:

-  labels: {{ include "azure-resourcemanager-exporter.labels" . | indent 4 }}
+  labels:
+    {{- include "azure-resourcemanager-exporter.labels" . | nindent 4 }}

Steps to Reproduce

1. Set prometheus.monitor.enabled: true in values
2. Run helm template .
3. Observe YAML parse error on the ServiceMonitor